Title:
ELECTROPLATED STEEL SHEET HAVING EXCELLENT SURFACE APPEARANCE, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/130603
Kind Code:
A3
Abstract:
The present invention relates to a zinc-nickel-alloy-electroplated steel sheet comprising a base steel sheet, and a zinc-nickel-plated layer which is located on at least one surface of the base steel sheet and which has a hairline pattern formed thereon, wherein the surface roughness of the surface of the base steel sheet, which forms an interface with the zinc-nickel-plated layer, is 0.7-1.0 μm on the basis of the average roughness (Ra) of the center line. According to the present invention, provided are: a zinc-nickel-electroplated steel sheet, which has a beautiful surface appearance after hairline processing, has better price competitiveness than a conventional stainless steel or a vinyl-coated steel, and can ensure high productivity in a coil polishing line; and a manufacturing method therefor.
Inventors:
KWON MOON-JAE (KR)
LEE JAE-YEONG (KR)
KIM SU-YOUNG (KR)
LEE JAE-YEONG (KR)
KIM SU-YOUNG (KR)
Application Number:
PCT/KR2019/017931
Publication Date:
August 27, 2020
Filing Date:
December 18, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
B21B1/22; C25D5/52; B23H1/04; B23H5/04; B24B21/04; C25D3/56; C25D5/36
Foreign References:
| KR20180074149A | 2018-07-03 | |||
| KR20070042578A | 2007-04-23 | |||
| KR20010112747A | 2001-12-22 | |||
| KR101510555B1 | 2015-04-09 | |||
| KR20170094804A | 2017-08-22 |
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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