Box furnace are most sought after furnace because of their uniform heating and other features. They are available in either electric powered or gas-fired models. They are highly productive because they heat the work load capacity rapidly thereby minimizing, the cycle time. Box heating furnace can also be used to handle very heavy, dense loads which results in the maximizing of the output in a very compact, efficient package. Through the unique recirculating convection heating system the work is brought rapidly to temperature thereby forcing pressurized air through the load at high velocity. Since the fan and heater are separate from the load chamber, loading the furnace is foolproof.

Features
Following are the features of the box furnace:

• The furnace consist of separate work / heat chambers.
  
  
• Work chamber is lined with metals having ceramic insulation.
  
  
• There is a high velocity re-circulating fan.
  
  
• Heat can be controlled easily through the use of various devices like digital microprocessor based, thermocouple actuated, indicating temperature controller and the modulating modulating burner on gas furnaces.
  
  
• When door is opened, door interlock switch turns off power to heating elements and restores power when door is closed.
  
  
• The furnace consist of various other safety equipments like adjustable, thermocouple actuated, manual reset excess temperature controller, combustion air blower with air flow safety switch, high gas pressure switch.

Advantages

• Uniform temperature distribution
• Insulation system makes the furnace very productive
• Easy to use and installation
• Cost of maintenance is low

Applications

• Baking
• Preheating
• Solution Treating
• Stress Relieving
• Tempering
• Aging
• Annealing
• Austempering