ZINC PLATED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND SPOT WELDABILITY, AND MANUFACTURING METHOD THEREFOR

Number of patents in Portfolio can not be more than 2000

United States of America

APP PUB NO 20240368724A1
SERIAL NO

18773036

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Abstract

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The present invention relates to a zinc plated steel sheet having excellent surface quality and spot weldability, and a manufacturing method therefore. A zinc plated steel sheet according to one aspect of the present invention comprises a base steel sheet and a zinc-based plating layer formed on the surface of the base steel sheet, wherein the GDOES profile of oxygen, which is measured in the depth direction from the surface of the base steel sheet, has a form in which a local minimum point and a local maximum point alternately appear in the depth direction from the surface, and the difference (a local maximum value−a local minimum value) between the oxygen concentration (a local minimum value) at the local minimum point and the oxygen concentration (a local maximum value) at the local maximum point can be 0.1 wt % or more.

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Patent Owner(s)

Patent OwnerAddress
POSCO CO LTDPOHANG-SI GYEONGSANGBUK-DO 37859

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kang, Ki-Cheol Gwangyang-si, KR 24 34
Lee, Chung-Hwan Gwangyang-si, KR 9 11
Uhm, Sang-Ho Incheon, KR 9 8

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