gold star powders

Transcription

gold star powders

GOLD STAR POWDERS
ContentsINVESTMENT
POWDERS
Contents
The Birmingham Jewellery Quarter
has been described by English Heritage
as a ‘National Treasure’... ‘A place of
unique character’... ‘A particular
combination of structures associated with
jewellery and metal working that does not
seem to exist anywhere else in the world’.
For over 200 years, the Birmingham
Jewellery Quarter has been home to
some of the most highly skilled
goldsmiths and jewellery makers.
The Chamberlain Clock Tower (Joey),
The Birmingham Jewellery Quarter.
Erected in 1903.
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58
BRASS CASTING
STAINLESS STEEL CASTING
SILVER & GOLD CASTING
HIGH-CARAT GOLD & MASTER MODEL CASTING
BURNING OUT MASTER MODELS
STONE IN PLACE CASTING
PLATINUM CASTING
ATOMIC 78 - Platinum, Palladium and Stainless Steel
AEROSPACE INDUSTRIAL INVESTMENT POWDER
BLOCK MOULDING POWDER - Turbo Wheels
GLASS CASTING
SHOE MOULDING
SHELL MOULDING MATERIALS
GOLD STAR WAXES
FREEMAN WAX
NATURAL & SILICONE RUBBERS
DE-WAX & BURNOUT FURNACES
VACUUM MIXING MACHINES
VACUUM CASTING MACHINES
CONSUMABLES
IN-HOUSE CALCINING AND MILLING FACILITY
GOLD STAR POWDERS UK
SCP THAILAND
GOLD STAR POWDERS CHINA
GOLD STAR POWDERS INDIA
GOLD STAR BRASIL
TROUBLESHOOTING
PRODUCT SELECTION AND CARE
BEST PRACTICE
WORLDWIDE DISTRIBUTOR LIST
Goodwin PLC was established in 1883.
The Goodwin Coat of Arms was awarded in 1983
by The Chester Herald of Arms for Moulding and
Casting of Metal for 100 years. In 1965, Goodwin
PLC purchased 100% of the equity in a local
refractories manufacturing firm, now merged with
Goodwin Refractory Services Ltd. Gold Star Powders
is a division of Goodwin Refractory Services Ltd.
Introduction and History
Gold Star Powders (GSP), a division of Goodwin Refractory
Services Ltd, is part of the Goodwin PLC Group, who have over
125 years of history in moulding and casting metal dating back
to 1883.
Whilst the Gold Star Brand of investment powders and all
product development originates from our ISO 9001 accredited
UK facility, it was considered that we could offer our customers
a more competitive and dynamic service by setting up the
overseas manufacturing facilities.
GSP, with its sister companies, is now the largest manufacturer
of Investment Casting Powder in the world, producing over
30,000 tonnes worldwide per year; this equates to 1.5 million
sacks (22.7 kg) of Gold Star Powder. Our ability to compete is
aided by our economies of scale and the fact that, within our
group of companies, we have our own silica deposits, and
state-of-the-art calcining facility, to manufacture our own
Cristobalite. This vertical integration ensures a secure and
competitive supply of the most important and expensive
component of investment powder.
INVESTMENT
POWDERS
GSP laboratories are continually investing the latest technology
available. GSP utilise particle size, thermal & setting expansion,
X-Ray Fluorescence, X-Ray Diffraction, Permeability and Surface
Finish Analysis to optimise products available to the industry.
GSP supplies consumable products to the jewellery and
industrial casting industry. Additionally, we now offer a full
range of machinery used in the casting process, which is
manufactured competitively in India, to state-of-the-art
European designs, and performance to ISO 9001 Standards.
Gold Star Powders UK
Gold Star Powders India
Siam Casting Powders Thailand
Gold Star Powders China
Gold Star Brasil
For your local distributor details, see pages 58-60
or visit www.goldstarpowders.com
1
INVESTMENT
POWDERS
Brass Casting
Gold Star LC Brass
Gold Star LC Brass (LC stands for ‘low cost’) is an exceptionally competitive, plaster-bonded
investment powder, specifically formulated by optimising the particle-size distribution and
thermal expansion to help casters compete in the most demanding of casting environments.
The casting of Brass for the costume jewellery market accounts for a large percentage of
worldwide jewellery production, and is an area where costs must be minimised. Gold Star
LC Brass helps achieve this but at the same time produces castings with excellent surfaces,
therefore reducing metal loss and keeping finishing work, prior to plating, to an absolute
minimum.
Gold Star Low Cost Brass can also, under strictly adhered to conditions, successfully cast
silver, producing good quality castings with smooth surface finish.
The cost of Low Cost Brass is at least 25% lower than a competitive, conventional
investment powder, although it is less abuse-resistant than other Gold Star products.
MACHINE VACUUM MIXING
Weigh out water & powder
Add powder to water
Min.
0
• Leave for 90 min to stand before burnout
HAND MIX THEN VACUUM
Add powder to water
Min.
0
1830
900
1650
800
1470
700
1290
600
Mix by hand
1
500
Stop mixer and scrape blades
0.5
Mix with machine
3
400
Mix under vacuum
3.5
Vacuum mixer bowl
1
Mix under vacuum
1
Pour flasks
2
Pour flasks
1
Vacuum flasks
1
Vacuum flasks
2
Total time taken
8
Total time taken
8
1110
Minimum Flask Temp.
930
0/H
R
34:100
Lower to Casting Temp.
Vacuum & Centrifugal Flasks
Vacuum Flasks Only
1000
750
25
• Slurry Temperature 21°C
R
34:100
0/H
• Do not cast with a flask temperature
lower than 650°C
25
WATER TO POWDER RATIO
300
570
200
390
100
210
0
0
2
Do not remove flasks from furnace to cast until they have been held at casting
temperature for a minimum of 1 hour. If held for less than 1 hour, the core of the flasks
will be at a much higher temperature than the digital temperature display states, and
may result in metal mould reaction.
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
3
Stainless Steel Casting
INVESTMENT
POWDERS
HT
kept as low as possible and must be below 21°C / 70°F; this
may be done by using refrigerated water. In-line water
refrigeration systems are readily available and relatively
inexpensive. Water temperatures as low as 3°C / 37°F can be
used; at this temperature extended work times and a thinner
slurry will be experienced.
Stainless Steel has become an increasingly popular alloy within
the jewellery industry. It allows for large, intricately designed
jewellery to be cast at a reasonable price.
HT has been specifically formulated with a fine particle size
distribution and a high fired strength. HT is a phosphate-bonded
investment powder that is used with the conventional rubber
base and flask system. The flask base can be stripped 90 minutes
after investing when the mould has set and achieved full green
strength.
Recommended Grade of Stainless Steel
GSP has developed and produced at the Goodwin Steel
Castings foundry, a specially formulated 316 stainless steel alloy
especially for the jewellery casting market. The alloy JC-316 S/S
has excellent flow properties providing complete fill of fine
detail and oxide-free castings.
Phosphate bonded investment powders are less permeable
than gypsum bonded investment powders, therefore in order
to achieve a clean and complete burnout it is necessary that the
top burnout temperature of 900°C / 1650°F is reached to
remove the entire carbon residue from the mould.
Phosphate-bonded investment powders set in an exothermic
reaction. This means that heat is generated during the chemical
reaction taking place when the material sets. Heat acts as a
catalyst to the reaction, therefore speeding up the setting time
and thus making the investment thicker. In order to achieve
optimum results it is very important that slurry temperature is
HT must not be steam de-waxed as it will break down the mould.
After casting, the flask can be quenched in a water bath where
where the vast majority of the investment will be removed by
the thermal shock, minimising the remainder of the cleaning.
Gold Star Powders JC-316 S/S Alloy
WATER : POWDER
32:100
Min.
• DO NOT STEAM DE-WAX
Min.
0
Add powder to water
Add powder to water
1830
900
1650
0
800
1470
0.5
700
1290
3
Mix with machine
1.5
600
1110
Pour flasks
1
Vacuum mixer bowl
1
1
500
1.5
5.5
400
750
300
570
200
390
Total time taken
0/
20
HR
5.5
100
210
5/
Total time taken
Vacuum flasks
930
17
1.5
Pour flasks
HR
Mix by hand
Mix under vacuum
Vacuum flasks
4
1000
0
0
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
Right: Award rings courtesy of Commentative Brands Inc.
5
INVESTMENT
POWDERS
Silver and Gold Casting
Gold Star Powders has travelled the world to source the highest
quality, pure raw materials and additions, to ensure premier
performing consistent products are produced. Both Gold Star XL
and XXX benefit from the high quality cristobalite that is tailored
to our exact specification and manufactured at our sister
company’s calcining and grading division in Derbyshire, England.
Gold Star Powders recommends two investments for the casting
of all Silver and Gold alloys both yellow and white up to 18ct,
with the exception of Palladium White Gold (see Omega+ for
Palladium White Gold Casting - page 8).
Each of these competitively priced products produces excellent
surface finish, a strong mould, and “cleans off” the casting easily.
They are both suited to centrifugal and vacuum assisted casting
methods, and, where vacuum flasks are used, a fast burnout cycle
can be used.
3.5
Pour flasks
2
Vacuum flasks
1
8
500
3
400
Vacuum mixer bowl
1
1
300
Pour flasks
Vacuum flasks
Total time taken
Remove tape from flasks after
6
200
2
8
100
90
0
1290
500/HR
1110
930
HR
1
Mix with machine
500/HR
ly
Mix by hand
500/HR
750
250
/
Mix under vacuum
600
/HR
0.5
1470
250
1
Extra Fast
700
0
Add powder to water
Rapid
On
Min.
Standard
800
tV
ac
0
Total time taken
• Slurry temperature 21°C
Fas
Min.
Above: Maria de Toni ’Gold Expressions 2008’
courtesy of the World Gold Council.
www.gold.org
• Weigh water and powder
570
390
HR
40:100
Mix under vacuum
We are always seeking to improve upon our products; we were
continually being asked for a cost effective quality investment
powder which will cast both Yellow and White Gold alloys up to
18ct. Our Research and Development Team, supported by our own
Calcining and Milling Facility, introduced Gold Star XXX which filled
the prescription perfectly.
0/
38:100
Add powder to water
Gold Star XXX
25
Gold Star XL has been our greatest volume investment powder over
the last decade, with a proven track record of success. XL will meet the
demands of casting Silver and Yellow Gold up to 18ct.
