Precision Solutions Brings Their Heat Treating In-House
An oven from Lucifer Furnaces has been installed to heat a variety of tool steels used during production.
Posted: December 13, 2014
Lucifer Furnaces, Inc. (Warrington, PA), a manufacturer of heat treating furnaces and industrial ovens, delivered a Red Devil Series furnace to Precision Solutions, Inc. (Richmond, UT), a machine shop specializing in custom tooling. Shop manager Bob Jones chose this furnace to bring his heat treating in-house to save time and costs when heating a variety of tool steels that are used during production.
The Model RD8-KHE24 he selected is a space saving dual chamber unit with working dimensions of 12 in H by 14 in W by 24 in L in both upper and lower chambers. The upper hardening chamber reaches 2,200 deg F while the lower tempering oven heats to 1,200 deg F. Both chambers are lined with a multilayered 4.5 in combination of lightweight firebrick hotface insulation and mineral wool backup insulation for energy efficient operation.
The firebrick is precision dry fit inside the chamber with staggered seams for reduced heat loss while allowing for thermal expansion. All refractory can be easily replaced through the front opening of the chamber. Both chambers contain heating elements composed of coiled heavy gauge wire of low watt density mounted in easy-to-replace side wall panels.
The lower chamber has a rear mounted fan for uniform circulation of heat. Hearth plates in both chambers support the work load and protect floor brick. Chambers are controlled separately by Honeywell digital time proportioning controllers; an optional over temperature safe-ty system is installed on the upper chamber.
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