Surfaces for life.

ABRASIVES
Surfaces for life.
The Hermes product program for grinding and
finishing implants and surgical instruments
Hermes – a competent “grinding”
CONTENTS
AT HERMES, TRADITION HAS A FUTURE
Hermes –
a competent “grinding” partner all
over the world
Page 2
H
Knowing how to grind and finish
implants and surgical instruments
Page 4
Hermes owes this market position to its insistence on unsurpassed quality. We feel an
obligation to this tradition and it is our main priority for the future. This obligation is the
greatest incentive there is, and we devote all our energy and commitment to it – tradition
shaping the future.
Whatever the situation –
Hermes products for pre-grinding and
intermediate grinding and finishing
Page 6
Hermes bonded abrasives –
we find individual solutions for pregrinding and for the final polish
Page 8
ermes Schleifmittel is a German company located in Hamburg, with roots going back
to 1927. The company is one of the world’s key manufacturers of coated abrasives,
and since 1993, it has also occupied a leading market position in the production of
precision bonded abrasives.
Hermes maintains numerous production sites and sales offices in all the main industrial
and emerging countries of the world, underlining its international commitment and its
efforts to provide its customers with a competent local consulting service.
Visit our website
Page 10
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1
5
A SELECTION OF
OUR SITES
2
1 |Headquarters in Hamburg, Germany
2 |Hermes Schleifkörper GmbH, Dresden, Germany
3 |Hermes Austria
4 |Hermes USA
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2
5 |Hermes China
partner all over the world
SUPPORTING NATURE AND THE ENVIRONMENT
C
ompliance with national and international laws and regulations is one of the key principles
of Hermes corporate policy and protection of the environment is a core constituent of
our corporate responsibility.
As a consequence, as long ago as 1996, Hermes was the first European abrasives factory
to be successfully audited on a voluntary basis in line with the EMAS (Eco-Management
and Audit Scheme).
The management system currently being implemented covers all areas of the company, with
processes relevant to the environment, as well as to quality, being described and monitored
internally as well as certified externally by the TÜV-Nord organization in line with DIN EN
ISO 14001:2009.
QUALITY – OUR TRADEMARK
B
ound to tradition on the one hand, yet a pioneering developer of innovative products
on the other, Hermes places greatest emphasis on the production of high-quality,
state-of-the-art abrasives.
To enable this high standard of quality to be pursued and expanded still further in the
future, the TÜV NORD CERT auditing company awarded the Hermes Group the quality
seal for meeting the requirements of DIN EN ISO 9001.
Our customers – in other words you – benefit considerably from this reliability.
Hermes
HermesFrance
France
Hermes
Hermes Great
Great Britain
Britain
Hermes
HermesGermany
Germany
Hermes
HermesPoland
Poland
Hermes Bulgaria
Hermes China
Hermes Singapore
Hermes
HermesFrance
Canada
Hermes
HermesGreat
USA Britain
Hermes
HermesGermany
Austria
Hermes
HermesPoland
Romania
3
Knowing how to grind and
T
he demand for orthopaedic implants and surgical instruments is
rising steadily worldwide. The quality required from these kinds
of products is enormously high.
As a consequence, strict demands are also placed on the abrasives used to make these products: defined characteristic surface
values with low tolerances and rapid throughputs throughout the
entire grinding process. Hermes satisfies these requirements with a
complete product program for every processing step (pre-grinding –
intermediate grinding – finishing), the quality and economy of which
are most convincing of all.
PRE-GRINDING
The pre-grinding stage grinds cast, forged or rough-cut blanks of
implants or instruments, the majority made of stainless steel, titanium
or chromium-cobalt alloys, using mainly grit sizes 36, 60 and 80.
Primary applications
• Deburring and even out marks of cutting operations from initial
production (e.g. turning or milling)
• Removing surface changes, e.g. layers of scale or tempering
colors from preceding heat treatment processes
• Grinding to particular dimensions and shapes
This requires abrasives with convincing stability, high stock removal
rates and long tool lives. To select the right abrasive, the backing
needs to be as rigid as possible but as flexible as necessary.
