Cress Brochure.indd

Cress Furnaces
Meeting your needs in different applications:
Metal, Glass and Quartz
Cress Manufacturing Co.
Bringing you years of
experience in the
heat treating industry.
Quality low cost
with a fast turnaround.
Let us help you with your heat processing needs.
Cress Manufacturing Company Inc.,
is a leader in the industry of manufacture of electric
furnaces. We are an organization that provides
services and goods for the heat treating industry.
Our goal is to achieve an excellent product to satisfy
the needs and requirements of our customers.
Cress was founded in 1973, as a company with a
simple concept to provide exceptionally high quality
products and services. With this goal in mind, Cress
has evolved into a very important manufacturer and
distributor of heat treating furnaces, in the United
States and many other countries. We manufacture,
export and distribute heat treating furnaces for the
metal industry, quartz glass, industrial ceramics,
jewelry, porcelain, pottery, ornamental ceramics
and many other applications.
For our company, innovation is essential to
transform a good idea into a product or service of
high value to our customers.
We can adapt to the needs of our customers;
therefore, if you have something in mind we can
build it for you.
With these ideas in mind, we strive to provide
better services and products that will last and
provide years of service.
Furnace Selection
Our industrial furnaces can be classified as one of two basic types, “Heat Treating Furnaces” also known as
hardening furnaces and “Draw Furnaces” also known as annealing, tempering or forced convection furnaces.
Heat treat (Hardening) furnaces have higher heat output power than draw furnaces due to the elevated
temperatures at which they operate. Heat transfer to the tool steel is accomplished by a very efficient
process called direct radiation. Temperature uniformity in these furnaces is best in the red heat range.
Normal maximum temperature is 2250 °F (1232 °C). Optional 2400 °F (1316 °C) maximum temperature
versions are available.
Draw furnaces are used for tempering and other low temperature processes. They normally operate
at temperatures below red heat range where heat transfer to the tool steel is accomplished by the process
of convection heat transfer. To increase convection efficiency, these furnaces are equipped with a fan in
the heating chamber to move air (Forced Convection). This delivers a temperature uniformity of ± 10 °F
(± 6 °C) or better. Maximum temperature is 1250 °F (677 °C). Optional 2000 °F (1093 °C) maximum
temperature versions are available.
Heat treating processes consist of two basic steps, hardening and tempering.
Hardening processes occur at high temperatures that are well into the red heat range. Drawing, tempering
and annealing processes normally occur at temperatures below red heat range.
When a part is hardened, it is heated to a high temperature, held there for a required time period, then
removed from the furnace to be quenched (Cooled). This is usually accomplished by submerging the part into a
liquid quenching material or by placing the part on a cooling rack in still air. The part should only be cooled to
about 150 °F (66 °C), and then placed into a furnace at the tempering temperature. Due to the heat treat furnace
not being able to cool as fast as the part, it is best to have a separate furnace for each step of the process.
2
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
Digital Temperature Control Selection
Digital temperature controls fall into two basic
types, process controllers and high limit controls
(over temperature controls).
Process Controls handle the temperature and
time requirements of the heat treat processes. These
controls come in two types, non-programmable
(single set point) and programmable.
Non-Programmable controls such as the model
935 are a single set point control, you simply input
the desired temperature, along with a length of time
to hold this temperature once achieved. The furnace
heats to the desired temperature as fast as possible,
holds for the amount of time, then ends the process.
At the end of the process, the control can either hold
the temperature or let the furnace cool down. The
timer can be disabled. When disabled the control only
requires a temperature setting input. The furnace will
stay at the set temperature until changed or turned
off. This is the least expensive standard control.
Programmable Controls such as the models SD4R
and the F4H allow the heat up rate to be controlled,
temperature can be ramped down as well as ramped
up, multi-step heat treating can be input as a single
process, and heat treat process programs can be
stored in the controls memory for easy and accurate
repeatability. In manual mode (non-program), the
controls work the same as the model 935 with the
timer disabled.
High Limit Controls such as the model LV help
protect the furnace and load in the case of a failure
in the primary (process) control or other related
primary control loop components. The high limit
control loop is completely independent of the
primary control loop.
All control types are available with an optional
audible alarm feature, which can signal a given
process point or end of process.
The programmable process controls are available
with an optional data communication package which
allows full control interface with a computer.
WATLOW SD4 STANDARD CONTROL
FOUR 10 STEP PROGRAM MEMORY FILES
Microprocessor-based, ¼ DIN programmable
ramping control providing four, 10 step
program memory files, or easy to use
non-ramping set point operation. The SD4
is designed to operate in the most demanding
industrial environments.