• Use de-ionised water
Gold Star XL
210
0
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
Opposite: A Solid Silver crocodile made in Zimbabwe by Patrick Mavros. It has been
hand carved, vulcanised in natural rubber, wax injected and cast in solid silver.
7
INVESTMENT
POWDERS
High-Carat Gold & Master Models
Omega+
Omega+ has been designed for the application of Master
Model casting and has been tested with a cross-section of SLA
Resins, Carving Waxes and Machined Waxes. Omega+
produces excellent results with smooth surfaces when used to
cast with models from companies such as Envisiontec, 3D
Systems, Invision and Solid Scape.
+
Omega has been
formulated to deal with the most
demanding situations, producing excellent results even at the
most extreme temperatures. Omega+ has optimised thermal
expansions, permeability and particle size distribution to enable
it to produce the highest quality castings and reproduction of
Master Models. Omega+ has the highest content of unmineralised Cristobalite in the GSP range. A grade of
Cristobalite is specifically manufactured for Omega+ at our
sister company’s calcining and grinding facility, which ensures
that the exact particle size grading required is achieved.
The application of Omega+ determines which burnout cycle
should be used. If standard Jewellery injection wax is being
cast then the burnout cycle below for Injection Wax is to be
utilised. If SLA Resins, Machined Waxes or Carving waxes are
being cast the burnout cycle for Master Models on page 10 is
to be utilised in order to achieve optimum results.
Omega+ is suitable for all Yellow and White Golds including
High Percentage Palladium White Gold.
• Use de-ionised water
0.5
Mix under vacuum
3.5
Pour flasks
2
Vacuum flasks
1
Total time taken
8
600
Mix by hand
1
500
Mix with machine
3
400
Vacuum mixer bowl
1
1
300
2
8
100
90
0
Pour flasks
Vacuum flasks
Total time taken
200
500/HR
Opposite: ‘Only Gold is Radiant’, courtesy of the World Gold Council. – www.gold.org
8
1290
500/HR
1110
930
750
570
390
210
0
0
Top Right: 18ct White Gold Ring with Tanzanite, cast by Hean Studio Ltd. Designed by and courtesy of Shaun Leane.
500/HR
/HR
1
1470
700
0
Add powder to water
Extra Fast
250
Mix under vacuum
0
Min.
Rapid
HR
Add powder to water
Standard
800
250
/
Min.
On
ly
See page 10 for burnout cycle for SLA Resins, Machined Waxes or Carving waxes
• Slurry temperature 21°C
Va
c
38:100
Fas
t
• Weigh water and powder
HR
38:100
0/
25
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
Do not remove flasks from furnace to cast until they have been held at casting temperature for a
minimum of 1 hour. If held for less than 1 hour, the core of the flasks will be at a much higher
temperature than the digital temperature display states, and may result in metal mould reaction.
9
Master Model Manufacture
INVESTMENT
POWDERS
Omega+ for Resin Wax Casting
Master Models
To achieve the optimum casting results, having taken care of
your Master Models, it is also important to follow the
suggested burnout cycle detailed below. This cycle has been
tested in the Gold Star laboratories and will help produce
optimum results. It is suggested that furnaces are calibrated for
temperature control regularly.
Do not remove flasks from furnace to cast until they have been
held at the correct casting temperature for a minimum of 1 hour.
If held for less than 1 hour, the core of the flasks will be at a much
higher temperature than the digital temperature display states.
•
Waxes and Resins should be stored at the correct
temperature as suggested by the supplier.
•
After production, resin patterns should be cleaned and
allowed to dry before being stored in an airtight container
with a silicon absorbtion pad.
•
The patterns should then be placed into a sealed container
with a silicon gel bag.
•
Patterns must not be taken out of the sealed container or
excessively handled until ready for spruing.
1000
1830
900
1650
800
1470
700
1290
600
1110
500
930
750
R
400
20
390
HR
200
210
15
0/
100
0
0
10
570
0/H
300
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
F
The Burnout Process
There are some important rules to follow when producing
Master Models for casting and these should be followed so that
the best quality casting is achieved.
/HR
Tests using patterns produced by a number of different
companies including Evisiontec, 3D Systems, Solid Scape and
Invision, cast using Omega+ have seen exceptional quality
castings in terms of surface finish and faithful reproduction of
the finest detail.
Taking Care of Master Models
200
The number of S.L.A. (Stereolithography), Machined and
Carved Master Models being produced continues to increase.
Gold Star Omega+ is a new investment powder able to
withstand the challenges of pattern expansion, and higher than
usual burnout temperatures, to remove all of the carbon
residues.
11
INVESTMENT
POWDERS
Stone in Place Casting
Gem Set
Gem Set has been specially formulated to protect
precious stones such as diamonds, when they are set
into the wax patterns, burned out and cast , to ensure
no damage to the stones during the burn out cycle.
The maximum temperature achieved during the
burnout cycle MUST not exceed 630°C.
Extensive permeability testing and development
has taken place to ensure maximum carbon is
released from the mould during burnout. It is
formulated with the special additives to enhance
stone-in-place casting results and improve cleanoff. Gem Set will cast all alloys melting below
1250°C.
Gem Set holds the stones in place during the dewax period, and protects them from the heat
during the remainder of the burnout process, and
the molten metal when cast. Gem Set will produce
high definition, clean surface castings, with stones
that remain as clear as they were before burnout.
Items supplied courtesy of L. Wooley, Hockley, Birmingham.
38:100
• Do not burnout above 630°C
38:100
• Do not quench, only knock out when cold
1470
800
Add powder to water
Mix under vacuum
0
1
0.5
Mix under vacuum
3.5
Pour flasks
2
Vacuum flasks
1
Total time taken
12
8
Add powder to water
Mix by hand
Min.
0
1
700
1290
Maximum burnout temp.
600
1110
500
930
25
0/
HR
Min.
400
750
Mix with machine
3
Vacuum mixer bowl
1
1
300
570
200
390
2
8
100
Pour flasks
Vacuum flasks
Total time taken
90
Do not remove flasks from furnace to cast until they have been held at casting temperature for a
minimum of 1 hour. If held for less than 1 hour, the core of the flasks will be at a much higher
25
0/
HR
210
0
0
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
Opposite: Photograph supplied courtesy of Indutherm;
casting by Pusch Co., Pforzheim.
13
Platinum Casting
INVESTMENT
POWDERS
Phosphate-Bonded Investment Powder
Platin Cast
The extreme melting point of Platinum of up to 2000°C requires a specially
formulated Investment Powder to cope with the intense casting conditions.
Platin Cast is a water-based Phosphate-bonded Investment Powder, which
has been successfully used for the casting of Platinum alloy for many years.
Traditional Platinum casting investments use a 2-part acid-bonded chemical
reaction to attain mould strength at an elevated temperature, whereas Platin
Cast utilises a water-based, phosphate-bonded chemical system and sets in
an exothermic reaction at room temperature.
The mixing process is similar to a plaster-bonded investment such as Omega,
where the powder is added to the water in a mixing bowl, mixed for the
correct length of time, vacuumed in the bowl and then poured into the flask,
vacuuming once again.
Platinum pendant and chain inset with diamonds.
After investing, the mould is allowed to bench-set for two hours, by which
time it has set and the rubber base can be removed and the mould placed
into the furnace.
Platinum tree supplied courtesy of Hean Studio Ltd, England.
Add powder to water
1110
500
750
1
1
300
570
200
390
1
Vacuum mixer bowl
Pour flasks
Vacuum flasks
Total time taken
1.5
5.5
100
0
14
930
400
Pour flasks
5.5
600
1.5
Mix with machine
Total time taken
1290
0.5
3
1.5
700
Mix by hand
Mix under vacuum
Vacuum flasks
0
1470
HR
0
Add powder to water
800
0/
Min.
20
1650
HR
Min.
Do not remove flasks from furnace to cast until they have been held at casting temperature for
a minimum of 1 hour. If held for less than 1 hour, the core of the flasks will be at a much higher
210
5/
32:100
1830
900
17
WATER : POWDER
1000
0
0
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
Opposite: White Gold wedding bands inset with diamonds.
15
Atomic 78 - Platinum
INVESTMENT
POWDERS
Acid Bonded Investment Powder
Atomic 78 uses advanced Acid Bonded chemistry to produce
revolutionary results for the Platinum and Palladium casting
industry. This powder is not mixed with diluted acid, because
the acid binder has been included into the powder formulation,
therefore making it an ‘Add water only’ investment. This
ensures that the acid concentration in the investment is
consistently at the correct level, and removes the necessity of
having liquid acids in the workplace.
GSP have developed a mould drying system as illustrated
(patent pending), whereby a rubber base with a disposable
drying cartridge is used to extract the water from the flask, and
no longer requires a bed of drying media. Therefore there is no
need for the wax tree to be fixed to a card base, or for a paper
liner inside the flask. However, if the caster prefers to use the
traditional method of waxing, Atomic 78 is very versatile and
can be used for this method too.
After investing, the flask should be bench set for three hours.
In that time the mould will set hard and will be ready to be
placed into the furnace; this is not the case with most
conventional 2-part investments.
Atomic 78’s clean-off after casting is equally groundbreaking, and can be seen by visiting the web site
www.atomicpowder.com. The mould can be quenched in a
bath of water, 10 minutes after casting; the quench is quite
violent and noisy. The casting is ejected from the mould,
leaving very little additional cleaning necessary: another timesaving advantage to using this product when compared to
traditional 2-part investments.
Atomic 78 can also be used to cast other high meltingtemperature alloys such as Chrome Cobalt and Stainless Steel.
Note: The maximum flask size that can be used is 4” x 4”.
2 - Atomic Rubber Base
800
3
1
1470
Casting Temp.
700
1290
600
1110
500
930
400
750
300
570
200
390
100
210
0
0
0
The maximum flask size that can be used is 4” x 4”.
For mixing instructions, video user guide and more information see website.
16
1830
1650
900
3 - Atomic Flask
2
1000
1 - Disposable Drying Carton
1
Atomic 78 blowing off investment from casting.
1
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
www.atomicpowder.com
17
Aerospace Industrial Investment Powder
INVESTMENT
POWDERS
Goodwin Refractory Services is one of the world’s largest
manufacturers of Industrial Investment Powder for the
Aerospace, Automotive, Rapid Prototyping and other Industrial
applications.
In conjunction with our customers, over many years, we have
developed a versatile range of investments to suit all
applications. These can be tailored to an individual foundry’s
specification, producing an investment powder which will cope
with the most demanding of tolerances.
