Hot zone employing graphite heating elements

Details Hot zone employing graphite heating elements Hot zone employing graphite heating elements

1988-10-05

1989-08-22

Envall, Jr., Roy N.

Industrial electric heating furnaces

Resistance furnace device

With internal atmosphere control

H05B 308

Patent

active

048603066

ABSTRACT:
The present arrangement includes a plurality of graphite support assemblies which serve to hold graphite heating elements of a graphite hot zone to be used with a vacuum furnace. Each of the support assemblies is designed to employ graphite bolts. Laminated graphite washers are located between the bolts and the graphite heating elements and between the graphite heating elements and the support assemblies so that the bolts do not loosen in response to cycles of hot and cold temperatures.

REFERENCES:
patent: 4259538 (1981-03-01), Jones
patent: 4425660 (1984-01-01), Jones
patent: 4429403 (1984-01-01), Hooper

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