Interface: Front panel push buttons, LED displays
WATLOW F4H CONTROL
250 STEP RAMPING CONTROL
This microprocessor based ¼ DIN ramping
control providing 250 steps of programmability
within up to 40 nameable profiles.
Control over broad temperature ranges using
the four sets of PID parameters.
Interface: Membrane front panel, single four
digit LED’s with second four line LCD display.
WATLOW 935 CONTROLS
Microprocessor based
single set-point control
with soak timer.
Interface: Membrane front
panel, single four digit LED’s
WATLOW HIGH LIMIT
CONTROL OPTIONAL ADDITION
TO PRIMARY CONTROL
This FM approved limit
control is operated using
a separate thermocouple.
Mechanical relays break
power to the elements when
tripped. A High Limit Control
gives added assurance at a small cost that the furnace and
materials fired do not exceed the temperature indicated.
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
3
Models C-601 and C401H
USES: These models are designed for those users who require automatic
temperature controlled furnaces from 250° F to 2000° F (Model C-601) or up to 2250°
F (Model C401H) at a low cost. An ideal unit for many of the small jobs found in Tool
rooms, Production Shops or Laboratory.
TEMPERATURE CONTROL: Auto tuning Microprocessor – Based controller.
ELEMENTS: C-601 chrome nickel wire. C401H — High Temperature
iron-aluminum wire.
WIRING: Furnace is completely wired and equipped with cord ready to
plug into a 115 Volt outlet. Control, relay and wiring connections are enclosed
on the base.
GENERAL CONSTRUCTION: Furnace case of sheet steel is assembled by use of
electrical welding and sheet metal screws. The spring counter-balance door rises
vertically on lever arrangement keeping the hot face away from operator. The C401H
walls and door are constructed of high quality insulating brick backed by 1800° F block
insulation. Furnace is finished in heat resistant hammer tone gray.
SAFETY SWITCH: These models come equipped with a door safety switch.
When door is opened, power is disconnected from the heating elements.
Options:
Dual chamber • Stainless steel case
Audible process alarm.
MODEL
CHAMBER
SIZE
W L H
OVERALL
SIZE
W
L
H
MAXIMUM INTERMITTENT
TEMPERATURE
MAXIMUM
CONTINUOS
TEMPERATURE
KW
INPUT
WEIGHT / LBS
C401H
6.5” 9” 5.5”
15.5” 17.5” 22”
2250˚ F
2000˚ F
1.6
100
C601
8.5” 10” 6.5”
15.5” 17” 22”
2000˚ F
1800˚ F
1.4
100
Model C 133 and C136
USES: These furnaces are designed for general use in the shop, laboratory or factory
where temperatures from 300˚ F to 2250˚ F are required. They are used for heat treating
metal, assaying and all types of testing.
TEMPERATURE CONTROLS: Auto tuning Microprocessor-based controller.
ELEMENTS: High temperature iron-aluminum alloy wire elements are coiled and
mounted on the side walls in porcelain plates.
THE C133 has a bottom element mounted in groves in floor and covered by
refractory heart plate.
MODEL C136 assaying furnace has no bottom element and the side elements are raised
1.75” above the floor to prevent burnout due to spillage.
GENERAL CONSTRUCTION: Case is constructed of heavy gauge sheet steel and
finished in gray hammertone. The easily operated, counter-balanced door is always away
from operator. All walls and door are constructed of the finest quality insulating fire
brick backed by 1800˚ F block insulation. Comes complete with cord and plug.
SAFETY SWITCH: These models come equipped with two door safety switches.
When door is opened, elements are disconnected from power source. Solid state zero
voltage switching of power to elements.
OPTIONS:
C136 available as a dual chamber furnace • Assaying, includes, embedded elements and a clean air exhaust system installed
Stainless steel port option for protective inert atmosphere • Audible process alarm
MODEL
4
CHAMBER SIZE
W
L H
OVERALL SIZE
W
L
H
MAXIMUM INTERMIT- MAXIMUM CONTINUOUS
KW
WEIGHT
TENT TEMPERATURE
TEMPERATURE
INPUT
LBS
C133
11.5” 13” 8”
26”
28” 24”
2250˚ F
2000˚ F
3
200
C136
11”
15.5” 17” 22”
2250˚ F
2000˚ F
3
200
13” 8”
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
Bench Top Heat Treating Furnaces
USES: These furnaces are designed for general use in the shop, laboratory or
factory where temperatures from 300˚ F to 2250 °F are required. They are used
for heat treating metal, assaying and all types of testing. 2400˚ F Maximum
temperature option available at additional cost.