GRS has the ability to carry out manufacturing trials at our UK
facility, to offer our technical consultancy service and help
improve the quality of the castings and manufacturing
efficiency.
GRS Industrial Investment Powders are used to manufacture
parts for use by such world-renowned names as Boeing and
Airbus from the Aerospace Industry; and Ferrari Formula 1,
B.M.W. Mercedes and Volkswagen Audi from the Automotive
Industry.
M028
This is our most popular Industrial Investment and was
formulated in our laboratory for the production of high
accuracy, thin-walled Aluminium castings and other low
temperature, non-ferrous alloys for the aerospace industry.
M356
This has been developed for thin-walled castings, in particular
those containing vented channels where the inner wall integrity
is vital, and the ease of removal of the investment after casting
is essential; this may often be required when casting military
parts, for example in the new Eurofighter aircraft.
18
Opposite: Eurofighter Typhoon – The Eurofighter is a twin-engine, multi-role strike fighter aircraft that is unique in modern combat aircrafts in that there are four separate assembly lines. BAE Systems are one
of the four partners that design and manufacture the Eurofighter Typhoon and, as such, British Aereospace Systems stand out as one of the largest and most highly innovative UK industrial manufacturers.
19
Block Moulding Investment Powder
INVESTMENT
POWDERS
Turbo Wheels
Goodwin Refractory Services is one of the world’s largest
manufacturers of Block Moulding Industrial Investment Powder
designed specifically for vacuum casting aluminium and other
low temperature, non-ferrous metals.
In recent years, the automotive industry sector has grown
significantly and the manufacture of turbo charger wheels has
become an industry in its own right as all engine manufacturers
look for increases in power and efficiency of their latest designs.
Modern turbo chargers help improve fuel efficiency, economy
and power, and reduce emissions throughout the operating
range.
Bugatti Veyron 16.4
The Bugatti Veyron 16.4 is a mid-engine
sports car produced by Volkswagen AG. It is
the quickest accelerating and decelerating
street-legal production car in the world.
Powered by a 1,001PS (987hp/736kW)
W16 engine, it is able to achieve an average
top speed of 253.81mph and
0-60mph in 2.9 seconds. It is named after
French racing driver Pierre Veyron, who won
the 24 hours of Le Mans in 1939 while racing
for the original Bugatti team.
As this exciting technology has spread to more and more
applications, the technology for manufacture has become more
sophisticated.
Goodwin Refractory Services is a leading supplier of Block
Moulding Investment Powders, and we have worked to
provide the industry with the highest level of dimensional
accuracy and to produce faultless castings that require
minimum finishing.
Turbo Charger Wheels.
M391 is specifically designed for use with silicone rubber
moulds, and contains special additives which facilitate the
removal of the master without detrimental effect on the surface
of the plaster mould. These systems are typically used without
flasks and it is not advisable to use them with metals which
melt above 1100°C.
The product can be tailor-made to suit your own processing
system and manufacturing requirements.
Goodwin Refractory Services offers a worldwide Technical
Consultancy service to help you maximise throughput and
efficiency in investing and casting. Please contact Gold Star
Powders UK.
20
Bugatti Veyron W16 engine.
21
INVESTMENT
POWDERS
Glass Casting
Gold Star Crystalcast
Gold Star Crystalcast is a plaster-bonded investment powder specifically
designed for casting glass. The refractory content and permeability of
Crystalcast enables firing cycles to temperatures as high as 900°C for as long
as 10 days depending on the mould size.
To enable the removal of filigree work from the mould without breakage and
for ease of use, Crystalcast has been designed to have high strength during
firing, yet removal from the cast item when cool is very easily achieved,
limiting any chance of damage.
Crystalcast has been formulated with a high-technology particle size
distribution ensuring that every detail of the mould is reproduced with an
exceptional surface finish. Gold Star has optimised the strength of this
investment powder so that it permits the casting of small or large sculptures.
Crystalcast is mixed using the same method as a standard plaster-bonded
investment, with a water to powder ratio of 32:100. After the mould has cured
for a minimum of three hours, the pattern is then removed by the steam
de-wax process. This process can take up to 4 hours but is dependent on
mould size. Care must be taken not to steam de-wax the mould for too long
as it can cause damage to the mould surface.
Glass “Free Set” on Mould.
1830
1000
Time Dependant on Mould Size
900
22
1290
600
1110
500
930
50
/H
R
700
400
HR
Opposite: Après l' Amour
amber and sea green crystal,
oeuvre d'Art signed by Daum and Sylvie Mangaud Lasseigne,
limited edition to 375 pieces.
1470
/
10
The mould must be cooled in the furnace at a rate of no greater than 10°C per
hour to ambient temperature. At this point the casting can be gently removed;
never quench glass or crystal castings.
1650
SS
800
The de-waxed mould filled with glass crystals is placed in a cold oven and fired
as per graph. The furnace should be ramped up at no greater than 50°C per
hour until a temperature of 850°C is achieved, this temperature is to be held
for around 30 hours; the length of time is dependant on its size. When the
glass becomes molten it flows under gravity into the voids of the mould
completing the casting process.
Glass in ceramic feeder on Mould.
750
300
570
200
390
100
210
0
0
0
5
10
15
20
25
30 35 40 45 50
Time in Hours
55
60
65
70
75
80
23
INVESTMENT
POWDERS
Shoe Moulding
Gold Star Shoe Cast
Gold Star Shoe Cast is specifically designed for the manufacture
of aluminium shoe mould plates for the production of shoe
soles. This method of manufacture is used to produce soles for
many of the leading names in the training shoe industry.
A typical master shoe model is constructed from wood, metal,
or plastic. Silicone is then poured over the master model and
left to cure. Once set, the Silicone mould is stripped from the
master, Gold Star Shoe Cast slurry is poured into it and allowed
to set.
The Gold Star Shoe Cast plaster model is removed from the
silicone mould and dried out in the furnace. The plaster model
is then set into a frame and molten aluminium is poured over
it, the metal is left to cool and the plaster is removed from the
aluminium casting.
Mixing Instructions
Lower to Ambient Temperature for Casting
1000
1830
Add the powder to the water at a ratio of 40:100 and mix for
4 minutes, vacuum the mixing bowl for 1 minute and pour
around the pattern. Vacuum for a further 1 minute and then
top off the pattern frame. To aid the removal of air
bubbles gently vibrate during vacuuming. Total work time is
10 minutes.
900
1650
800
1470
700
1290
600
1110
The mould must be allowed to set for a minimum of 2 hours
before being loaded into a drying oven at ambient
temperature. The drying oven is to be ramped up to a
temperature of 280°C at a rate of no greater than 100°C per
hour. The mould must be held at 280°C for between 5 and
12 hours depending upon its size.
500
930
400
750
300
570
200
390
Once the cycle is complete, the drying oven may be switched
off and allowed to cool to ambient temperature. The moulten
metal may then be cast into the mould and allowed to cool, at
which point the plaster is removed.
100
24
HR
210
0/
10
0
0
1
0
2
3
4
5
6
7
8
9
Time in Hours
10
11
12
13
14
15
16
F
Shoe cast is to be mixed at a recommended slurry temperature
of 21°C, adjust the water temperature to achieve this.
25
Shell Moulding Materials
Goodwin Refractory Services aims to establish and maintain long-term relationships with our Precision Casting customers, helping them
meet the demands and challenges in a growing industry.
We process and quality check, at our fully automated facilities in the United Kingdom, the highest quality materials in order to meet
the most exacting and demanding challenges of the industry.
Key products of the GRS include refractories for addition to the binder, refractory stuccos for the building process of the shell, and hightechnology shell repair materials.
Refractory Products
Repair Products
Mullite 55 is a high Alumina content refractory material for the
back-up Slurry and Stucco.
Rhoseal is designed for shell repair in Aerospace applications
where high purity is a prerequisite.
Zirconium Silicate High purity sands are used for the specialist
manufacture of Precision Casting grade materials for primary
Slurries and Stuccos.
Silroc is for all commercial shell repair applications.
Fused Silica High purity Amorphous Silica is used to
manufacture all grades suitable for both Slurry and Stucco
applications.
Primary Slurry
REFRACTORY PRODUCTS
Typical Grades
Mean Size
Uses
Zirconium
Silicate Flours
200’s
90% < 50
Microns
Primary Slurry addition
for Aerospace
and commercial
applications
Zirconium
Silicate Sand
M170
90% <180
Microns
Primary Stucco for
Aerospace
and commercial
applications
Mullite 55
Flour
200’s
80% < 45
Micron
Back-up Slurry
addition for
Aerospace and
commercial applications
Mullite 55
Stuccos
16-30’s
30-80’s
50-80’s
1.0 to 0.5mm
0.5 to 0.18mm
0.3 to 0.18mm
Back-up Stucco addition
for Aerospace and
Fused Silica
Flour
200’S
90% < 75
Microns
Primary Slurry addition
for Aerospace and
Fused Silica
Stuccos
50/100
10/20
0.3 to 0.15mm
1.7 to 0.85mm
Back up Stucco addition
for Aerospace and
Repair
Product
SHELL REPAIR PRODUCTS
Iron
Lead
Bismuth
Content
Content
Content
RHOSEAL
< 1500ppm
< 50ppm
< 1ppm
High purity
Aerospace
SILROC
0 – 1.5%
0.009%
N.A.
All forms of
commercial
casting
Draining of primary slurry prior to stucco coating.
Slurry coating shell mould.
26
Uses
(Photos supplied courtesy of MK Technology).
Stucco coating shell mould in rain chamber.
Opposite: Molten metal being poured in to shell
moulds for the aerospace industry.
27
Gold Star Waxes
Gold Star’s development programme is specifically targeted at
producing the best and most economic range of injection waxes.
Formulated by its own research and development team, these high
quality waxes offer world-beating value for performance. The
waxes have been developed primarily for jewellery applications,
providing excellent reproduction of detail.
These waxes are manufactured under strict quality control
conditions, and are marketed exclusively through Gold Star’s
network of distributors.
GS Wax 110
A quality wax, particularly suitable for injection forming of detailed
and filigree wax patterns. Produced in conventional bead form.
GS Wax 120
A premium grade injection wax, which is designed to be used at a
temperature of 70°C with excellent flow characteristics – allowing
a wide range of components to be made, including stone in place
and the finest filigree patterns.
