Process for producing a zinc or zinc alloy coated steel sheet ha

Details Process for producing a zinc or zinc alloy coated steel sheet ha Process for producing a zinc or zinc alloy coated steel sheet ha

1989-02-13

1990-09-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 384, 204 40, 204 551, 204 561, 427406, 4274192, 428629, 428632, 428659, C25D 500, C25D 908

Patent

active

049575945

ABSTRACT:
A zinc- or zinc alloy-coated steel sheet having an excellent spot-weldability, comprising: a base steel sheet; one or more layers coated on the steel sheet, at least one of the coated layers containing zinc as a major component; and an oxidized layer formed on the outermost of the coated layers and containing zinc in an amount of from 0.03 to 3.0 g/m.sup.2, the oxidized layer containing at least one of zinc oxide and zinc hydroxide.

REFERENCES:
patent: 2884350 (1959-04-01), Saubestre
patent: 3822118 (1974-02-01), Fukuzuka et al.
patent: 4707415 (1987-11-01), Ikeda et al.

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