TEMPERATURE CONTROLS: Auto tuning Microprocessor-based controller.
HEATING ELEMENTS: Alloy wire elements are coiled and mounted on the
side walls in easy to change porcelain plates.
GENERAL CONSTRUCTION: The furnace case is constructed of heavy
gauge sheet steel and finished in gray hammertone. The walls and door are
constructed of the finest quality insulating fire brick backed up by 1800˚ F
block insulation.
SAFETY SWITCH: These models come equipped with dual door safety
switches. When the door is opened, power is disconnected from the heating
elements.
DOOR: The counter balanced easy to operate door, opens up and away from
the furnace, keeping the hot side away from the operator.
A KAOWOOL® rope seal is installed on the door where it meets the chamber.
Options:
Stands and quench tanks for these model furnaces are available for an additional cost
Optional inlet port for protective inert atmosphere is available
Optional high limit control available • Audible process alarm
HEAT TREAT FURNACES
MODEL
CHAMBER
SIZE
W L H
OVERALL SIZE
W
L
H
MAXIMUM
INTERMITTENT
TEMPERATURE
MAXIMUM
CONTINUOUS
TEMPERATURE
KW INPUT
WEIGHT
LBS
C1228
12” 20” 8”
25” 34”
28”
2250˚ F
2000˚ F
8
300
C1232
12” 32 ” 8”
25” 45”
28”
2250˚ F
2000˚ F
5
350
C1240
12” 40” 8”
25” 54”
28”
2250˚ F
2000˚ F
5
600
C1250
12” 50” 8”
25” 64”
28”
2250˚ F
2000˚ F
11.5
650
C122012
12” 20” 12”
25” 34”
32”
2250˚ F
2000˚ F
5
450
C162010
16” 20” 10”
29” 34”
31”
2250˚ F
2000˚ F
9
400
C162012
16” 20” 12”
29” 34”
33”
2250˚ F
2000˚ F
9
550
C163210
16” 32” 10”
29” 46”
31”
2250˚ F
2000˚ F
11.5
500
C163212
16” 32” 12”
29” 46”
33”
2250˚ F
2000˚ F
11.5
550
Heat treat with the inimitable Cress C1228 Furnace, amazingly accurate.
The ultimate Furnace-Control Combination that insure precisely repeatable results.
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
5
Bench Top Tempering Furnaces
OPTIONS:
Stands and quench tanks for these
model furnaces are available for an additional cost
Audible process alarm
Optional high limit controls available
6
DRAW UNITS: These models are equipped with a stainless
steel fan and motor for forced convection temperature
uniformity.
USES: These furnaces are designed for general use in
the shop, laboratory or factory where temperatures from
300-1250˚ F. ±10 °F are required. They are used for such
purposes as tempering, annealing and stress relieving. 2000˚
F maximum temperature option is available for all models at
additional cost.
TEMPERATURE CONTROLS: Auto tuning
Microprocessor-based controller and solid state relays for
precise temperature control.
HEATING ELEMENTS: Alloy wire elements are coiled and
mounted on the side walls in easy to change porcelain plates.
GENERAL CONSTRUCTION: The furnace case is
constructed of heavy gauge sheet steel and finished in gray
hammertone. The walls and door are constructed of the
finest quality insulating fire brick backed up by 1800˚ F block
insulation. Comes complete with cord and plug.
SAFETY SWITCH: These models come equipped with
dual safety switches. When the door is opened, power is
disconnected from the heating elements and fan motor.
DOOR: The counter balanced easy to operate door, opens
up and away from the furnace, keeping the hot side away
from the operator.
A KAOWOOL® rope seal is installed on the door where it
meets the chamber.
MODEL
CHAMBER
SIZE
W L H
C1228 DW
12” 17” 8”
25” 43”
28”
1250˚ F
MAXIMUM
CONTINUOUS
TEMPERATURE
1000˚ F
C1232DW
12” 29” 8”
25” 54”
28”
1250˚ F
1000˚ F
5
500 lbs
C1240DW
12” 37” 8”
25” 62”
28”
1250˚ F
1000˚ F
5
700 lbs
C1250DW
12” 47” 8”
25” 63”
28”
1250˚ F
1000˚ F
7
850 lbs
C122012DW
12” 17” 12”
25” 43”
32”
1250˚ F
1000˚ F
3.5
550 lbs
C162010DW
16” 17” 10”
29” 43”
31”
1250˚ F
1000˚ F
6
500 lbs
C162012DW
16” 17” 12”
29” 43”
31”
1250˚ F
1000˚ F
6
650 lbs
C163210DW
16” 29” 10 ”
29” 54”
31”
1250˚ F
1000˚ F
7
600 lbs
OVERALL SIZE
W
L
H
MAXIMUM
INTERMITTENT
TEMPERATURE
KW
INPUT
WGHT/LBS
3.5
400 lbs
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
Assaying Bench Top Furnaces
USES: These furnaces are designed for assaying use in the shop, laboratory
or factory where temperatures from 300˚ F to 2250°F are required. They are
used for assaying, heat treating metal and all types of testing.