GS Wax 125
Developed primarily for filigree type application, but is equally
suitable for other demanding work. It has excellent flow
characteristics and is designed to be used at temperatures of
67º-70ºC.
GS Wax 130
Designed for all jewellery applications, and is particularly suitable
where thick and thin sections can occur, such as signet rings and
coin mounts. It gives an opaque, chalky appearance when set, to
enable the inspection of fine detail prior to investment. This wax is
quick setting and will give to minimal pattern shrinkage; an
excellent, all-purpose choice.
28
Specifications
GS
GS
GS
GS
GS
GS
GS
GS
Wax
Wax
Wax
Wax
Wax
Wax
Wax
Wax
110
120
125
130
140
210
310
320
Congealing
Point °C
Injection
Temp °C
Penetration
IP49
dmm@25
Flexibility
1-10
Typical
Viscosity
cPs@70°C
Colour
62
65
60
64
64
65
65
65
70
70
67-70
68-70
70
70
71
71
7
8
8
6-7
6
7
6
6
4
5
5
3
3
4
4
5
265
275
263
220
430
345
345
263
Aqua
Blue
Pink
Green
Aqua
Blue
Red
Aqua
GS Wax 140
Particularly suitable for patterns with larger flat surfaces. Its quick
setting properties and hardness reduce shrinkage to a minimum.
An injection temperature of at least 70ºC is suggested.
GS Wax 210
Specifically developed for both injection and also the pouring
technique; used for small and large statues. Available in
conventional bead form.
GS Wax 310
Is very suitable for the production of large patterns including belt
buckles. It has excellent flow properties, extremely low shrinkage.
GS Wax 320
This product is supplied in Aqua colour to allow for better detail
recognition on the patterns. The wax is designed to produce a
wide range of components including fine filigree, and has speedy
solidification characteristics, giving minimum shrinkage.
Opposite: African Silver bangles courtesy of Patrick Mavros.
29
Freeman Wax
®
Gold Star can offer a comprehensive range of Freeman products including Flakes Premium
Injection Waxes, Ring Tubes and Carving Blocks.
For over 30 years, Freeman Injection Wax has been the industry standard for quality and
consistency. Its formulations are renowned for their high pattern detail, rapid wax
solidification, minimal shrinkage, excellent flow and low ash content (.003%), enabling the
cleanest burnouts and most accurate reproductions possible. All are designed for Platinum,
Gold, and Silver, as well as industrial and dental alloys.
Freeman Ring Tubes
Available in Green & Blue.
Freeman Flakes Comparision Chart
Flow
Flexibility
Carvability
Shrinkage
Memory
Pattern Shelf Life
Readability
Solidification
Aqua
High
Medium
Low
Low
Medium
High
High
Medium
Turquoise
High
Medium
Low
Low
Medium
High
High
Medium
Ruby Red
High
Medium
Low
Low
Medium
High
High
Medium
Tuf Guy Green
Medium
High
Medium
Low
Medium
High
High
Medium
Filigree Pink
Medium
Medium
Low
Low
Medium
High
Medium
Medium
Super Pink
High
Low
Medium
Low
Low
Medium
High
Fast
Medium
Highest
Medium
Medium
High
Highest
Medium
Medium
High
High
High
Low
Medium
High
High
Fast
Flexible Blue
Carvable Purple
30
Freeman Blocks & Slices
Available in Green, Blue and Dark Green.
Freeman Wax
Aqua Flakes
Injection Temp: 65ºC / 150ºF
Filigree Pink Flakes
This all-purpose injection wax is Freeman’s most popular formulation,
as it provides the ideal balance of characteristics demanded by most
designers and casters. Also recommended for stone in place casting.
This wax combines the flexibility of Tuf Guy Green with the excellent
flow characteristics of Aqua flakes, producing very high detail while
enabling easy pattern removal without breakage. Recommended for
stone in place casting.
Turquoise Flakes
Super Pink Flakes
Similar to Freeman’s Aqua Flakes, except for the turquoise colour.
Many designers and casters prefer the darker colour for easier visual
verification of fine detail.
Ruby Red Flakes
Featuring the quickest solidification, this wax will not give, making it
ideal for clasps, claws, and bezel settings. Also, the opacity makes this
wax superior in readability.
Flexible Blue Flakes
Similar to Freeman’s Aqua Flakes, except for the deep-red colour.
Many designers and casters prefer the darker colour for easier visual
verification of fine detail.
Featuring the longest shelf-life and highest flexibility of the Freeman
Flakes line, this unique mixture of wax and plastic is especially wellsuited for metal moulds and stone in place casting.
Carvable Purple
Tuf Guy Green Flakes
This is the toughest wax of the Freeman Flakes line. Its accuracy and
durable, yet flexible, characteristics make it ideal for large pieces.
Developed for designers and casters who often rework wax patterns,
this wax offers superior carvability with minimal filling or clogging of
tools. Also, with the highest injection temperatures of the Freeman
Flakes line, it will not break under stress and enables easier handling.
31
Gold Star
Natural & Silicone Rubbers
As part of the range of accessories required by the jewellery
casting industry, Gold Star offers a range of high-quality mould
rubbers. Due to precise requirements, continuous product
research is being carried out to ensure Gold Star offer the very
best mould rubbers to its customers.
A key component in the manufacture of cast jewellery is
injection mould rubber; typically, the rubber will either be a
Natural Gum or Silicone.
Gold Star offers an excellent Natural mould rubber called
Formula 8. This product is formulated in the United States of
America and has all of the attributes required in today’s wax
room, including excellent memory, super high-tensile strength,
and the ability to produce exact fineness of detail. Formula 8 is
produced in both 22.7 kilo rolls and 10 kilo boxes of strips.
We also have Silicone rubber in both a liquid two-part and
putty form, these are both easy to work and cut, require no
release spray and provide high shine finish to the patterns.
Silicone Moulding rubbers are synthetic rubber compounds
especially designed for use in the lost wax casting method of
making precious metal jewellery. Gold Star produces 3 types of
silicone putty for wax injection of jewellery.
PUTTY
HARDNESS
ADVANCE
35+ -5
Shore A hardness, Yellow
AQUA
40+ -5
Shore A hardness,
Light Green
MASTER
45+ -5
Shore A hardness, Blue
32
Opposite: Natural rubber mould with wax models.
33
De-wax and Burnout Furnaces
Today’s casting industry, whether it be jewellery or industrial, is constantly developing and
demanding more from its equipment suppliers. GSP has, for many years, recognised this fact and
has developed not only a range of modern, electric, energy-efficient furnaces for the jewellery
industry, but has also worked with customers in both sectors to create bespoke furnaces for their
specific applications. We are proud to advise that whether you require a static, rotary or bespoke
sized furnace, we at GSP provide the expertise and after-sales service you require in this field.
The burnout process is one of the key elements in achieving good-quality castings. GSP has
manufactured in the UK our own high quality multi-step Digital Temperature Controller (GSPDTC6) to ISO9001 standards. All Gold Star furnaces are supplied fitted with a GSP-DTC6
controller as standard; the GSP-DTC6 can be also purchased separately. For GSP-DTC6 user guide
see page 57.
Gold Star furnaces ensure complete burnout occurs, preventing cool areas which will give
incomplete burnout with carbon residues, and will adversely affect the quality of the final casting.
Gold Star furnaces are all delivered complete with a digital controller that has 9 individual
programs. These digital controllers are available to purchase as a stand-alone unit, to retrofit to
your existing furnace – see page 57.
Our most recent addition is a rotary burnout furnace which has an odour diffuser attached, which
neutralises the gases emitted during the process. All Gold Star furnaces are manufactured from
stainless steel, and are specifically designed to perform excellently for the jewellery casting process.
SPECIFICATIONS
Flask Capacity
(6” x 4” Flange Type)
GS12
GS40T
ROTARY 35J
8
27
20
Width:
Internal:
External:
340mm
550mm
410mm
730mm
490mm
868mm
Depth:
Internal:
External:
340mm
700mm
640mm
1030mm
520mm
720mm
Height: Internal:
External:
340mm
700mm
440mm
1620mm
860mm
2010mm
98kg
276kg
295kg
Weight:
34
SPECIALS
Specifically
designed
to customers’
requirements.
GS40T
Opposite: Special commission photo taken with kind permission of Sellex S&AS.
GS40T
ROTARY 35J
SPECIAL COMMISSION
SELEX S&AS
(Formerly British Aerospace Systems)
35
Vacuum Mixing Machines
The mixing of the Investment Powder is vitally important to
producing a quality casting, free of bubbles and blemishes,
both of which are difficult to remove.
Gold Star Maxivac Vacuum Mixing Machines provide
consistent mixing, leading to a superior surface finish, total
elimination of air bubbles and highly accurate pouring,
ensuring no wax breakage.
Gold Star’s Maxivac 17 and 35 vacuum mixing machines are
specified to the exacting conditions required for optimum
results of the Investment Powder. The vacuum mixers do this
by improving the consistency and quality of the mixed slurry
through the reduction of air entrapment, and wetting of the
powder during the mixing and pouring process.
Gold Star is a fundamental supplier/partner within many
industries, from jewellery and aerospace, through to
automotive prototype production (for Ford, Mercedes, Ferrari).
It plays a vital role in the production of quality industrial
castings. Production of these intrinsically complex pieces of
machinery means that having superlative industrial castings is
essential, and Gold Star provides this.
Illustrated in the far-right picture is the large mixing machine
used by Selex S&AS (formerly BAE Systems Portsmouth).
The large vacuum mixer was designed by GSP specifically for
Selex S&AS.
Selex S&AS is a global company engaged in the development,
delivery and support of advanced defence and aerospace
systems in the air, on land and at sea.
SPECIFICATIONS
Width
(*With control box at maximum outward reach)
36
620 (*900)mm
MAXIVAC 35
680mm
730mm
Height
1410mm
1660mm
VACUUM FLASK CHAMBER
Diameter
355mm
550mm
Depth
240mm
530mm
Maximum height of flask which can be invested
9”/ 230mm
12”/ 305mm
12kg
25kg
CAPACITY
Number of 6” x 4” flasks (Flange type)
6
Special Commissions
1100 (*1430)mm
Depth
Maximum weight of powder
Top Right: Mixing action of Maxivac 17 mixer.
MAXIVAC 17
Specifically
designed to
customers’
requirements.
Max. weight:
500kgs of Powder.
12
Opposite: Special commission photo taken with kind permission of Selex S&AS.
