Heat treating furnace with removable floor, adjustable heating e

Details Heat treating furnace with removable floor, adjustable heating e Heat treating furnace with removable floor, adjustable heating e

1993-02-26

1996-03-26

Jeffery, John A.

Industrial electric heating furnaces

Resistance furnace device

With heating element detail

373109, 373113, 432 77, 432206, 432207, 239597, 239600, F27B 502, F27B 516

Patent

active

055027423

ABSTRACT:
A heat treating furnace has a hot zone enclosure with a substantially rectangular cross section. The floor of the hot zone enclosure is formed such that it is removable independently of the remainder of the hot zone enclosure. The heat treating furnace has a heating element with a novel support element that is readily mounted on and removed from the hot zone enclosure and which adjusts to accommodate a wide range of heating element thicknesses and insulation shield thicknesses. The electrically insulating components of the support element are formed to resist electrical shorting resulting from metallization and to resist cracking from thermally induced stress. The heat treating furnace further includes a cooling gas injection nozzle formed to reduce turbulence in the injected gas stream and to be readily attached to or removed from the hot zone enclosure. The gas injection nozzle is preferably formed of a ceramic material and is mounted in an opening in the hot zone enclosure by a very coarse, light-bulb-like, thread formed in the body of the gas nozzle.

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Drawing Entitled "Hot Zone Assembly" (Dwg. No. D-25354), Abar Corp.

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