Manufacturing coated steel strip

Details Manufacturing coated steel strip Manufacturing coated steel strip

1980-03-03

1981-10-27

Kendall, Ralph S.

Coating processes

With pretreatment of the base

Heating or drying pretreatment

427321, 427319, 4273983, 148143, C23C 102, C23C 108

Patent

active

042973988

ABSTRACT:
Steel strip is dipped in a molten metal bath (e.g. Al-Zn) maintained at above 500.degree. C., cooled to solidify the metal coating, and then cooled to below 475.degree. C. by an intense and rapid cooling operation which does not impair the flatness of the strip, e.g. immersion in a hot aqueous bath or spraying a mist. Before hot-dipping, the steel strip is preferably recrystallisation annealed and cooled to a temperature not lower than that of the molten metal bath.

REFERENCES:
patent: 1635025 (1927-07-01), Ball
patent: 2062795 (1936-12-01), Pike
patent: 2166510 (1939-07-01), Whitfield et al.
patent: 2588439 (1952-03-01), Ward
patent: 2950991 (1960-08-01), Seymour
patent: 3322560 (1967-05-01), Monaco
patent: 3782909 (1974-01-01), Cleary et al.
patent: 3902929 (1975-09-01), Meszaros

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