Photo: SHL, Germany
The most temperature-intensive grinding of the workpiece takes place
at the pre-grinding stage and to ensure that entrained heat does not
cause any structural changes to the workpiece surfaces, Hermes
grinding belts are generally provided with an additional coating with
grinding aid for this process step to ensure “cool” grinding.
Recommended Hermes types
• High-performance belts with ceramic grain
CN 466 Z, CR 456 Z, CN 466 X-flex
• Zirconia alumina grinding belts
RB 486 44 Z, RB 486 24 YX
• Aluminum oxide grinding belt
RB 346 X-flex
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finish implants and surgical instruments
INTERMEDIATE GRINDING
Recommended Hermes types
Intermediate grinding serves primarily to prepare the surfaces of the workpiece as well
as possible for subsequent finishing processes. Intermediate grinding uses mainly grit
sizes 100, 120, 150 and 180.
• High-performance belts with
ceramic grain CR 456 Z,
CN 466 X-flex, CR 456 J-flex
Primary applications
• Zirconia alumina grinding belt
RB 486 24 YX
• Elimination of coarse marks of pre-grinding
• Reduction in surface roughness
The end-finish desired by the customer defines the number of intermediate grinding steps
and grit sequences required.
FINISHING
• Aluminum oxide grinding belts
RB 417 YX, RB 346 MJ,
RB 346 X-flex, RB 406 J-flex
• Recommended Hermes types
The finishing gives workpieces their final touch. The main grit sizes used are correspondingly fine: 220 and finer.
Primary applications
• Production of uniform visual/functional surfaces whilst maintaining characteristic
surface values determined by specifications
(e.g. degrees of gloss or roughness)
• Preparation for subsequent polishing operations
(e.g. grinding with Hermes microlite polishing wheels)
A special role is played by Hermes webrax abrasive web products which are used in the
form of belts or wheels and are especially suitable for matte finishing stainless steel surfaces.
• High-performance belt with
ceramic grain CR 456 J-flex
• Aluminum oxide grinding belts
RB 346 MJ, RB 346 X-flex,
RB 346 J-flex, RB 306 J-flex,
RB 406 J-flex
• webrax abrasive web tools
webrax-AN 702 belt
webrax-OA 713 GWS convoluted wheels
webrax-OA 710 LMO flap wheels
Stock removal comparison of Hermes J-flex cloth grinding belts
Parameters: stainless steel, grit size P 120, stationary belt grinder
Stock removal rate (cum.) [g]
150
CR 456 J-flex
RB 406 J-flex
120
RB 346 J-flex
90
60
30
0
0
1
2
3
4
5
6
7
Grinding time [min]
5
Whatever the situation – Hermes products for preHermes types
Grit range
Flexibility
Primary applications
Implants
Surgical instruments
Materials
Stainless steel
Titanium
Chrome-Cobalt alloys
Suitability for process
Pre-Grinding
Intermediate grinding
Finishing
CN 466 Z
Heavy-duty, stiff, high-performance
abrasive cloth with ceramic grain and
additional active ingredient coating,
especially suitable for high grinding
pressures
CR 456 Z
Heavy-duty, stiff, high-performance
abrasive cloth with ceramic grain and
additional active ingredient coating,
especially suitable for grinding
titanium and for moderate grinding
pressures
RB 486 44 Z
Heavy-duty, stiff zirconia alumina
abrasive cloth with additional active
ingredient coating for low grinding
temperatures
RB 486 24 YX
Heavy-duty, semi-stiff z
alumina abrasive cloth with
active ingredient coating
grinding temperatures, es
suitable for dry-grinding sta
+ 36 to + 80
+ 36 to + 120
+ 36, + 40, + 60, + 80
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RB 306 J-flex
Very flexible and adaptable aluminum
oxide abrasive cloth with good stock
removal rate for universal applications
in grinding surgical instruments
CR 456 J-flex
Very flexible and adaptable high-performance abrasive cloth with ceramic
grain and additional active ingredient
coating, especially suitable for chromecobalt alloys and titanium
RB 406 J-flex
Very flexible and adaptable aluminum
oxide abrasive cloth with special
active ingredient bonding, especially