TEMPERATURE CONTROLS: Auto tuning Microprocessor-based
controller.
SPECIAL FEATURES: Embedded elements and clean air exhaust system is
installed.
GENERAL CONSTRUCTION: The furnace case is constructed of heavy
gauge sheet steel and finished in gray hammertone. The walls and door are
constructed of the finest quality insulating fire brick backed up by 1800˚ F
block insulation. Alloy wire elements are coiled and mounted on the side
walls in easy to change porcelain plates.
SAFETY SWITCH: These models come equipped with dual door safety
switches. When the door is opened, power is disconnected from the heating
elements.
DOOR: The counter balanced easy to operate door, opens up and away
from the furnace, keeping the hot side away from the operator.
A KAOWOOL® rope seal is installed on the door where it meets
the chamber.
OPTIONS:
Stands and quench tanks for these model furnaces
are available for an additional cost.
Optional inlet port for protective inert atmosphere is available.
Optional high limit control available.
Audible process alarm.
HEAT TREAT FURNACES
CHAMBER SIZE
W L H
OVERALL SIZE
W L H
MAXIMUM INTERMITTENT
TEMPERATURE
MAXIMUM CONTINUOUS
TEMPERATURE
KW
INPUT
WEIGHT
LBS
AC136
11” 13 ‘ 8”
23.5” 32” 27
2250˚ F
2000˚ F
3
200
AC1228
12” 20” 8”
25” 34”
28”
2250˚ F
2000˚ F
8
300
AC1232
12” 32 ” 8”
25” 45”
28”
2250˚ F
2000˚ F
5
350
AC1240
12” 40” 8”
25” 54”
28”
2250˚ F
2000˚ F
5
600
AC1250
12” 50” 8”
25” 64”
28”
2250˚ F
2000˚ F
11.5
650
AC122012
12” 20” 12”
25” 34”
32”
2250˚ F
2000˚ F
5
450
AC162010
16” 20” 10”
29” 34”
31”
2250˚ F
2000˚ F
9
400
AC162012
16” 20” 12”
29” 34”
33”
2250˚ F
2000˚ F
9
550
AC163210
16” 32” 10”
29” 46”
31”
2250˚ F
2000˚ F
11.5
500
AC163212
16” 32” 12”
29” 46”
33”
2250˚ F
2000˚ F
11.5
550
MODEL
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
7
Dual Furnace
OPTIONS:
High limit controls available.
Inlet port for protective inert atmosphere is available.
480 volts.
3 phase.
Audible process alarm.
MODEL
8
UPPER
CHAMBER
SIZE
W L H
C136D
10.5” 13” 8”
C2121
LOWER
CHAMBER
SIZE
W
L H
USES: Designed for those who desire a hardening furnace, a
quench tank plus a separate furnace for tempering or drawing
all within a Minimum floor space. The two chambers allow
for immediate tempering or drawing after quench without
waiting for the hardening furnace to cool to the lower
temperature required.
Controls: Both chambers are equipped with their own
electronic control, thermocouples and solid state relays. Auto
tuning microprocessor based controls are accurate to ± 1/4 of
1%. Each chamber is equipped with door safety switches
that remove power from that chambers heating elements and
fan blower.
HEATING ELEMENTS: Alloy wire elements are coiled and
mounted on the side walls in easy to change porcelain plates.
GENERAL CONSTRUCTION: Case is constructed of
galvanized sheet metal and mounted in angle steel frame. Space
is provided for air circulation between chambers, the quench
tank is stored beneath the lower chamber and can be rolled
out for use. The control panel face is attractive brushed
stainless steel.
The upper chamber door rises vertically, the lower chamber
door swings to the side. A heavy duty chrome plated latch
is used to hold the lower door closed. The lower chamber is
equipped with a stainless steel, centrifugal type fan to circulate
the air and provide very close temperature gradients. The fan is
operated by a 1/4 HP motor.
Easy access to controls and wiring is provided by removable
side panel on control cabinet.
Welded steel plate quench tank on caster is standard on most
dual units.
Door seal is standard for inert protective atmosphere on 2250˚F
chambers.
