Method for producing dual-phase and zinc-aluminum coated steels

Details Method for producing dual-phase and zinc-aluminum coated steels Method for producing dual-phase and zinc-aluminum coated steels

1981-05-27

1982-11-30

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 611, 148143, 4273837, 427433, 427436, C21D 148

Patent

active

043614485

ABSTRACT:
The invention relates to a method for producing coated high strength low alloy steel. A strip of steel is cleaned from rolling oil, is heated to the temperature range A.sub.1 to A.sub.3 in a protective atmosphere, is soaked and subsequently quenched in a zinc-aluminum bath for a short time sufficient to adhere a zinc coating to the steel surface, whereafter the steel strip is rapidly cooled to a temperature below 300.degree. C., to obtain a dual-phase steel structure.

REFERENCES:
patent: 2824021 (1958-02-01), Cook et al.
patent: 3782909 (1974-01-01), Clear et al.
patent: 4029478 (1977-06-01), Lee
patent: 4170495 (1979-10-01), Talikka

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