suitable for grinding stainless steel
P 60 – P 320, P 400
+ 80 to + 220
P 60 – P 320, P 400
P 40 – P 400, P 60
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+ 36, + 40, + 60, + 80
Hermes types
Grit range
Flexibility
Primary applications
Implants
Surgical instruments
Materials
Stainless steel
Titanium
Chrome-Cobalt alloys
Suitability for process
Pre-Grinding
Intermediate grinding
Finishing
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
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Stiff
Semi-stiff
Flexible
Very flexible
RB 346 J-flex
Highly flexible aluminum
abrasive cloth with good
removal rates for universal
ons, especially suitable fo
smallest workpiece r
–
–
Highly flexible
-grinding and intermediate grinding and finishing
zirconia
h additional
g for low
specially
ainless steel
0, + 120
m oxide
d stock
l applicatir grinding
radii
00
RB 417 YX
Heavy-duty, semi-stiff aluminum
oxide abrasive cloth with additional
active ingredient coating for universal
application in grinding surgical
instruments
RB 346 MJ
Flexible aluminum oxide abrasive
cloth with very good edge-restoring
force for universal applications
in grinding surgical instruments,
especially in manual grinding
CN 466 X-flex
Flexible, high-performance abrasive
cloth with ceramic grain and with
additional active ingredient coating for
low grinding temperatures
RB 346 X-flex
In comparison to RB 346 MJ light
more flexible aluminum oxide abrasive
cloth with very good edge-restoring
force for universal application
in grinding surgical instruments,
especially in manual grinding
+ 60 to + 120
P 60 – P 800
+ 60 to + 240
P 60 – P 320, P 400
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webrax-AN 702
Cloth-reinforced abrasive web with
a fine grinding pattern, especially
suitable for finishing and matte
finishing stainless steel surfaces
webrax-OA 713 GWS
Convolutely wrapped, high-density
and sturdy abrasive web wheel with
aluminum oxide grain, especially
suitable for matte finishing stainless
steel surfaces
webrax-OA 710 LMO
Flexible but strong abrasive web flap
wheel with aluminum oxide grain,
especially suitable for matte finishing
stainless steel surfaces
microlite-Polishing wheels
Elastic and individually adjustable
polyurethane-based polishing wheel
with silicon carbide grain, especially
suitable for producing very fine and
high-quality surfaces
+ 80, + 100, + 180, + 280, + 320, + 400
+ 100, + 180, + 280
+ 80 to + 120, + 180, + 280
F 16 - F 600 (F 800)
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Different degrees of hardness possible
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Highly suitable
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Suitable
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Less suitable
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Hermes bonded abrasives – we find individual
solutions for pre-grinding and for the final polish
H
ermes Schleifkörper GmbH in Dresden is one of Europe’s leading
bonded abrasives factories. Its extensive product portfolio enables
Hermes to provide customers with application-specific and highly
economical solutions for processes which both precede and follow
grinding with coated abrasives.
HERMES SUPERABRASIVES FOR
CONSISTENT HIGH QUALITY AT
A HIGH LEVEL OF AUTOMATION
A great benefit of vitrified-bonded Diamond/CBN abrasives is that
they can be dressed without subsequent sharpening. This increases
the degree to which the dressing process can be both reproduced
and automated, something which becomes especially clear when
large numbers of items are ground. It simultaneously guarantees
consistently high product quality.
The Hermes bonding system allows the porosity of the tool to be
adapted to a specific grinding task on an individual basis. Specific
adjustment of the ratio of abrasive to pores furthermore makes
it possible to keep grinding forces low and facilitate higher
performance in the grinding process.
TRY US OUT. WE WOULD BE
PLEASED TO ADVISE YOU.