OVERALL SIZE
W
L
H
MAXIMUM
TEMPERATURE
UPPER
CHAMBER
MAXIMUM
TEMPERATURE
KW WEIGHT
LOWER
INPUT
LBS
CHAMBER
10.5”
10” 8”
25” 43”
28”
2250˚ F
1250˚ F
6
400
12” 20” 8”
12”
17” 8”
36” 38”
56”
2250˚ F
1250˚ F
8.5
800
C122012D
12” 20” 12”
12”
17” 12”
37” 38”
64”
2250˚ F
1250˚ F
8.5
950
C1232D
12” 32” 8”
12”
29” 12”
36” 50”
56”
2250˚ F
1250˚ F
8.5
900
C1240D
12” 40” 8”
12”
37”
8”
36” 58”
56”
2250˚ F
1250˚ F
516
1400
C163210D
16” 32” 10”
16”
29” 10 ”
43” 60”
62”
2250˚ F
1250˚ F
18.5
1400
C163212D
16” 32” 12”
16”
29” 12”
43” 60”
66”
2250˚ F
1250˚ F
18.5
1400
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
AE Furnaces Single Chamber
USES: These furnaces are designed for heavy duty, larger volume jobs requiring
controlled temperatures up to 2100 ºF continuous or 2250 ºF intermittent.
CONTROLS: These furnace come standard with a digital programmable main
control and a digital high limit safety control. Solid state power switching to the
heating elements, and dual door limit safety switches that interrupt power to the
elements when the door is opened.
ELEMENTS: High temperature alloy wire elements are mounted in porcelain
plates on the walls and floor and in grooves in the brick door, this provides all
around heating and close gradients throughout the furnace chamber. A ceramic
hearth plate covers the floor element.
GENERAL CONSTRUCTION: Case is finished in a pleasing gray
hammertone. The counter-weighted vertical rising door keeps the hot face away
from the operator, it opens easily, remains securely in both the open and close
positions and includes a Kaowool® rope seal. All walls and door are constructed
of 4 ½” of the finest quality insulating fire brick backed up by 2” of 1800 ºF block
insulation. This combination of insulation and wall thickness helps to give fast
heat up and excellent heat retention for economical operation. All Standard 240
VAC, 3 Phase.
Options:
Side opening door.
DW models for drawing include stainless steel fan to circulate air and provide
very close temperature gradients.
Quench tanks for AE models are available for an additional cost.
Stainless steel port option for protective inert atmosphere operation is available.
Optional 208 or 480 VAC, 3 Phase.
Draw units available with an optional 2000˚ F Maximum temperature fan.
Audible process alarm.
AE HEAT TREAT FURNACES SPECIFICATIONS
MODEL
CHAMBER
SIZE
W L H
OVERALL SIZE
W
L
H
MAXIMUM
INTERMITTENT
TEMPERATURE
MAXIMUM
CONTINUOUS
TEMPERATURE
KW
INPUT
WEIGHT/LBS
AE1520
15” 20” 15”
33” 46” 76”
2250˚ F
2100˚ F
9
1200
AE1824
18” 24” 18”
36” 50” 70”
2250˚ F
2100˚ F
14
1400
AE1836
18” 36” 18”
36” 62”
70”
2250˚ F
2100˚ F
20
1800
AE1848
18” 48 ” 18”
36” 74”
70”
2250˚ F
2100˚ F
23
2200
DRAW UNITS
AE1520DW
15” 15” 15”
33” 46”
67”
1250˚ F
1200˚ F
9
1400
AE1824DW
18” 19” 18”
36” 50”
70”
1250˚ F
1200˚ F
14
1600
AE1836DW
18” 31” 18”
36” 62”
70”
1250˚ F
1200˚ F
20
2050
AE1848DW
18” 43” 18”
36” 74”
70”
1250˚ F
1200˚ F
23
2400
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
9
AE Dual Furnaces
Models: AE1520D, AE1824D,
AE1836D and AE1848D
USES: Designed for those who desire a large hardening furnace
plus a separate furnace for tempering or drawing, all within a
Minimum floor space. The two chambers allow for immediate
tempering or drawing after quench without waiting for the
hardening furnace to cool to the lower temperature required.
CONTROLS: These furnaces come standard with two sets
of individual digital programmable control and a digital high
limit safety control. Solid state power switching to the heating
elements. Each chamber is equipped with dual door
limit safety switches that interrupt power to the
elements when the door is opened. Fan stops when
lower door is opened. (Note: door blocks view of
the lower set of controls)
ELEMENTS: High temperature alloy wire elements
are mounted in porcelain plates on the walls and
floor and in grooves in the brick door, this provides
all around heating and close gradients throughout
the furnace chamber. A ceramic hearth plate covers
the floor element.
