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Patent Searching and Data


Title:
PLATED STEEL SHEET HAVING EXCELLENT MELT WELDING RESISTANCE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/171253
Kind Code:
A1
Abstract:
A plated steel sheet having excellent melt welding resistance, and a manufacturing method therefor are provided. The present invention relates to a hot forming plated steel sheet having a plated layer formed on one surface or the both surfaces of a base steel sheet and having excellent melt welding resistance, wherein the surface layer part of the plated layer is composed of: an alloy layer which comprises hard alloy phases having a surface area ratio of 1% or more, and which has a thickness of 0.1-100 μm; and the balance of a soft plated layer, and the hard alloy phases comprise Al, Zn, Mg, Si, Fe and the balance of inevitable impurities, and have a sum of Al, Zn and Fe, of 70 wt% or more on the basis of the weight thereof.

Inventors:
PARK KYUNG-KWAN (KR)
HONG MOON-HI (KR)
PARK TAE-YEUL (KR)
HAN EUN-SU (KR)
KIM MOON-KI (KR)
Application Number:
PCT/KR2019/002084
Publication Date:
August 27, 2020
Filing Date:
February 20, 2019
Export Citation:
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Assignee:
POSCO COATED & COLOR STEEL CO LTD (KR)
International Classes:
C23C2/26; B21B37/58; B21B37/74; C22C21/10; C23C2/06; C23C2/12; C23C2/28; C23C2/40; C23C18/04
Foreign References:
KR20120063529A2012-06-15
KR100276323B12000-12-15
EP2009130A12008-12-31
JPS4947565B11974-12-17
KR100868457B12008-11-11
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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