Amarillo College Installs Dual-Chamber Furnace
Amarillo College, in the Texas panhandle, has installed a Lucifer Furnaces Model HS84 Dual Chamber Furnace in its Manufacturing Technologies Department. The furnace has two 12 x 12 x 24in chambers mounted in a space-saving arrangement. The upper hardening chamber heats to 2,450F, while the lower tempering chamber reaches 1,400F. With a heavy gauge sheet-steel-reinforced shell and numerous safety features, this rugged unit is suited for the needs of an educational facility.
The upper chamber is insulated with 6 1/2in of dry fit lightweight ceramic fiber and mineral wool block for energy efficiency, and heated with silicon carbide elements mounted across the roof and below the hearth. An SCR power supply provides a steady low amperage and voltage supply to the elements for longer life. A double-pivot horizontal swing door keeps the hot face away from the user at all times. The lower chamber is lined with insulating firebrick, mineral wool backup and a stainless-steel liner, and heated with coiled heating elements in easy-to-replace holders mounted along the side walls.
A high-volume rear-mounted fan recirculates heat for uniform temperature. A Honeywell digital time-proportioning temperature controller is mounted in a separate cabinet on the side.
The upper chamber is insulated with 6 1/2in of dry fit lightweight ceramic fiber and mineral wool block for energy efficiency, and heated with silicon carbide elements mounted across the roof and below the hearth. An SCR power supply provides a steady low amperage and voltage supply to the elements for longer life. A double-pivot horizontal swing door keeps the hot face away from the user at all times. The lower chamber is lined with insulating firebrick, mineral wool backup and a stainless-steel liner, and heated with coiled heating elements in easy-to-replace holders mounted along the side walls.
A high-volume rear-mounted fan recirculates heat for uniform temperature. A Honeywell digital time-proportioning temperature controller is mounted in a separate cabinet on the side.
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