MAXIVAC 17
MAXIVAC 35
SPECIAL COMMISSION
SELEX S&AS
(Formerly British Aerospace Systems)
37
Vacuum Casting Machines
Gold Star Powders has a range of casting and melting systems for both the industrial and jewellery
sectors. This technology makes the production processes faster, easier and more efficient in the
manufacture of cast jewellery.
Currently, there are two induction melting Vacuum Casting Machines available. The smaller model,
the GS380, has been designed with the small and medium sized caster in mind, with a crucible
volume of 2.25 kilos of 18-carat gold and a flask size up to 250mm tall.
The larger model, the GS595, is a fully automated casting machine, and is ideal for the highvolume casting facility. It has the ability to cast from as little as 3.4 kilos of 18-carat gold using the
smallest crucible, increasing to as much as 7.5 kilos of 18-carat gold using the largest crucible.
The GS595 has the following benefits:
•
•
•
•
60 Casting Programs, resulting in ease of operation.
Automatic locking system, making safety a priority when using this machine.
Faster metal flow into the mould for the highest quality castings.
Overpressure for optimum filigree work.
Gold Star is a brand name synonymous with quality products at competitive prices. This range of
casting machines further underlines our commitment to providing the discerning caster with the
best consumables and machinery to optimise efficiency and quality.
Specifications
GS380
GS595
Crucible Volume
170ccm = 2,5kg Au18ct*
245ccm = 3,6kg Au18ct*
Vacuum chamber for flasks
Up to 130mm x 260mm/
5“ x 10“ (perforated with
or without flange).
Smaller flasks are used
with an adapter
130mm x 260mm/5“ x 10“
(perforated with or
without flange).
Smaller flasks are used with
an adapter.
Automatic protective gas insert
Yes
No
Automated casting cycles
No
Over 70
Automatic flask and chamber lift
No
Yes
Data printer with diagnostic
system
No
Yes
Turbo pressure function
Yes
Yes
80 x 50 x 67
145 x 50 x 82
85kg
140kg
Dimensions in cm H x W x D
Weight
GS380.
Industrial and Jewellery Casting.
38
Induction Melting.
GS380
GS595
39
Consumables
Gold Star Powders stocks an extensive collection of consumables and spare parts, used on a daily basis, in any
jewellery or industrial manufacturing facility. Only a selection of consumables stocked is detailed below –
please refer to the website for the full listings. Gold Star will aim to deliver items as fast as possible all over the
world, and has the ability to manufacture bespoke consumables to suit your needs.
1
7
In addition to the Investment Powders, Waxes and Rubber we are able to offer, Gold Star has the ability to set
up a complete Turnkey Jewellery manufacturing set-up.
Stainless Steel Flasks
FJCA
Sizes are listed in the table. Flasks are available in both Non-Perforated, for
centrifugal casting, and Perforated & Flanged for vacuum casting. Custom
flasks can be manufactured to any size or shape.
2
Crucibles
FJCR
Gold Star stocks a full range of Crucibles to fit all makes and types of
casting machines. The crucibles are manufactured from a choice of materials
including: Carbon, Alumina, Alumina Prosolanie, Ceramic & Zircon and
Ceramic with a graphite liner. Please see website for more details.
3
Quartz & Carbon Rods
FJCMA-QR
Non-conducting Crucible Stirring Rods.
Diameters Available: 4, 6, 8, 10mm. Lengths Available: 200, 300mm.
4
Flask Handling Tongs
FJCA-SCI/IND
Stainless Steel (custom sizes available)
Available for Flask Diameters: 2, 3, 4, 5, 6, 7, & 8 inches.
5
Safety Glasses
FJCON-PPESG
Lens: Clear
Impact Resistance: CE-EN166, ANSI Z87.1
UV Protection: 99.9% (between 180 and 380nm).
6
Safety Helmets
FJCON-PPESH
Approval for use for protection against impact, liquid splash and molten
metal splash. Meets 120m/s impact strength and will resist radiant heat of
up to 1500°C.
7
Rubber Mixing Bowls
FJCON-BOWL
Flexible Rubber Mixing Bowls designed for mixing investment powder.
Sizes available: 0.5, 1 & 2 litre capacity.
8
Scalpels & Blades
FJCON-SUB
Solid Nickel Handle Scalpels (BS 2982, BS EN 27740, ISO 7740)
Carbon Steel Blades in packs of 10 (BS 2982, BS EN 27740, ISO 7740).
9
Silicone Mould Release
FJCMA-SRS
Spray Can, 340 grams, non-toxic, non-CFC gas.
Mould Frames
FJCMA-MF
Solid Aluminium Frames for vulcanising rubber moulds.
Size Available (length x width x depth): 73x47x19 and 73x47x25 (mm).
10
www.goldstarpowders.com
40
10
9
5
2
2
4
8
3
2
Height inches
Flask Sizes
Non-perforated
3
4
6
7
8
9
10
12
15
3
X
X
3.5
X
X
X
X
X
X
X
X
X
5
X
X
X
X
X
6
X
X
X
X
X
7
X
X
8
X
X
Perforated & Flanged
Diameter inches
1
6
4
X
Custom sized flasks are available to order.
41
In-House Calcining and Milling Facility
Cristobalite & Silica Manufacture
Gold Star Powders is the only manufacturer of Investment
Powder in the industry to have its own silica deposits, and
custom-built, $7.2 million rotary kiln and grinding facility, to
manufacture high-grade, unmineralised Cristobalite.
Set in the picturesque Derbyshire Peak District, you will find
Gold Star Powders Minerals Division. Here, raw materials used
in the manufacture of the finest-grade Investment Powder are
produced and milled to the most exacting standards. It is this
strict attention to particle size analysis that enables Gold Star
Powders to produce the variety of grades of raw material
necessary for the manufacture of such a wide variety of
products. From this facility, we ship high-grade, nonmineralised Cristobalite to our plants, worldwide.
Right: $7.2 million Calcining and Milling Facility.
42
Inline Particle Size Analyser.
Opposite: Gold Star Powders Mineral Division, located in the Peak District, Derbyshire.
43
Gold Star Powders UK
UK Production and Worldwide R&D Centre
INVESTMENT
POWDERS
Gold Star Technology
Gold Star Powders UK is at the heart of technology in the
development and testing of Investment Powders throughout
the Gold Star Group of Companies (that manufacture the
famous Gold Star brand around the world).
The extensive laboratories, sited in Newcastle-under-Lyme, are
staffed with highly-trained technicians, and are equipped with
state-of-the-art testing machinery, such as the XRF, XRD &
thermal expansion machines, which ensure that only raw
materials of the highest grades and quality are used in any of
our mixing facilities throughout the world. All Investment
Powder produced must pass stringent test-criteria specifications
before dispatch. Every batch of Investment Powder produced is
tested in a full casting trial in our in-house casting shop,
Only after passing these casting trials and showing no faults, is
the batch of powder released to the customer.
Our state-of-the-art, computer-controlled mixing plant and
bagging facility, consisting of two five tonne mixers, is also
based in Newcastle-under-Lyme. This is the most modern
Investment Powder manufacturing plant in the world and is the
largest of its kind, capable of producing upwards of 2,000
tonnes per month of Investment Powder on a 24 hours a day,
six days a week, shift pattern.
Automated Plant Control System.
Thermal Expansion Measurement.
44
XRD - Cristobalite & Silica Anaylsis.
XRF - Material Composition Anaylsis.
Opposite: UK facility bagging plant.
45
INVESTMENT
POWDERS
Siam Casting Powders Ltd.
Siam Casting Powders Ltd.
SCP is a joint venture between Gold Star Powders UK, and our Thai partners, to
manufacture Investment Powders in Thailand. All production development and
formulation is controlled by Gold Star Powders UK. Siam Casting Powders supplies
the finest-quality Investment Powders and materials for the local casting industries,
utilising High Grade unmineralised Cristobalite, supplied by Gold Star’s in-house
Calcining and Milling Facility in Derbyshire, England.
SCP offers a technical consultancy service throughout Thailand to help improve
casting quality and factory efficiency. Please contact SCP for more details.
For over 2500 years, Thailand has been a stronghold of Buddhism.
The Buddha’s teachings (Dharma) colour almost every aspect of life
within the kingdom.
Siam Casting Powders Team.
Factory opened 2002.
46
Siam Casting Powders Products
UK Equivalent
Product
LC Brass
GS LC Brass
Value (Red, Orange & Yellow)
GS 21
Best Cast
GS Delta
Professional
GS XL
Supreme
GS XXX
Supreme Plus
GS XXX Plus
Omega
GS Omega
Other Products
Supplied in Thailand
Injection Waxes
Silicone Rubber
Natural Rubber
Wax Injectors
Casting Consumables
www.siamcasting.com
INVESTMENT
POWDERS
Siam Casting Powders Ltd
Chiang Mai
General Manager:
Boonchana Anurak
Tel:
+66 34 246 037-8
Fax:
+66 34 246 039
Email:
[email protected]
Address:
185 Moo 5 Salaya
Bhudhamontol
Nakorn Phatom 73170
Thailand
Bangkok
Phuket
For your local
distributor details, see
www.goldstarpowder.com
The Phi Phi Islands in Phuket are widely considered to be among the most beautiful places in the world, and hence are also the prime
attraction of Krabi. The Phi Phi Islands is a chain of six islands; the second largest among them is the Phi Phi Le Island. Phi Phi Le is also
known as James Bond Island, Phuket, named after the 007 James Bond film - ‘The Man with the Golden Gun’ (1974).
47
INVESTMENT
POWDERS
Ultratec Ltd
Ultratec Investment Powder
Ultratec Jewelry Supplies Ltd is a sister company of Gold Star
Powders UK. It is committed to providing high-quality
Investment Powders, with consistent performance, that meet
the UK production and quality standards. Ultratec offers two
investment brands to the China market:
Gold Star range products have long been used by worldwide
customers. They are formulated specifically for casters who are
looking for the very best surface finish, and trouble-free
Investment Powder, every time.
Tecast Brand is also benefited from UK techniques, recipes
and finest raw materials. It is specifically designed for the
China market, and consists of TT Brass, TT Silver, TT Gold,
TT Gemcast, TT Resincast, TT330(Stainless Steel) and
TT530(Platinum). They are extremely easy to use and give
excellent results.
