Thermcraft Box Furnaces and Heat Treating Ovens
Thermcraft box furnaces are available in a wide variety of configurations and temperature ranges. The box furnace is ruggedly simple and conservative in design, which makes this type of furnace very versatile and trouble-free. These units are built with a heavy gage steel shell and low watt density heating elements along with lightweight ceramic fiber insulation making these furnaces and ovens suitable for any laboratory or industrial application.
Box furnaces are available in many configurations that include single zone or multiple zone heated chambers and temperature ranges up to 1010°C, 1204°C, 1538°C, or 1700°C (1850°F, 2200°F, 2800°F, or 3092°F). Options include pneumatic door openers, view ports, sealed chamber with ports for atmosphere control, heated doors, quench tanks, automation, standard controls and PLC controls, just to mention a few. If you can imagine it, Thermcraft can build it. Below are some examples of different types of box furnaces that we manufacture.
Dual Chamber Tool Room Furnace - SERIES 2BHS/A
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The Dual Chamber Tool Room Furnace displayed here has a temperature capability of 1260°C (2300°F) in the upper chamber and 677°C (1250°F) in the lower chamber. Shown with optional roll-out quench tank, roller hearth and pneumatic door opener.
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Bench Top Box Furnaces
 | This Bench Top Box Furnace has a double pivoting hinged door that keeps the high temperature interior face of the door away from the operator for safety. This type of bench top box furnace is typically designed for industrial use, but can be used in an R&D or laboratory environment as well. |
 | This Bench Top Box Furnace with control system is designed for laboratory and industrial use. This type of box furnace reaches temperatures of 1204°C (2200°F).
Click Here for the SERIES BHAF General Purpose Box Furnaces Sheet |
High Temperature Box Furnace
 | The High Temperature Box Furnace pictured here uses silicon carbide heating elements for operating temperatures up to 1538°C (2800°F). The pneumatically operated door allows for easy opening and closing and transformer tap switches allow for voltage to be adjusted as element resistance changes. This type of box furnace is ideal for industrial use. |
Hardening Furnace
 | The Hardening Furnace shown here has a separate drawing furnace that is combined in one unit. The furnace comes with control systems for each furnace chamber. Quench tank storage can be seen at the bottom of the unit. Temperatures of up to 1232°C (2250°F) and 649°C (1200°F) in the two chambers can be reached with this hardening furnace. |
Heat Treating Furnace - SERIES BHSF
 | This Controlled Atmosphere Heat Treating Furnace has 760°C - 1370°C (1400°F - 2500°F) temperature capability. This box furnace boasts an automatic flame curtain and can handle endothermic, exothermic and enriched atmospheres as well as nitrogen, argon or air.
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Muffle Type Box Furnace
 | This Muffle Type Box Furnace has a muffle (or retort) designed for sealed atmosphere operation at high temperatures up to 1100°C (2012°F). The muffle (or retort) is mounted on a cart to allow easy conversion to a standard box furnace. |
Other Box Furnaces
 | The Vertical Lift Door Box Furnace shown here is more simplistic, with a manually operated vertical lift door in front. The programmable temperature control console allows for simple setting of the furnace temperature. |
 | This Front Loading Box Furnace has a pneumatically operated vertical lift door for easy access to the chamber. The foot pedal opens and closes the door of the furnace. |
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