B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
13/11, 13/18, 20
B32B 15/01 (2006.01) B32B 15/18 (2006.01) C25D 5/10 (2006.01)
Patent
CA 2040632
ELECTROGALVANIZED STEEL SHEET HAVING TWO ELECTROPLATING LAYERS AND EXCELLENT IN ANTIFRICTION, CORROSION RESISTANCE AND PAINTING FINISH ABSTRACT OF THE DISCLOSURE An electrogalvanized steel sheet having two electroplating layers and excellent in antifriction, corrosion resistance and painting finish, comprising: a steel sheet; a zinc electroplating layer formed on at least one surface of the steel sheet; and a zinc alloy electro- plating layer formed on the zinc electroplating layer. The zinc electroplating layer has a center-line mean roughness (Ra) of up to 1.5 µm and a plating weight of from 25 to 150 g/m2 per surface of the steel sheet. The zinc alloy electroplating layer comprises zinc and at least one element selected from the group consisting of cobalt, manganese, nickel, iron and chromium. The zinc alloy electroplating layer contains such at least one element in an amount of from 3 to 99 wt.% relative to the zinc alloy electroplating layer, and has a plating weight of from 1 to 20 g/m2 per surface of the steel sheet.
Ando Satoru
Kawabe Masaki
Ono Tadashi
Sagiyama Masaru
Yoshida Masafumi
Ando Satoru
Kawabe Masaki
Macrae & Co.
Nkk Corporation
Ono Tadashi
LandOfFree
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