GENERAL CONSTRUCTION: Furnace frame is constructed
of heavy steel angle with 18 gauge sheet steel metal panels to
form exterior case. Door of upper unit rises vertically and the
door of the lower unit swings to the side. A Kaowool® rope seal
is installed on the upper and lower doors where it meets the
chamber. A chrome refrigerator latch is used to hold the lower
door closed. Lower unit is equipped with an stainless steel,
centrifugal type fan to circulate the air and provide very close
temperature gradients. The fan is operated by a 1 HP motor. All
Standard 240 VAC, 3 Phase.
OPTIONS:
Both doors side opening • 2000 ºF lower chamber
Stainless steel port option for protective inert atmosphere
operation for upper chamber.
Quench tanks for AE models are available
for an additional cost.
Audible process alarm.
Optional 208 or 480 VAC, 3 Phase.
AE DUAL FURNACES SPECIFICATIONS
MODEL
UPPER
CHAMBER
SIZE
W L H
LOWER
CHAMBER
SIZE
W L H
AE1520D
15” 20” 15 ”
15” 15” 15 ”
33” 46”
67”
2250˚ F
1250˚ F
18
2000
AE1824D
18” 24” 18”
18” 19” 18”
36” 50”
70”
2250˚ F
1250˚ F
27
2500
AE1836D
18” 36” 18”
18” 31” 18”
36” 62”
70”
2250˚ F
1250˚ F
36
3200
AE1848D
18” 48” 18”
18” 43” 18”
36” 74”
70”
2250˚ F
1250˚ F
41
4000
10
OVERALL SIZE
W
L
H
MAXIMUM
TEMPERATURE
UPPER
CHAMBER
MAXIMUM
TEMPERATURE
LOWER
KW
CHAMBER
INPUT
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
WEIGHT
LBS
Models C30FH and C36FH
USES: These large capacity furnaces can be used for
various types of heat treatment processes which require
temperatures up to 2100 ºF continuos temperature or
2250 °F intermittent.
CONTROLS: These furnaces come standard with a
digital programmable main control and a digital high
limit safety control. Solid state power switching to the
heating elements, and dual door limit safety switches
that interrupt power to the elements when the door is
opened. All wiring is complete and ready to be connected
to your power source. Input controls allow operator to
adjust temperatures of various zones so that uniform
temperatures can be had throughout the chamber.
ELEMENTS: High temperature alloy wire elements are
mounted in grooves on the walls and door, this provides
all around heating and close gradients throughout the furnace
chamber.
GENERAL CONSTRUCTION: Furnace frame is
constructed of 2½” x 2½” x 3/16” angle steel with 18 gauge
sheet steel panels. The door is mounted on heavy hinges on
the side and secured in the closed position with a heavy duty
latch. A Kaowool® rope seal is installed on the door where it
meets the chamber. The exterior is finished in a hammertone
gray enamel. Walls are constructed of 4½” of insulating brick
backed up by 2” of 1800 °F block insulation.
The 24” x 24” x 30” chamber in the C30FHWC gives you
10 cubic ft. of space, and the 24” x 24” x 36” chamber in the
C36FH gives you 12 cubic ft. of space.
Standard 240 VAC, 3 Phase . 208 or 480 VAC optional. Also
available with an optional vertical rising door.
OPTIONS:
Vertical opening door.
Stainless steel port option for protective inert
atmosphere operation is available.
Draw units available with an optional
2000˚ F Maximum temperature fan
Quench tanks are available for an additional cost
Audible process alarm
SPECIFICATIONS
MODEL
CHAMBER SIZE
W
L
H
OVERALL SIZE
W
L
H
MAXIMUM INTERMITTENT
TEMPERATURE
MAXIMUM CONTINUOUS
KW
TEMPERATURE
INPUT
WEIGHT
LBS
C30FH
24” 24” 30”
52”
40” 67”
2250˚ F
2000˚ F
14
1400
C36FH
24” 24” 36”
52”
40 ” 73”
2250˚ F
2000˚ F
14
1600
C30FHDW
24” 24” 30”
24”
24” 30”
1250˚ F
1050˚ F
14
1400
C36FHDW
24” 24” 36”
24”
24” 30”
1250˚ F
1050˚ F
14
1600
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
11
Models C336 and C444
USES: These large capacity furnaces can be used for various
types of heat treatment processes which require temperatures
from 200 ºF to 1950 ºF. The 6 bladed axial flow fan mounted
in the roof circulates the air within the chamber resulting in
close gradients throughout. OPTION: 2250 ºF rating using a
4 zone control package.
