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US 2024/0043701 A1Published application
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
The objective of the present invention is to provide a composite plated steel sheet, which has excellent post-formation corrosion resistance by preventing the spread of cracks in a resin layer even if cracks occur in the plating layer of the composite plated steel sheet.
Claims17
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, and
- a hardness of the resin powder is 1.1 to 2 times that of the base resin.
3 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.
2 more elements
Dependencies are inferred from the claim text.