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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.
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
Preheating
Solution
Treating
Stress
Relieving
Tempering
Aging
Annealing
tempering
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