Heat treating of metallurgic article with varying aspect ratios

Details Heat treating of metallurgic article with varying aspect ratios Heat treating of metallurgic article with varying aspect ratios

1999-10-13

2000-12-26

Leung, Philip H.

Electric heating

Inductive heating

Specific heating application

219601, 219635, 219656, 148566, 148572, H05B 610

Patent

active

061663603

ABSTRACT:
This invention provides methods for rapidly heating a metal part of varying thickness. In general, the invention provides methods comprising heating the thicker section(s) of the part by induction heating and the thinner section(s) by resistance heating. Induction and resistance heating both quickly heat metals and because each is easily controlled individually, the part can be uniformly heated for hardening and tempering.

REFERENCES:
patent: 2163993 (1939-06-01), Dufour et al.
patent: 3708645 (1973-01-01), Osborn, Jr.
patent: 3715556 (1973-02-01), Balzer et al.
patent: 5055648 (1991-10-01), Iceland et al.

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