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US 12,448,674 B2Granted
Composite plated steel sheet having excellent post-formation corrosion resistance, and manufacturing method therefor
AssigneePosco
InventorIl-Ryoung Sohn
Life of this patent
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Abstract
A composite plated steel sheet including a base steel sheet; a Zn—Mg—Al-based plating layer provided on at least one surface of the base steel sheet; and a resin layer provided on at least one surface of the Zn—Mg—Al-based plating layer. The resin layer includes a base resin and resin powder. A hardness of the resin powder is 1.1 to 2 times that of the base resin.
Claims15
A composite plated steel sheet, comprising:
- a base steel sheet;
- a Zn—Mg—Al-based plating layer provided on at least one surface of the base steel sheet;
- and
- a resin layer provided on at least one surface of the Zn—Mg—Al-based plating layer,
- wherein the resin layer includes a base resin and resin powder,
- the resin powder includes polyurethane-based resin powder, and
- a hardness of the resin powder is 1.1 to 2 times that of the base resin.
4 more elements
A method for manufacturing a composite plated steel sheet, comprising:
- preparing a base steel sheet;
- forming a Zn—Mg—Al-based plating layer on at least one surface of the base steel sheet;
- and
- forming a resin layer containing a base resin and resin powder on at least one surface of the Zn—Mg—Al-based plating layer,
- wherein a hardness of the resin powder is 1.1 to 2 times that of the base resin, and
- wherein the resin powder includes polyurethane-based resin powder.
3 more elements
Dependencies are inferred from the claim text.