ZINC-ALUMINUM-MAGNESIUM COATED STEEL PLATE HAVING EXCELLENT BLACKENING RESISTANCE AND MANUFACTURING METHOD THEREFOR

Title:

ZINC-ALUMINUM-MAGNESIUM COATED STEEL PLATE HAVING EXCELLENT BLACKENING RESISTANCE AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2024/027840

Kind Code:

A1

Abstract:

A zinc-aluminum-magnesium coated steel plate having excellent blackening resistance, comprising a substrate and a coating plated on the substrate, a surface of the coating being further coated with a fingerprint-resistant film; and the components in mass percentages of the coating comprising: 45%-65% of Al, 0.2%-5% of Mg, 0.1%-3% of Si, and 0.001%-0.15% of Zr, with the balance being Zn and other inevitable impurities. Correspondingly, further disclosed is a manufacturing method for the zinc-aluminum-magnesium coated steel plate, comprising the steps of: (1) substrate pretreatment; (2) hot dipping the substrate in a plating solution bath; (3) taking the steel plate out of a plating solution, and performing segmented cooling; (4) coating same with a fingerprint-resistant film and heating, baking and curing same, the steel plate heating and baking temperature being 100-160℃; (5) cooling the steel plate: controlling the cooling speed of the steel plate to be 5-20 ℃/s; and (6) rolling the steel plate into a finished product roll.

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Inventors:

WANG KAI (CN)
JIN XINYAN (CN)
REN YULING (CN)
QIANG SHAOMING (CN)
CHENG GUOPING (CN)
LIN CHUANHUA (CN)
SHI LIANGQUAN (CN)
TAN NING (CN)

Application Number:

PCT/CN2023/111323

Publication Date:

February 08, 2024

Filing Date:

August 04, 2023

Export Citation:

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Assignee:

BAOSHAN IRON & STEEL (CN)

International Classes:

C23C2/06

Foreign References:

CN108118218A	2018-06-05
CN112538306A	2021-03-23
CN115478239A	2022-12-16
JP2003027202A	2003-01-29
CN111519117A	2020-08-11
CN109402547A	2019-03-01

Attorney, Agent or Firm:

SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)

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