Method of adjusting hardness of metallic material

Details Method of adjusting hardness of metallic material Method of adjusting hardness of metallic material

1989-02-08

1989-10-17

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148152, C21D 200

Patent

active

048744379

ABSTRACT:
A method of adjusting the hardness of a metallic material includes the steps of induction-tempering both of tough and hard portions which have been given a hardness required for the hard portion to a hardness required for the tough portion, induction-hardening the hard portion alone to a hardness higher than that required for the hard portion, and induction-tempering the hard portion alone to a hardness required for the hard portion.

REFERENCES:
patent: 3377214 (1968-04-01), Woodbridge et al.
patent: 4415378 (1983-11-01), McKinney et al.

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