Chromization of steels by gas process

Details Chromization of steels by gas process Chromization of steels by gas process

1981-04-29

1982-11-02

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 166, 204177, 427 38, 427253, C23C 1110

Patent

active

043571824

ABSTRACT:
A process for the chromization by gas of steels containing more than 0.2% of carbon, consisting of three successive treatments, the chromization treatment proper employing a cement having a ferrochrome base containing between 1% and 3% of carbon, and preferably 2%. The process is particularly useful in the chromization of structural and tool steels.

REFERENCES:
patent: 3190772 (1965-06-01), Berghaus et al.
patent: 3282746 (1966-11-01), Zlotek et al.
patent: 3730863 (1973-05-01), Keller
patent: 4242151 (1980-12-01), Leveque
patent: 4250208 (1981-02-01), Arai

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