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Tempering
Bench Furnace

BULLETIN
BF-730

COMPANION ELECTRIC
TEMPERING FURNACE
AND QUENCH TANK


 

Electric Tempering Furnace can be combined with electric Bench Furnaces or Inert Atmosphere Bench Furnaces to produce a space-saving, over-and-under, heat treating and tempering furnace combination. The top chamber with its manually operated vertical lift door can be selected from among four sizes of 2000°F and 2200°F Bench Furnaces described on Bulletin BF-710 or Inert Atmosphere Bench Furnaces described on Bulletin BF-720. The Quench Tank is a free standing unit available with electric heat.

STANDARD FEATURES Back to Top
Controls
—Digital, microprocessor based, thermocouple actuated, indicating
   temperature controller
—On-off heat switch
—LED pilot lights



Safety Equipment — Electric Furnace
—Adjustable, thermocouple actuated, manual reset excess temperature
    interlock
—Separate heating element control contactor
—Door interlock switch turns off power to heating elements when door is
   opened; restores power when door is closed



Construction
—Recirculating blower located in back wall
—Heavy gauge aluminized steel cabinet with enamel finish
—Brushed stainless steel control panel face
—Designed to support heat treating furnace
—Well insulated, side-hinged door
—High temperature alloy heating elements supported by rugged ceramic plates
—Energy-saving lightweight ceramic fiber insulation reduces operating costs
—Fast heat-up
—Heating elements located on sidewall and roof for excellent temperature uniformity throughout work space
—Ceramic hearth tray
—1 year limited warranty


Optional Quench Tank
—Expanded metal loading basket
—Use with water, oil or synthetic solutions
—1/2 HP direct driven mixer
—Rugged subway grate basket support
—Optional electric heater with temperature controller


All equipment fully assembled and individually factory tested

 

   
SPECIFICATI ONS Back to Top
NOT FOR USE WITH FLAMMABLE SOLVENTS, VAPORS OR GASES
Model
Work Space
Outside
Dimensions*
(WxDxH)
Max
Temp
Insu-
lation
Height
w/Door
Open
Heat Input
KW
Operating Characteristics†
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
230V
460V
Control
Accuracy
Oven
Uniformity
Rise Time
230V
460V
BT-122012 12" x 20" x 12" 1.67 38" x 40" x 38" 1250°F 5" 38" 15 20 ±0.3% ±25°F 23 min 16 min 900 lbs
Model BT-122012 TEMPERING FURNACE ASSEMBLED WITH BENCH FURNACE FROM BULLETIN BF-710 LISTED BELOW
BF-12128 12" x 12" x 8" 0.67 38" x 40" x 62" 2000°F 5" 83" 6 8 ± 0.3% ±15°F 55 min 45 min 1300 lbs
BF-12128-HT 12" x 12" x 8" 0.67 40" x 40" x 64" 2200°F 6" 85" 6 8 ± 0.3% ±20°F 80 min 60 min 1340 lbs
BF-121212 12" x 12" x 12" 1.0 38" x 40" x 68" 2000°F 5" 97" 7.5 10 ± 0.3% ±12°F 50 min 40 min 1350 lbs
BF-121212-HT 12" x 12" x 12" 1.0 40" x 40" x 70" 2200°F 6" 99" 7.5 10 ± 0.3% ±17°F 65 min 50 min 1400 lbs
BF-12188 12" x 18" x 8" 1.0 38" x 40" x 62" 2000°F 5" 83" 7.5 10 ± 0.3% ±10°F 65 min 50 min 1425 lbs
BF-12188-HT 12" x 18" x 8" 1.0 40" x 40" x 64" 2200°F 6" 85" 7.5 10 ± 0.3% ±15°F 75 min 55 min 1525 lbs
BF-121812 12" x 18" x 12" 1.5 38" x 40" x 68" 2000°F 5" 97" 12 16 ± 0.3% ±10°F 45 min 35 min 1450 lbs
BF-121812-HT 12" x 18" x 12" 1.5 40" x 40" x 70" 2200°F 6" 99" 12 16 ± 0.3% ±15°F 60 min 45 min 1550 lbs
BF-12248 12" x 24" x 8" 1.33 38" x 40" x 62" 2000°F 5" 83" 12 16 ± 0.3% ±10°F 50 min 40 min 1475 lbs
BF-12248-HT 12" x 24" x 8" 1.33 40" x 40" x 64" 2200°F 6" 85" 12 16 ± 0.3% ±15°F 60 min 45 min 1530 lbs
BF-122412 12" x 24" x 12" 2.0 38" x 40" x 68" 2000°F 5" 97" 15 20 ± 0.3% ±10°F 45 min 35 min 1550 lbs
BF-122412-HT 12" x 24" x 12" 2.0 40" x 40" x 70" 2200°F 6" 99" 15 20 ± 0.3% ±15°F 60 min 45 min 1610 lbs
Model BT-122012 TEMPERING FURNACE ASSEMBLED WITH INERT ATMOSPHERE BENCH FURNACE FROM BULLETIN BF-720 LISTED BELOW
BAF-12128 12" x 12" x 8" 0.67 38" x 40" x 62" 2000°F 5" 83" 6 8 ± 0.3% ±15°F 55 min 45 min 470 lbs
BAF-12128-HT 12" x 12" x 8" 0.67 40" x 40" x 64" 2200°F 6" 85" 6 8 ± 0.3% ±20°F 80 min 60 min 1410 lbs
BAF-121212 12" x 12" x 12" 1.0 38" x 40" x 68" 2000°F 5" 97" 7.5 10 ± 0.3% ±12°F 50 min 40 min 1420 lbs
BAF-121212-HT 12" x 12" x 12" 1.0 40" x 40" x 70" 2200°F 6" 99" 7.5 10 ± 0.3% ±17°F 65 min 50 min 1470 lbs
BAF-12188 12" x 18" x 8" 1.0 38" x 40" x 62" 2000°F 5" 83" 7.5 10 ± 0.3% ±10°F 65 min 50 min 1445 lbs
BAF-12188-HT 12" x 18" x 8" 1.0 40" x 40" x 64" 2200°F 6" 85" 7.5 10 ± 0.3% ±15°F 75 min 55 min 1545 lbs
BAF-121812 12" x 18" x 12" 1.5 38" x 40" x 68" 2000°F 5" 97" 12 16 ± 0.3% ±10°F 45 min 35 min 1470 lbs
BAF-121812-HT 12" x 18" x 12" 1.5 40" x 40" x 70" 2200°F 6" 99" 12 16 ± 0.3% ±15°F 60 min 45 min 1575 lbs
BAF-12248 12" x 24" x 8" 1.33 38" x 40" x 62" 2000°F 5" 83" 12 16 ± 0.3% ±10°F 50 min 40 min 1580 lbs
BAF-12248-HT 12" x 24" x 8" 1.33 40" x 40" x 64" 2200°F 6" 85" 12 16 ± 0.3% ±15°F 60 min 45 min 1625 lbs
BAF-122412 12" x 24" x 12" 2.0 38" x 40" x 68" 2000°F 5" 97" 15 20 ± 0.3% ±10°F 45 min 35 min 1675 lbs
BAF-122412-HT 12" x 24" x 12" 2.0 40" x 40" x 70" 2200°F 6" 99" 15 20 ± 0.3% ±15°F 60 min 45 min 1725 lbs
*BT-122012 depth includes 14" motor mount overhang at rear.
Assembled dimensions include 10" control panel overhang at right
and BT-122012 motor mount overhang at rear
  †Accuracy as percent of controller span. Uniformity at 100°F below maximum temperature. Rise Time in minutes to 100°F below maximum temperature. Tests run with empty oven and minimum exhaust. Performance will vary with load, exhaust rate and application. See Bulletin TC-920 for additional details.
STANDARD EQUIPMENT   Back to Top
All Models
— 208 volts, 3-phase, 60 Hz
— 230 volts, 3-phase, 60 Hz
— 460 volts, 3-phase, 60 Hz
— Other electrical characteristics available