Our experts would be delighted to advise you on your specific
grinding task and will develop a customer-optimized solution
involving our abrasives. For contact and product information,
please visit our website at:
www.hermesabrasives.com
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In particular, Hermes Superabrasives make it possible
to grind economically high-alloyed steel which are
hard to cut. As implants and surgical instruments
are frequently made of stainless steel, titanium or
chrome-cobalt alloys, Hermes vitrified-bonded
Diamond/CBN abrasives are particulary suitable
for grinding workpieces of this nature.
These abrasives are characterized above all by
burr-free grinding of the materials mentioned; this
reduces re-grinding steps, improving the efficiency
and economy of the entire grinding process.
Product description
HERMES MICROLITE POLISHING WHEELS
FOR HIGH-QUALITY SURFACES
Hermes microlite polishing wheels satisfy the most discerning
requirements relating to the gloss and fine finish of surfaces when
a variety of materials are ground. They are elastic and their outstanding adaptability makes them especially suitable for finishing
and micro-deburring.
An elastic, polyurethane-based bond incorporating silicon carbide
grain allows microlite polishing wheels to adapt to individuallyshaped workpiece surfaces.
The finishing results are fine surfaces with a high degree of trueness
to specified workpiece surfaces. In many cases, microlite polishing
wheels lead to grinding steps being saved during finishing and thus
to higher productivity and economy.
Hermes microlite polishing wheels should preferably be used where
high-quality surfaces cannot be achieved using other abrasives.
Grain
Grit range
Bonding
Hardness
Wheel Ø
Wheel width
Permitted cutting
speed
Silicon carbide, green
F 16 - F 600 (F 800)
Polyurethane BU10 - BU70
30° - 100° Shore A
40 mm - 400 mm
10 mm - 150 mm
Depending on hardness
18 m/s - 35 m/s
Product engineering
Stock removal on the workpiece is determined to a significant
extent by the hardness and adaptability of the microlite
bonded abrasives.
Stock removal Spanabnahme
Low
High
Low
Hardness
High
Adaptability
Experience of grinding processes using conventional bonded
abrasives or coated abrasives cannot be transferred to microlite
bonded abrasives in terms of grit size and grinding pattern
achieved. Please ask our technical experts for references.
Conventional dressing tools can be used to profile microlite
bonded wheels.
Bondings and hardness range
Bonding
BU10
BU20
BU30
BU40
BU50
BU60
BU70
Hardness (Shore A)
Very soft
Soft
Medium soft
Medium
Medium hard
Hard
Very hard
30° - 60°
60° - 80°
80° - 95°
Safet y instructions
The diameter of the clamping flange should be 2/3 of the
diameter of the microlite polishing wheel.
The FEPA safety recommendations for the correct use of
bonded abrasives should be observed when grinding.
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Visit our website
H
ermes Group websites are continuously updated and form an important information
platform for customers and interested parties.
Here you will find virtually all the information which is useful when planning and purchasing
Hermes abrasives.
Of course our website is set up on an international basis. Please use the different access
options to enable you to obtain information about Hermes abrasives tailored to your
specific regional market.
Europe
www.hermes-abrasives.com
North and Central America
www.hermesabrasives.com
Asia and Australia
www.hermesabrasives.com.cn
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H
ermes websites use databases to inform you about new products and application solutions and to provide you with facts
and figures about the Hermes Group.
Numerous useful functions help you find out quickly and easily
everything you need to know about Hermes abrasives. In the
“Product Finder” for example, enter simple search queries to find the
correct Hermes type and have its key product information (such as
product structure and benefits) and primary applications displayed.
Alternatively, use the interactive “Contact Finder” for a list of Hermes
experts (both office-based and sales) – all over the world, of course.
Regardless of where you are on our websites, whether in the
“Product Finder” or in the application solutions or in the “Service”
area – you always have the option of downloading information about
our products and application solutions for immediate use on your
PC, tablet or smartphone.
Try us out.
We look forward to your visit.
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Hermes Abrasives Ltd.
524 Viking Drive
Virginia Beach, VA 23452
Voice: 757-486-6623 | 1-800-464-8314
Fax: 757-431-2370
[email protected]
www.hermesabrasives.com
231 US 21.21 . The right to make amendments is reserved.