CONTROLS: These furnaces come standard with a digital
programmable main control and a digital high limit safety
control. Solid state power switching to the heating elements,
and dual door limit safety switches that interrupt power to the
elements when the door is opened. All wiring is complete and
ready to be connected to your power source
ELEMENTS: Heavy chrome-nickel wire elements are coiled
and mounted in grooves in walls and door to provide all
around heating which also helps produce close gradients
throughout the chamber.
GENERAL CONSTRUCTION: Furnace frame is
constructed of heavy steel angle with 18 gauge sheet metal
panels to form exterior case. Case is finished in a pleasing
gray hammertone. The vertical rising door is mounted on
heavy levers and is opened by lifting up on a wide handle. The
counterweight holds the door up in the raised position and
the weight of the door gives a good brick seal in the lowered
position. A Kaowool® rope seal is installed on the door where
it meets the chamber. This door protects the operator from
burns because the hot surface always faces away from him.
Door opens manually very smoothly and easily. All walls and
door are constructed of 4½” of the finest quality insulating
brick backed up by 1½” of block insulation. The roof is arched
giving added strength and providing space for fan. This
combination of insulation and wall thickness helps to give fast
heat up and excellent retention for economical operation.
OPTIONS:
C444, shown with
optional embedded heating
elements in plates.
480 Volt, 3 Phase.
2250 ºF Maximum Temperature Option.
Optional Heating Coils In Plate.
Optional Embedding Of Heating Coils In Plate
Optional Temperature Recorders Are Available
Audible Process Alarm
SPECIFICATIONS
MODEL
CHAMBER
SIZE
W
L
H
OVERALL SIZE
W
L
H
C336
36” 36” 36”
52”
65”
C444
48” 48” 48”
64”
77”
12
MAXIMUM INTERMITTENT
TEMPERATURE
MAXIMUM
CONTINUOUS
TEMPERATURE
KW
INPUT
WEIGHT/LBS
78”
1950˚ F
1750˚ F
27
2400
90”
1950˚ F
1750˚ F
72
3000
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
Glass and Quartz Annealing Furnaces
USES: These furnaces are designed primarily
for annealing glass, and use as a bake out
oven. However, it can be used for any purpose
requiring controlled temperatures of up
to 2250 ºF. When inquiring, please state
temperature desired.
CONTROLS: These furnaces come standard
with a digital programmable main control
and a digital high limit safety control. Solid
state power switching to the heating elements,
and dual door limit safety switches that
interrupt power to the elements when the
door is opened.
ELEMENTS: High temperature alloy wire
elements are mounted in grooves in the brick
walls. The design of the heating coils provides
all around heating and close gradients
throughout the furnace chamber.
GENERAL CONSTRUCTION: Heavy angle
steel frame with 18 gauge sheet metal panels
form the case. The walls are constructed of
4.5” of the finest quality insulated firebrick
backed up by 1800 ºF block insulation.
Counterweight lid opens easily. The lid is
insulated with ceramic fiber or brick. This
combination of insulation and wall thickness
helps to give fast heat up and excellent heat
retention for economical operation.
MODEL
CHAMBER SIZE
W L H
OPTIONS:
480 volt 3 phase power.
Audible process alarm.
Data communications package.
SPECIFICATIONS G SERIES FURNACES
OVERALL SIZE
W L H
MAXIMUM INTERMITTENT
TEMPERATURE
MAXIMUM CONTINUOUS
TEMPERATURE
KW
INPUT
WEIGHT
LBS
G4H
12” 12” 48”
71” 34”
75”
2250˚ F
2100˚ F
15
790
G5H
12” 12” 60”
71” 34”
87”
2250˚ F
2100˚ F
18
990
G6H
12” 18” 48”
70” 40”
75”
2250˚ F
2100˚ F
18
1185
G7H
18” 18” 36”
80” 40”
63”
2250˚ F
2100˚ F
16
1035
G8H
12” 12” 96”
71” 34” 123”
2250˚ F
2100˚ F
20
1685
G9H
18” 18” 48”
80” 40”
75”
2250˚ F
2100˚ F
20
1150
G11H
18” 18” 60”
80” 40”
87”
2250˚ F
2100˚ F
14
1200
G18H
18” 18” 96”
80” 40” 123”
2250˚ F
2100˚ F
30
1600
G22H
18” 18” 120 ”
80” 40” 147”
2250˚ F
2100˚ F
34
2200
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
13
Aluminum Drop Bottom
USES: These bottom opening quick quench
furnaces, are designed for aluminum heat
treatment to a maximum temperature of 1200 ºF.