48
Ultratec
Products Name
UK Equivalent
Product
Gold Star 6
LC Brass
Gold Star 21
Gold Star XL
Gold Star 24
Gold Star XXX
Gold Star 28
Gold Star Gem Set
Gold Star 38
Gold Star Omega+
Gold Star HT
Gold Star HT
Gem Set
Gem Set
Atomic 78
Atomic 78
Other Products supplied in China
Injection Waxes, Silicone Rubber, Natural Rubber,
Vacuum Mixing Machines, De-wax and Burnout Furnaces,
Wax Injectors, Casting Consumables, Vacuum Casting
Machines.
The Great Wall of China.
INVESTMENT
POWDERS
FACTORY
WAREHOUSE
LOCATION CONTACT
ADDRESS
TELEPHONE / FAX / MOBILE
Pan Yu
Mr. Kevin Xie
Ultratec Ltd
Minli Industrial Zone,
Lan He Town, Pan Yu District,
Guangzhou, China 511480
Tel: +86 (0) 20 3997 0330
Fax: +86 (0) 20 8492 1620
Email: [email protected]
Mr. Howard Han
Tecast Trading (Guangzhou) Co. Ltd
No.567 Qiaoxing Road,
Shiqiao Town, Pan Yu District,
Guangzhou, China, 511400
Tel: +86 (0) 20 8480 0096
Fax: +86 (0) 20 8480 0090
Mob: +86 (0) 13922303060
Mr. Wilson Zheng
No. 315 the 5th Building Nanshen
Industrial Honggang Road Luoho,
Shenzhen, China, 518024
Tel: +86 (0) 755 2231 6620
Fax: +86 (0) 755 2231 6621
Mob: +86 (0) 13828851122
Mr. Lin
Mei Long Town, Hai Feng Xian,
Shan Wei City, Guang Dong
Province, 516400
Tel: +86 (0) 660 682 4422
Fax: +86 (0) 660 682 4422
Mob: +86 (0) 13927931193
Mr. William Ma
Shop 04, No.1 Building, No.33 Xian
Feng Road, Cang Shang District,
Fuzhou, China, 350007
Tel: +591 8347 7677
Fax: +591 8347 7677
Mob: +86 (0) 13805005871
Mr. Zhao
Xi Tian Cun, Chengyang Road,
Chengyang District,
Shi Shan Dong Province,
China, 266109
Tel: +86 (0) 532 8775 2210
Fax: +86 (0) 532 8775 2887
Mob: +86 (0) 13964886317
1
Pan Yu
2
Beijing
Shenzhen
6
Qingdao
Shanghai
5
Pan Yu
1 2
Shenzhen 3
3
Haifeng
4
Fuzhou
4 Haifeng
Fuzhou
5
Qingdao
Ultratec Jewelry Supplies (Guangzhou) Ltd.
Name:
Kevin Xie - General Manager
Tel:
+86 20 3997 0330
Fax:
+86 20 8492 1620
Email:
[email protected]
Address:
Minli Industrial Zone
Lan He Town, Pan Yu District
Guangzhou, China, 511480
6
For your local distributor details see
www.goldstarpowder.com
www.goldstarpowders.cn
49
INVESTMENT
POWDERS
Gold Star Powders Private Ltd. India is a sister company of
Gold Star Powders UK. It was incorporated in June 2001 with
the objective of serving the local industry more efficiently.
Investment Powders
Made in India
Gold Star Brass Cast
Gold Star 21 (Delta)
Gold Star XL
Gold Star XXX
Gold Star Omega
Gold Star Gem Set
Gold Star HT
Atomic 78
Other Products
Supplied in India
Injection Waxes
Silicone Rubber
Natural Rubber
Wax Injectors
Casting Consumables
LOCATION
Map Location
CONTACT NAME
ADDRESS
TELEPHONE / MOBILE / EMAIL
MR. K. KALYANARAMAN
GOLD STAR POWDERS PRIVATE LTD.
No 112 CHINNA AMMAN KOVIL STREET,
KALAVAKKAM, THIRUPORUR PANCHYAT,
KANCHIPURAM DISTRICT, PIN 603110
T +91 044-24962939
E [email protected]
2
MR.G.
DHARMENDRA
SOLANKI
GALA NO. 58A, RAJ INDUSTRIAL COMPLEX,
MILITARY ROAD, ANDHERI EAST, MUMBAI- 400059
T +91 022-29205019
M +91 2228592188
E [email protected]
3
MR. DURAI
MURUGAN
S 31, SUBASH NAGAR SHOPPING CENTRE, SASTRI
NAGAR, JAIPUR- 302016
M +91 9829013070
E [email protected]
MR. ANAND SETHIA
SETHIA AND COMPANY
44, 11 AGIARY LANE, GROUND FLOOR,
MUMBAI- 400003
T +91 022-23402331
M +91 9833173218
E [email protected]
MR. ANIL BABU
MODERN TOOLS
10 & 11, PRAKRUTHI BUILDING, SHOP NO.1
SIDDANA LANE, NAGARATHPET CROSS,
BANGALORE- 560002
T +91 080-41516550
M +91 9886192750
E [email protected]
MR. ANIL BABU
MODERN TOOLS
SHOP NO. 14, R.R COMPLEX, 537 BIG BAZAAR
STREET, COIMBATORE- 641001
T +91 0422-4355436
M +91 9362951616
E [email protected]
7
MR. RAVINDHARNATH
MULKA
KOVIDH ENTERPRISES
40O B BABU KHAN ESTATE, BASHEERBAGH,
HYDERABAD 500001
M +91 4066732267
E [email protected]
8
MR. SHANKARLAL
AGARI
GLOWEL CASTECH
F-181 GAUTHAM MARG, BEHIND BAGADIA
BHAWAN, C SCHEME, JAIPUR
9
MR. SANJIB
KUMAR MULLICK
RAMA TOOLS
VILL-KISMAT APURBAPUR, SINGUR-DISTRICT,
HOOGHLY, WEST BENGAL
M +91 9474124308
10
MR. CHOTA
PURMESSUR
CONHYDOSS
CPC JEWELLERY TOOLS CO. LTD
64 MENAGERIE ROAD CASSIS
PORT LOUIS
T +91 00230-2124897
M +91 00230-7736027
E [email protected]
11
MR. HIMESH
NAGPAL
GLOWEL METCHEM INDUSTRIES
523 JOSHI ROAD, KAROL BAGH,
NEW DELHI- 110005
T +91 011-25752454
M +91 9910921985
E [email protected]
12
MR. ANAND
MACCHAR
HITEN ENTERPRISE
1 GANDHI SMRUTI SOC, STREET NO.3,
PEDOK ROAD, RAJKOT- 360003
T +91 0281-6533085
M +91 9374106944
MR. RIZKY DEEN
COLOMBO MACHINERY & EQUIPMENTS LTD
No. 26B, ALWIS PLACE
COLOMBO 03
T +94 112449449
F +94 112449339
M +94 777343155
E [email protected]
CHENNAI
1
MUMBAI
JAIPUR
MUMBAI
4
BANGALORE
5
COIMBATORE
6
HYDERABAD
JAIPUR
KOLKATA
MAURITIUS
NEW DELHI
RAJKOT
SRI LANKA
13
50
T +91 0141-5103840
M +91 9928256698
www.goldstarpowders.in
INVESTMENT
POWDERS
Gold Star Powders Private Ltd
General Manager:
K. KALYANARAMAN
Tel:
+91 044 2496 2939
Fax:
+91 044 2496 1262
Email:
[email protected]
New Delhi
11
Jaipur
Kolkata
9
3 8
Rajkot
12
Mumbai
2 4
112 Chinna Amman Kovil Street
Hyderabad
Kalavakkam Village
7
Thiruporur Panchyat
Bangalore
1 Chennai
5
Kanchipuram District
Pin 603110, India
Coimbatore
Mauritius
10
6
Colombo 13
For your local distributor details,
see www.goldstarpowder.com
WAREHOUSE
DISTRIBUTOR
SRI LANKA
Taj Mahal is regarded as one of the seven wonders of the world. Some Western historians
have noted that its architectural beauty has never been surpassed.
51
INVESTMENT
POWDERS
Gold Star Brasil
Gold Star Brasil
Gold Star Powders is always keen to be as close as possible to
our customers and their individual needs, with manufacturing
facilities opened in India, Thailand and China in the past five
years. Our latest overseas joint venture project is in São Paulo,
Brasil.
Gold Star Brasil was founded in 2008. It produces the world
famous Gold Star jewellery Investment Powders in São Paulo
state, and distributes the complete range of investment
powders, waxes, machinery and consumables to the continent
of South America.
All of the Investment Powders are manufactured to the same
recipes as those produced in the United Kingdom, and all
powders will be subject to the same stringent quality checks.
These include laboratory testing for expansion, gloss-off and
setting times; each batch is also cast using both brass and silver
before being allowed to be despatched to the customer.
Backed by the technical support and raw materials from the
U.K., the entire continent of South America will benefit from
having the highest quality casting powders manufactured
locally.
Investment Powders
Made in Brasil
Gold Star LC Brass
Gold Star XL
Gold Star XXX
Gold Star Omega
Gold Star Gem Set
Gold Star H.T.
Platincast
Atomic 78
Other Products
Supplied in Brasil
Injection Waxes
Silicone Rubber
Natural Rubber
Wax Injectors
Casting Consumables
São Paulo
www.goldstarbr.com.br
52
INVESTMENT
POWDERS
Gold Star Brasil
Caracas
Venezuela
Colombia
Bogota
General Manager:
Mr Paolo Malfatti
Tel:
+ 55 11 9159 8728
Email:
[email protected]
Gold Star Brasil
Rua das Margaridas s/n
Terra Preta - Mairipora SP
CEP 07600 - 000
São Paulo, Brasil
Peru
Brasil
Lima
Belo Horizonte
Rio de Janeiro
São Paulo
Chile
Santiago
Buenos
Aires
Argentina
FACTORY
DISTRIBUTOR
For your local distributor details,
see www.goldstarpowder.com
Iguaçú Falls – Straddling the Brasil/Argentina border, at 11/2 miles across, this semi-circular waterfall is one of the
widest and most spectacular in the world.
53
INVESTMENT
POWDERS
Troubleshooting
Flashing
Rough Surfaces
54
Possible Fault Cause
Solution
Incorrect Water or Powder Ratio
Ensure Correct Ratio
Conventional Mix
Vacuum Mix
P:W
40:100
38:100
Incorrect Burnout Cycle
Follow recommended burnout cycle.
Ensure furnace ramp does NOT exceed 250ºC/Hr.
