SAKAV standard 7500C tempering furnaces are used for a variety of heat-treating applications including those requiring inert atmospheres. Recirculating blower provides high velocity vertical down airflow for excellent heat transfer from 4250C to 7500C. Precision microprocessor based temperature controls and energy-saving insulation maximize the performance of these rugged units.
- Digital, microprocessor based, thermocouple actuated, indicating temperature controller
- Modulating burner on gas furnaces.
- Motor control push buttons and on-off heat switch
- Easy-to-see pilot lights
Model |
Work Space Dimensions (W x D x H) |
Out Side Dimensions (W x D x H) |
Height W/Door Open |
Blower |
Door open |
Heat input |
Operating Characteristics |
|||||
CFM |
HP |
KW |
BTU/HR |
Control Accuracy |
Furnace Uniformity |
Rise Time |
||||||
Electric |
Gas |
|||||||||||
TF-183618 |
18" x 36" x 18" |
35" x 87" x 74" |
78" |
2400 |
3 |
Electric |
28 |
190,000 |
+0.3% |
+60C |
95 min |
85 min |
TF-243624 |
24" x 36" x 24" |
47" x 92" x 80" |
90" |
3500 |
5 |
Electric |
42 |
285,000 |
+0.3% |
+70C |
90 min |
80 min |
TF-304830 |
30" x 48" x 30" |
53" x 106" x 86" |
102" |
4250 |
5 |
Electric |
52 |
355,000 |
+0.3% |
+140C |
90 min |
80 min |
TF-364836 |
36" x 48" x 36" |
59" x 111" x 126" |
126" |
5300 |
5 |
Air |
65 |
450,000 |
+0.3% |
+100C |
85 min |
75 min |
TF-366036 |
36" x 60" x 36" |
59" x 121" x 126" |
126" |
6000 |
7½ |
Air |
74 |
510,000 |
+0.3% |
+100C |
85 min |
75 min |
TF-484848 |
48" x 48 “x 48" |
71" x 114" x 150" |
150" |
8000 |
10 |
Air |
100 |
660,000 |
+0.3% |
+120C |
70 min |
65 min |
TF-487248 |
48" x 72" x 48" |
71" x 152" x 150" |
150" |
9600 |
15 |
Air |
120 |
800,000 |
+0.3% |
+120C |
75 min |
70 min |
- 230 Volts, 3-phase, 50 Hz
- Other electrical characteristics available Wall insulation, 7" thick, consisting of
- 1" of 12500C, 8 lbs. / cf. ceramic fiber blanket
- 2" of 9250C 4 lbs. / cf. ceramic fiber blanket
- 2" of 10500C 15 lbs. / cf. block insulation
- 2" of 6500C, rockwool insulation
- 4 ½ of 12500C insulating firebrick
- 2" of 6500 C 18 ½ lbs./cf. block insulation
Safety devices as listed on the front of this bulletin, Heating element contactors electrically interlocked with door to shut off power to beaters as door opens and restore power when closed. High temperature alloy coiled wire-heating element supported in alloy rack, Heating elements located in heat chamber upstream of the recalculating blower. Exhaust outlet 4'" diameter.
Gas Models
- 1,000 BTU natural gas at 2 psig pressure; 1" NP inlet up to 800,000 BTU/HR
- Other gas characteristics available.
Safety devices ass listed on the front of this bulletin. Automatic preignition purge period and push button electric ignition contributes to ease of operation. Modulating gas burner fires into chamber upstream of the recalculating blower. Gas burner protected with electronic flame safety relay. Door interlock switch drives main burner to low fire when door is opened and restores control when door is closed. Exhaust outlet 6" diameter.
Furnace shell is made of 3/16" thick steel plate reinforced with structural steel. Doorsill constructed from firebrick to protect furnace during loading. Stainless steel grid at bottom of workspace to distribute loading. Soft insulation on door provides an excellent heat seal by pressing against the vestibule refractory and ½ " thick steel front plate. Exterior painted with Trilite Green enamel, each features completely wired side access control panel assembled on the furnace enclosing terminals for incoming power, temperature controllers, push buttons and pilot lights.
Door pivots upward above furnace, clearing front for easy loading. In the closed position, full door weight seats door firmly against furnace face. Structural steel pivot arms are supported at furnace sidewalls by bearings and connected to a heavy-duty electro-mechanical actuator. The door is controlled by a switch at the furnace control panel.
Door rises vertically in front of the furnace hanging from heavy-duty roller chain, sprockets, shaft and pillow block bearings. In the closed position, rollers at the sides of the door engage support brackets to force the full door weight against the furnace face. Large diameter air cylinder rotates support shaft to lift the door. A manual air valve controls the door with supply filter, lubricator and regulator.
