Lucifer Furnaces delivered a large dual chamber
unit to a metal stamping manufacturer in the Midwest. Model HL82-P24 is a hardening furnace over
tempering oven, built as a space saving combination for multipurpose heat
treating. The upper hardening chamber
heats to 2300°F with 6.5” multilayer insulation throughout the chamber. Heat is supplied through heavy gauge, coil
wound wire elements in easy-to-replace holders on sides, back and door of the
furnace. The vertical lift, hand-crank
operated door provides for smooth operation with a tight seal. A heavy duty ceramic hearth plate protects
floor elements and insulation. The lower
chamber tempering oven heats to a uniform 1200°F with a rear mounted high cfm fan
circulating air past the side mounted heating elements. A 16 gauge stainless steel liner forms the
work chamber. Both chambers are
controlled with digital time proportioning temperature controllers with timers
and alarms. Safety features on this unit
include high limit controllers on each chamber which provide auto shut-down in
the event of a high temp excursion. Door
switches are designed to shut off power and fan, protecting users from electric
shock as well as heat hazards. Both chambers are 18” high x 24” wide x 24”
long.