Ensure 1st stage burnout does NOT exceed 240ºC and is held for 4.5 hours minimum. If problem still occurs increase hold time.
Excessive Casting Forces
Centrifugal casting: Lower torque and RPM settings.
Vacuum casting: Reduce over pressure.
Disturbed Flask during setting
After investing bench set and do NOT move flask, strip base or remove tape for a minimum of 90 minutes.
Over working investment
Ensure all flasks are poured and removed from vacuum tank and put on bench to set by max. 9 minutes from starting mixing.
Waxes too close
Waxes too close together creating a very thin wall of investment. Waxes too close to side or top of flask; ensure min. 5mm
gap to top and sides of flask.
Slurry too hot or cold
Adjust slurry temperature to 21ºC +/- 1ºC by increasing or decreasing water temperature.
Moulds dried out before burnout
If flasks are left on bench for more than 4 hours before burnout place a damp towel over the tops of the flasks to stop them
drying out. Do NOT leave flasks in furnace overnight before burnout.
Flask base leak during investing
Ensure good seal between wax sprue and base. It is suggested that it be sealed with molten wax.
Solution
Overheated flasks
during burnout
Follow recommended burnout cycle.
Ensure furnace ramp does NOT exceed 250ºC/Hr.
Ensure 1st stage burnout does NOT exceed 240ºC and is held for 4.5 hours minimum. If problem still occurs, increase hold time.
Dust on waxes or trees
Ensure once waxes or wax trees are made, they are stored in a dry, clean and dust-free atmosphere. Do NOT store waxes or
trees in a dusty environment or investing room.
Metal temperature incorrect
Reduce or increase metal temperature (see burnout section).
Rough waxes
Ensure excessive talc or release agent is not used, as this will produce rough waxes and therefore rough castings.
Flask burns out too quickly
Do NOT burn out before minimum of 90 minutes after investment.
Under or over-worked
Follow the recommended mixing instructions (see product pages).
Steam de-waxed for too long
Steam de-wax for a maximum of 60 minutes at atmospheric pressure. If steam de-waxed for longer than 90 minutes,
the steam will start to erode the surface of the mould. Do NOT steam de-wax in a sealed container.
INVESTMENT
POWDERS
Non or partial fill
Bubbles
Blisters
Solution
Metal temperature incorrect
Increase metal temperature first before increasing the flask temperature (see burnout section).
Flask temperature incorrect
Increase flask temperature (see burnout section).
Incorrect feed / sprue system
Feed or gate should be attached to the thickest part of the casting. It should be at least 25% of the thickness of the
casting.
Insufficient centrifugal force
Increase torque first and then RPM of the centrifugal casting machine. Only increase by small amounts each time (5%).
Low vacuum when vacuum casting
Change oil in pump on a regular basis. Check seals for blockages in the vacuum pipes.
Not enough over pressure
Only increase over pressure by small amounts each time (5%).
Solution
Bad vacuum
Change oil in vacuum pump. Pump should be serviced on a regular basis.
Check for leaks in vacuum pipes and chambers.
Check mixing and pouring chamber are pulling equal vacuum levels.
Dust on waxes or trees
Ensure once waxes or wax trees are made, they are stored in a dry, clean and dust-free atmosphere. Do NOT store
waxes or trees in the same room that you weigh powder or invest in.
Rough waxes
Ensure excessive talc or release agent is not used, as this will produce rough waxes and therefore rough castings.
Under or over worked
Follow the recommended mixing instructions.
Not vacuuming flasks after pouring
Ensure flasks are vacuumed for 1 minute after being poured.
Solution
1st stage burnout hold too short
Ensure 1st stage burnout hold time at 220ºC is 4.5 hours. If problem still occurs, increase hold to 5.5 hours.
Flasks de-wax at too high a temperature
Do NOT exceed 240ºC in the 1st-stage burnout (see burnout section).
Flasks placed in furnace too soon
after investing
Do NOT burn out before min. 1 hour after investing.
Flask placed too close to
or touching elements
Leave a minimum of 50mm gap between flasks and elements.
55
INVESTMENT
POWDERS
Product Selection and Care
STAINLESS STEEL
(PALLADIUM)
18CT WHITE
PLATINUM
(NICKEL)
18CT WHITE
Ensuring the best results
PALLADIUM
(PALLADIUM)
14CT WHITE
(PALLADIUM)
Product Care
9CT WHITE
22CT YELLOW
18CT YELLOW
14CT YELLOW
12CT YELLOW
9CT YELLOW
SILVER
BRASS
ALUMINIUM
GOLD
Reseal bag after use, otherwise moisture in
air will damage Investment Powder and lead
to rough castings and cracking.
M028
INDUSTRIAL
M356
INDUSTRIAL
Store Investment Powder in an ambient
temperature of between 10°C & 35°C.
Temperatures outside this range may cause
product degradation and lead to casting faults.
LC
BRASS
XL
XXX
OMEGA+
ATOMIC
78
PLATINUM
CAST
HT
When quoting batch number to supplier
please provide both batch and reference
number.
BATCH
IDENTIFICATION
NUMBER
PRODUCTION
DATE OF
BATCH
56
Ensure minimum contact with moisture, and
store in a low-humidity environment with
good air circulation.
Store product off the ground, to avoid moisture
picked up through surface contact; preferably
on a pallet. Do not store on a damp pallet.
Gold Star Omega
PRODUCT TYPE
Batch: 78/01
Prod. Date: 19/02/2008
Ref: 209
BATCH
REFERENCE
NUMBER
22.5kgs
001
BAG NUMBER
OF BATCH
BAG WEIGHT
To avoid problems, aim to use Investment
Powder within 6 months of production date
(max 12 months); the production dates of
batches are on the batch label (see example).
INVESTMENT
POWDERS
Furnace Controller Guide
MAIN DISPLAY
DTC6
DISPLAY
INDICATORS
FIRING LAMP
The majority of casting faults are directly related to an incorrect burnout cycle or lack of control of the burnout
cycle. By using a high quality digital temperature controller such as the DTC6 many variables, that can lead to
problems associated with burnout, can be tightly controlled and thus dramatically reduce rework rates and
scrap levels in any scale of manufacturing facility.
Gold Star Powders, in conjunction with a UK digital instrument manufacturer, has designed the DTC6 digital
temperature controller specifically for the lost wax casting industry. The DTC6 works by controlling the
relay/contactor in the furnace (the DTC6 does not include a contactor or relay). All GSP furnaces are supplied
as standard with the DTC6 fitted, the product may also be purchased from GSP as a stand-alone unit to retrofit
to most makes of electric furnace.
CONTROL
KEYS
(5)
SEGMENT
MIMIC
DISPLAY
One of the major problems experienced in countries that suffer from regular power cuts is that the furnace
shuts off and will not complete the burnout cycle. The DTC6 has Power Failure Recovery facility so that, in the
event of a power cut, the controller logs the stage in the cycle and when the furnace is powdered up again
the controller re-heats the furnace back to the temperature where it lost power and continues with the
programmed burnout cycle (the controller will log cycle position for up to 2 hours).
Programming
A firing step within the burnout cycle program consists of a temperature ramp (positive or negative) followed
by a soak period. Between 1 and 9 steps may be used in a burnout cycle depending on the requirements of
the user.
The controller ramps the burnout furnace at the specified rate until the required soak temperature is reached.
The program then controls the furnace temperature at the specified soak temperature for the desired length
of time. Once this step is complete the controller then runs through the subsequent steps until the program is
complete. Once the program is complete the controller will display “END”.
Key Features
COOLING
RAMP LAMP
It is very important to soak flasks at the desired casting temperature for a minimum of 1 hour in order for the
core of the flask to decrease in temperature.
SOAK TIME LAMP
°C
Cooling
Soaking
NB: The DTC6 can only be used to control electrically powered furnaces.
Heating
Delay
t
SOAK TEMPERATURE LAMP
DELAYED
START LAMP
HEATING
RAMP LAMP
Easy to use
Power Failure Recovery
Delayed Start Facility 1 – 99 hours
9 Programs (up to 9 steps each)
Soak Time 1 – 99 hours
Ramp Rate 1 – 99 ?C/hour
Program Pause Facility
Energy Usage Display
Lockable Keyboard
57
INVESTMENT
POWDERS
Worldwide Distributor List
Algeria
Brasil
Czech Republic
France
India
contact GSP UK
Belo Horizonte
Kraslice
Paris
Chennai
BQZ Comercial Ltda
Mr Daniel Hadad Giffoni
Tel: +55 31 368 19400
Amati-Denak Spol Sro
Martin Cibulka
Tel: +420 168 686 531
ABF Distribution
Mr Chollet
Tel: +331 4797 0770
Mr K. Kalyanaraman
Tel: +91 44 2496 2939
São Paulo
Prague
Gold Star Brasil
Mr Paolo Malfatti
Tel: +55 11 9159 8728
Auren CZ s.r.o.
Radim Sida
Tel: +421 3663 12294
Germany
Indonesia
Bottrop-Kirchhellen
Jakarta
Bulgaria
Denmark and Sweden
KBO GmbH
Mr Franz Hall
Tel: +49 2045 9619
P T Makmur Meta Graha Dinamika
Mr B Sudin
Tel: +62 216 904432
contact GSP UK
Vallensbaek
Pforzheim
Aktiv Guld A/S
Mr Carsten Jensen
Tel: +45 43 66 2000
Linkenheil GmbH
Mr Manfred Linkenheil
Tel: +49 72312 1734
Iran
Egypt
Greece
Tel Aviv
Cairo
Athens
El Aroussi Trading & Chemical Co
Alex El Aroussi
Tel: +202 258 3491
St. Michailidis & Sons
Spiros Michailidis
Tel: +30 210 324 2270
B & B Benbassat Ltd
Mr Nissim Benbassat
Tel: +972 368 30216
Finland
Hungary
Croatia
Sorkkinen
Budapest
contact GSP UK
SAR-Machine OY
Mr Aimo Ranki
Tel: +358 28 651 789
Nicosia
AUREN Kft.
