Scratch and corrosion resistant, formable nickel plated steel sheet, and manufacturing method
AssigneeToyo Kohan Co., Ltd.
InventorsHitoshi Omura, Katsutada Yamada, Hideo Omura
Life of this patent
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Abstract
An anti-scratch nickel plated steel sheet and strip is provided which comprises, applying a nickel plating to both sides of the sheet or strip, subsequently plating a nickel phosphorus alloy on at least one or the other side of said plated layer, then subjecting said plated article to a heat treatment under conditions sufficient to form a nickel ferrous alloy layer and to obtain a hardening effect of said nickel phosphorus alloy plated layer.
Claims9
An anti-scratch, corrosion resistant nickel plated steel sheet or strip comprising a base steel having a first layer of a nickel ferrous alloy with a coating weight of 5 to 45 g/m.sup.2 by weight of nickel on each side of said sheet or strip, and further comprising a second layer of a nickel phosphorus alloy plating with a coating weight of 1 to 18 g/m.sup.2 by weight of nickel and a phosphorus content of 3 to 15% by weight on at least one side of said nickel plated steel sheet and strip.
An anti-scratch nickel plated steel sheet or strip comprising a base steel having a first layer of a nickel ferrous alloy and a second layer of nickel plate wherein both layers have a total coating weight of 5 to 45 g/m.sup.2 by weight of nickel on each side of said sheet or strip, and further comprising a third layer of a nickel phosphorus alloy plating with a coating weight of 1 to 18 g/m.sup.2 by weight of nickel and a phosphorus content of 3 to 15% by weight on at least one side of said nickel plated sheet or strip.
A method for manufacturing an anti-scratch, corrosion resistant nickel plated steel sheet or strip comprising subjecting a base steel sheet or strip to a nickel plating having a coating weight of 5 to 45 g/m.sup.2 on each side of said sheet or strip,
- subsequently subjecting said coated base steel or strip to a nickel phosphorus alloy plating with a coating of 1 to 18 g/m.sup.2 by weight of nickel and a phosphorus content of 3 to 15% by weight on at least one side of said sheet or strip, and
- applying a heat treatment for a time of 0.2 to 900 minutes at a temperature of 450.degree. to 800.degree. C. to said sheet or strip.
Dependencies are inferred from the claim text.