Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1988-03-30
1989-07-11
Yuen, Henry C.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
432163, 432 77, 432 85, 432 8, F27B 902, F27D 1502
Patent
active
048467170
ABSTRACT:
Continuous thermal treatment for the strengthening of metallic workpieces is carried out by placing a batch of at least two workpieces on a basket hinged on a continuously advancing conveyor chain; introducing said workpieces in said basket through a first instantaneously opening and closing gate into a uniformly heated first thermal treating step wherein the continuously advancing workpieces are heated at a temperature of about 560.degree. C.; introducing the heated workpieces in said basket through a second instantaneously opening and closing gate into a second thermal treatment step placed immediately after the end of the first step and in communication therewith, by lifting a vat containing a cooling fluid to immerse said workpieces in said basket into the cooling fluid of said vat to rapidly cooling said workpieces to a temperature of about 100.degree. C. and thereafter lowering said vat.
REFERENCES:
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patent: 3850318 (1974-11-01), Wentworth
patent: 3982887 (1976-09-01), Kendziora et al.
patent: 3982888 (1976-09-01), Moussou et al.
patent: 4047886 (1977-09-01), Heyrand
patent: 4510363 (1985-04-01), Reynolds, Jr.
American Wheels De Mexico, S.A.D. E C.V.
Yuen Henry C.
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