Temperature gradients are ± 5 ºF or less.
CONTROLS: These furnaces come standard with
a Model SD, digital LED readout microprocessor
programmable control mounted in a separate free
standing control cabinet. There is an independent
digital high limit safety control and independent
contactor and dual door limit safety switches that
interrupt power to the elements and fan when the
door is opened.
ELEMENTS: Elements are heavy gage chromeNickel mounted in grooves on all four sidewalls of
the furnace behind the stainless steel baffle.
The design of the heating coils provides all around
heating and close gradients throughout the
furnace chamber.
GENERAL CONSTRUCTION: Heavy angle steel
frame with 18 gauge sheet metal panels form the
case. The walls are constructed of 4.5” of the finest
quality insulated firebrick backed up by 1800 ºF
block insulation. This combination of insulation
and wall thickness helps to give fast heat up and
excellent heat retention for economical operation.
The furnace door can be opened and the load rack
lowered into the quench tank within six seconds.
The door rolls easily on casters mounted on an
inclined track. Air assist is used to raise and
lower loads up to 1000 lbs. easily. The uniform
temperature is accomplished by a 15” stainless
steel fan mounted in the roof, which circulates air
down the sidewalls and up through the load. A
full stainless steel baffle within the furnace directs
airflow. The insulated quench tank is mounted on
V groove casters with a track so it can be rolled
back out of the way.
OPTIONS:
Quench tank heater and circulation pump system
Stainless steel load basket
480 volts 3 phase power
Audible process alarm
Data communications package
SPECIFICATIONS
CHAMBER SIZE
W
L
H
OVERALL SIZE
W
L
H
MAXIMUM INTERMITTENT
TEMPERATURE
R24S
36” 36” 21”
57.5” 112” 158”
1200˚ F
1000˚ F
30
2400
R36S
36” 36” 36”
57.5” 112” 158”
1200˚ F
1000˚ F
45
3000
MODEL
14
MAXIMUM
CONTINUOUS
KW
TEMPERATURE INPUT
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493
WEIGHT/LBS
USES: These bottom opening furnaces, are designed for heat
treatment at temperatures up to 2250 ºF.
Temperature gradients are ± 5 ºF or better.
CONTROLS: These furnaces come standard with an easy to
use digital programmable 4 zone system and a high limit backup
system. Mounted in a separate free standing control cabinet.
Dual safety switches that interrupt the power to the heating
coils when the unit is raised.
ELEMENTS: Special PM elements for long life at low and high
temperatures. Elements are heavy gage, mounted in grooves
in all sidewalls of the furnace. The design of the heating coils
provides all around heating and close gradients throughout the
furnace chamber.
GENERAL CONSTRUCTION: Heavy angle steel frame holds
the body of the furnace, the walls are constructed of 3” of the finest
quality insulated firebrick. The furnace is bottom opening by means
of a counterweight which lifts the entire furnace vertically above the
base of the frame. A kaowool rope seal is installed in the bottom..
Close temperature uniformity tolerances are maintained during
dynamic heat up, as well as top temperature soaks using matched
thermocouples and four zone control.
Options:
Stainless steel ports • 480 volts 3 phase power
Audible process alarm
Data communications package
2400°F Optional
SPECIFICATIONS
CHAMBER SIZE
OVERALL SIZE
MAX. INTERMITTENT
TEMPERATURE
BT29
29” H X 23 3/8”
DECAGON
48” W, 50” L, 83” H
2250˚ F
2000˚ F
13.5
BT28
29” H, 28”
DODECAGON
54” W, 57” L, 83” H
2250˚ F
2000˚ F
16.3
MODEL
MAX. CONTINUOUS
KW
TEMPERATURE
INPUT
Call Us 800-862-7377 • 775-884-2777 • Fax 775-884-2991 • Visit our website www.cressmfg.com or e-mail us at [email protected]
15
Accessories
STANDS FOR BENCH TOP FURNACES
Available for:
C133, C136, C1228, C122012, C1232, C1240, C1250,
For other models please ask us
QUENCH TANKS:
W
17
17
L
17
34
H
17
17.
REFERENCE BOOK.
Heat Treatment, Selection and
Application of Tool Steels
By William E. Bryson.
TONGS:
45° 31.5” long and 37° are 39.25” long.
TOOL WRAP STATION.
Foil wrap 24” width - 50 ft rolls 2000 °F
Foil wrap 24” width - 100 ft roll 2000 °F
Foil wrap 24” width - 50 ft roll high temperature 2240 °F
16
Cress Manufacturing Company Inc. • 4736 Convair Drive • Carson City, Nevada 89706-0493