Heat treating furnace with graphite heating elements

Details Heat treating furnace with graphite heating elements Heat treating furnace with graphite heating elements

1984-09-14

1985-12-17

Envall, Jr., Roy N.

Industrial electric heating furnaces

Resistance furnace device

With heating element detail

373134, 338295, 338289, H05B 306

Patent

active

045596310

ABSTRACT:
A heat treating furnace having a work chamber of circular cross-section and having banks of electric resistance heating elements formed by rigid and elongated graphite bars. The graphite bars of each bank are interconnected so as to form an octagon located closely adjacent the circular wall of the work chamber and closely approximating the circular shape of the chamber. As a result of the octagonal arrangement, ring-like banks of rigid graphite elements may be space longitudinally along the circular work chamber to enable front-to-rear temperature trim zones to be established in the chamber.

REFERENCES:
patent: 4117252 (1978-09-01), McMaster
patent: 4126757 (1978-11-01), Smith, Jr. et al.
patent: 4246434 (1981-01-01), Gunther et al.
patent: 4247734 (1981-01-01), Gunther et al.
patent: 4249032 (1981-02-01), Smith, Jr. et al.
patent: 4347431 (1982-08-01), Pearce et al.
patent: 4435819 (1984-03-01), Plume
Ipsen Industries Drawing No. C-126677 dated 5/5/78; No. D-14832 dated 9/18/82; and No. D-148178 dated 9/22/82.

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