Method of surface hardening stainless steel parts

Details Method of surface hardening stainless steel parts Method of surface hardening stainless steel parts

1978-07-20

1980-01-22

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 166, C21D 148

Patent

active

041848993

ABSTRACT:
A method of surface hardening stainless steel parts for increasing their wear and fatigue resistance comprises (a) subjecting the surface of the stainless steel part to a salt bath containing, by weight, up to 0.5% sulphur, 4-30% of a cyanide, and 10-30% of a cyanate, for a time period of a few minutes to two hours, at a temperature of 540.degree.-600.degree. C.; and (b) then subjecting the stainless steel part to a nitriding process.

REFERENCES:
patent: 3753799 (1973-08-01), Wells
patent: 4006043 (1977-02-01), Gaucher et al.
patent: 4019928 (1977-04-01), Beyer et al.

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