Mr Peter Toth
Tel: +36 1299 0938
Fax: +36 1299 0939
Joannou & Joannou Ltd
Mr Yiannos Ioannou
Tel: +357 227 5251
J Schmalz Budapest KFT
Mr Frank Oberfrank
Tel: +36 1203 4664
Argentina
Buenos Aires
contact GS Brasil
Armenia
Yerevan
Onyx
Gegham Madanyan
Tel: +374 1 541 102
Australia and New Zealand
Brisbane
Australian Jewellers Supplies Pty Ltd
Mark Walton
Tel: +61 7 3229 4955
Austria
Canada
contact GSP UK
Chile
Santiago
contact GS Brasil
contact GSP UK
Bahrain
Manama
Gemstones & Jewellers Pty Ltd
Mr A Saleh
Belgium
Kortrijk
L Buysschaert & Co B V B A
Luk Buysschaert
Tel: +32 5622 0549
58
Colombia
Bogota
contact GS Brasil
Cyprus
Tehran
contact GSP UK
Israel
INVESTMENT
POWDERS
Italy
Kuwait
Morocco
Phillipines
Romania
Arezzo
Mubarakiya
Casablanca
Metro Manilla
contact GSP UK
Self FIOA SRL
Mr Revilio Casi
Tel: +39 575 355 024
Arbash International
Younis Beg
Tel: +965600 1445
Ets Nil Abdeslam Import Export
Mr Nil Abdeslam
Tel: +28 0157 816 071
Solutionomics Inc.
Mr Daniel Zbinden
Tel: +63 2826 9137
Gerenzano-Saronno
Mario Di Maio Spa
Mr Eliseo Di Maio
Tel: +39 02968 2360
Vicenza
Lebanon
Beirut
Bimbo
Mr Krikor Touhfonian
Tel: +9611 263 054
Malaysia
Japan
Arena Ceria Trading
Mr Ham
Tel: +60 42 828629
Cast 18
Mr Kazuya Furuzono
Tel: +81 354 29 8470
Email:
[email protected]
Korea
Penang
Bijou Moderne BV
Thomas Bode
Tel: +31 010 529 6600
Poland
Warsaw
M W Cast
Walerek Walantinoviz
Tel: +48 227 961608
Van Amelsfoort
Jan Groos
Tel: +31 73 692 8050
Norway
Portugal
Gondomar
Maquinouro Maquinas E Ferramentas LD
Armando Da Silva
Tel: +351 224 835551
Oslo
Mauritius
Cassis
Allegra Creation Ltd
Mr Christian Poncini
Tel: +230 212 0818
AS Nogusra
Mr Odd Olsen
Tel: +47 22 966 100
Pakistan
P.R. China
Guangzhou
Tecast Trading (Guangzhou) Ltd
Mr Howard Han
Tel: +86 (0) 20 84 8000 96
Lahore
Incheon
Mirinae Co. Ltd
Mr C S Park
Tel: +82 325 810255
Bleiswick
S-Hertogenbosch
Tecnica Oro Srl.U.
Mr P L Vacca
Tel: +39 0444 914 257
Tokyo
Netherlands
Mexico
Merida-Yucatan
Stuller Service Centers
Mr M Moser
Tel: +999 942 7950
Iqbal Enterprises
Khalid Mirza
Tel: +92 4276 52443
Panyu
Ultratec Jewellery Supplies Ltd
Mr John Zhao
Tel: +86 203 997 0330
Russia
Moscow and St. Petersburg
ZAO PCF Sapphire
Mr I Zhuravlev
Tel: +74 957 394 311
Saudi Arabia
Jeddah and Riyadh
Gold & Jewellery Tools & Material Center
Mohammed Kumazi
Tel: +966 645 2714
Slovak Republic
Lavice
Auren SRO
Gabriel Novotny
Tel: +421 3663 1 3264
South Africa
Pretoria
Goldsmith & Jewellery Supplies
Mr Julian Edelson
Tel: +271232 31178
Peru
Lima
contact GS Brasil
59
INVESTMENT
POWDERS
Spain
Thailand
USA
Venezuela
Barcelona
Bangkok
Bremerton
Caracas
Hispana de Maquinaria SA
Sr. Eduardo Gracia
Tel: +34 93 309 1707
Siam Casting Powders Ltd
Boonchana Anurak
Tel: +66 34 246 037
Alpha Supply Inc
Mr Alan Clever
Tel: +1 206 577 2700
Email: addinc.@qwest
Inversiones Waymil C. A.
Mr Jose D. Garcia
Tel: +58 212 860 8385
Cordoba
Tet Design Co. Ltd.
Ratikorn
Tel: +66 18 212 863
East Brunswick
Raya
Sr. R Raya
Tel: +34 95 743 2326
Madrid
Rivero Rivero S.A.
Paloma Alegre Rivero
Tel: +34 91 445 9412
Switzerland
contact GSP UK
Turkey
American Jewelry Supply
Peter Feinerman
Tel: +1 732 432 0101
Email: [email protected];
[email protected]
Istanbul
Miami
Odak Kimya
Suleyman Sahin
Tel: +90 2126 389 417
BTI Landa
Mr. Elvis Tolido
Tel: +1 212 944 4944
U.A.E.
C R Hill Inc.
Mr Greg Koukoudian
Tel: +1 248 705 0475
Dubai
Syria
Aleppo
Hovanes D. Artinian
Mr Hovanes Der Artinian
Tel: +963 21 446 8208
Taiwan
Tainan
Asia Diamond Ind Co Ltd
Chen-Jung Kao
Harshad Trading Co Ltd
Mr Bhupesh H Dhakan
Tel: +97 14 226 1723
Newcastle-under-Lyme
Rhode Island
Gold Star Powders
Tel: +44 (0) 1782 663600
Bel Air Finishing Supply Inc
Mr Steven Alviti
Tel: +1 401 781 4408
Rundist Ltd
Ms Oksana Mochernyuk
Tel: +380 322 636 319
60
New Mexico
UK
Lviv
contact GSP UK
Michigan
Indian Jewellers Supply Co.
Mr Chris Caldes
Tel: +1 800 545 6540
Ukraine
Vietnam
If you are interested in becoming a dealer of
Gold Star Powder Products please contact:
Spencroft Road, Newcastle-under-Lyme
Staffordshire, ST5 9JE, England
Tel: +44 (0) 1782 66 36 00
Fax: +44 (0) 1782 66 36 11
Website: www.goldstarpowders.com
Best Practice
Temperatures & Ratios
Metal Pouring
Temp °C
Flask Temp °C
750 - 800
220 - 450
2.5 : 1
1020 - 1120
500 - 700
9:1
950 - 1050
450 - 650
10 : 1
9ct. Yellow
940 - 1040
500 - 600
11 : 1
12ct. Yellow
620 - 1020
500 - 600
12 : 1
14ct. Yellow
900 - 1000
500 - 600
14 : 1
18ct. Yellow
950 - 1050
500 - 650
16 : 1
22ct. Yellow
1040 - 1140
600 - 700
18 : 1
970 - 1070
580 - 680
12 : 1
14ct. White
1050 - 1170
600 - 700
14 : 1
18ct. White
1100 - 1250
600 - 740
16 : 1
Platinum (95%)
1900 - 2000
750 - 900
21 : 1
Stainless Steel
1625 - 1675
750 - 900
10 : 1
Palladium
1550 - 1600
750 - 900
12 : 1
Metal
Aluminium
Mixing Hints & Tips
Ensure correct powder-to-water ratio is used.
Brass
Silver (Sterling)
Never add water to powder as it will become lumpy when mixing
(always make sure you add water first).
Aim for a slurry temperature of 21°C for optimum casting results.
Use clean de-ionised water for investing.
Metal to
Wax Ratio
Regularly service and change oil in your vacuum pump for bubble-free castings.
Regularly calibrate weigh scale to achieve optimum powder & water weights.
Gold
Weigh out powder and water rather than using any other method of measurement.
9ct. White
Burnout Hints & Tips
Do not begin burnout process until 90 minutes after investing.
If flasks are to be left for more than 4 hours before burning out, place a damp
towel over the tops of the flasks to stop them drying out. If this is not done,
casting faults may occur.
Do not exceed 630°C at any stage of the burnout when casting stone in place.
Decreasing the length of your burnout will increase throughput, but may produce a
lower standard of surface finish or, in some cases, lead to mild flashing.
You will achieve better results fast-firing Vacuum Flasks rather than Centrifugal
Flasks, as the perforations in the Vacuum Flasks increase the investment surface
area, enabling the release of moisture from the flask during the first stage of the
burnout. Centrifugal Flasks may show signs of flashing when very rapidly fired.
Ensure flask holds at casting temperature for a minimum of 1 hour; it will take this
length of time for the core of the flask to fall to the temperature read-out of the
furnace.
Have your furnace calibrated every 6 months as a standard.
Ensure you have a high-quality digital temperature controller for your furnace
(available from www.goldstarpowders.com).
Training
Gold Star offers tailor-made training courses to suit your learning needs in
Investing & Casting at one of our factory sites, or at your own facility by
special arrangement.
Gold Star Training Locations:
UK
India
China
Thailand
Brasil
Staffordshire
Chennai
Panyu
Bangkok
São Paulo
Please refer to country sections for contact details.
61
Thailand
SIAM CASTING POWDERS LTD.
185 Moo 5 Salaya
Bhudhamontol
Nakorn Phatom 73170
Thailand
Tel : + 66 34 246 037-8
Fax: + 66 34 246 039
Email : [email protected]
Website: www.siamcasting.com
India
United Kingdom
EDINBURGH
DUBLIN

LIVERPOOL
GOLD STAR POWDERS
Spencroft Road
Newcastle-under-Lyme
Staffordshire, ST5 9JE
England
Tel: +44 (0) 1782 66 36 00
Fax: +44 (0) 1782 66 36 11
Website: www.goldstarpowders.com


 MANCHESTER
 EAST MIDLANDS
 BIRMINGHAM
LONDON

GOLD STAR POWDERS PRIVATE LTD
112 Chinna Amman Kovil Street
Kalavakkam Village
Thiruporur Panchyat
Kanchipuram District
Pin 603110, India
Tel: +91 44 2496 2939
Fax: +91 44 2496 1262
Website: www.goldstarpowders.in
China
GOLD STAR POWDERS CHINA
ULTRATEC LTD
Minli Industrial Zone, Lan He Town
Pan Yu District, Guangzhou
China 511480
Tel: +86 20 39970330
Fax: +86 20 84921620
Website: www.goldstarpowders.cn
Brasil
GOLD STAR BRASIL
Gold Star Brasil Indústria
E Comércio de Materiais
Para Fundição Ltda.
Rua das Margaridas s/n
Terra Preta - Mairipora SP
CEP 07600 - 000
São Paulo. Brasil
Tel: +55 11 9159 8728
Website: www.goldstarbr.com.br

gold star powders

Transcription

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