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US 4,216,250 AGranted
Method for producing a steel sheet having a zinc coating on one side
AssigneeNippon Steel Corporation
InventorsMotohiro Nakayama, Kazutsugu Nakajima
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Abstract
A method for producing a one-side zinc plated steel sheet, comprising; (a) a step of coating a steel sheet with zinc, (b) a step of heating the zinc-coated steel sheet to alloy at least the coated zinc on one side of the steel sheet with the steel sheet, and (c) a step of mechanically removing the coated zinc thus alloyed.
Claims10
A method for producing a steel sheet coated with zinc or a Fe-Zn alloy on one side comprising:
- (a) zinc-plating both sides of the steel sheet;
- (b) heating at least one side of the zinc-plated steel sheet to form a uniformly Fe-Zn alloyed layer having an iron content from 6 to 20% by weight on said one side;
- (c) mechanically removing the Fe-Zn alloy layer on said one side so as to leave an alloy layer on said one side corresponding to 0.001 g/m.sup.2 to 1 g/m.sup.2 of Zn;
- and then
- (d) temper-rolling said one side to flatten it.
2 more elements
A method for producing a zinc alloy coated steel sheet comprising:
- (a) zinc-plating both sides of the steel sheet;
- (b) heating both sides of the zinc-plated steel sheet to form a uniformly Fe-Zn alloyed layer having an iron content from 6 to 20% by weight on both sides;
- and
- (c) mechanically removing the Fe-Zn alloy layer from one of said sides so as to retain an alloy layer on said side corresponding to 0.001 g/m.sup.2 to 1 g/m.sup.2.
1 more element
A method for producing a steel sheet coated with zinc or a Fe-Zn alloy on one side comprising:
- (a) zinc-plating both sides of the steel sheet;
- (b) heating at least one side of the zinc-plated steel sheet to form a uniformly Fe-Zn alloyed layer having an iron content from 6 to 20% by weight on said one side;
- and
- (c) mechanically removing the Fe-Zn alloy layer on said one side so as to retain an alloy layer on said side corresponding to 0.001 g/m.sup.2 to 1 g/m.sup.2.
1 more element
Dependencies are inferred from the claim text.