Each Tempering Furnace features completely wired control panel, enclosing terminals for incoming power, temperature controller, heating element control contactor, excess temperature controller, separate contactor interlocked with excess temperature controller, 115 volt control circuit transformer, on-off heat switch and red pilot light. Door interlock switch turns off power to heating elements and blower when door is opened. High temperature enamel painted aluminized steel exterior. Ceramic hearth tray rated for 60 lbs distributed loading. Stainless steel recirculating blower driven through V-belt drive by 1/2-HP motor.



Circulation Diagram
(Side View)


 
ADDITIONAL EQUIPMENT AVAILABLE Back to Top

See Bulletin TC-960 for modifications and other optional equipment.

Programmable Temperature Controller, microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller
Option PTC


Recording Thermometer, thermocouple actuated, 24-hour, 10" diameter circular chart, used in conjunction with standard controller, includes floor stand to house recorder. Floor stand cannot be used for storage
Option RT


Digital Timing Temperature Controller, microprocessor based, digital indicating, incorperates 99 hour 59 minute timer. Starts timing when temperature reaches set point and shuts down oven at end of set time
Option DTS3

Digital Shut Down Timer, with continuous "hold" feature
Option SDT


Digital Batch Timer, for uniformly timing batch operations. Continuous alarm with door interlock; alarm at end of preset time period until door is opened or timer reset
Option BT


Alloy Hearth Tray
11" x 11"
   Option AH1212
11" x 17"
   Option AH1218
11" x 20"
   Option AH1220
11" x 23"
   Option AH1224







Quench Tank, carbon steel, 40 gallon capacity, 12" x 20" x 12" deep work basket, subway grating basket support, 1/2 HP direct driven mixer, 23 x 23 x 44 high overall, for 115 or 230/1/60
Option QT

Quench Tank Electric Heater, with temperature control
Option QTH

 
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