Title:
SUBSTRATE HAVING SANDING SURFACE AND PREPARATION METHOD THEREFOR, AND TIN-PLATED BOARD/CHROME-PLATED BOARD
Document Type and Number:
WIPO Patent Application WO/2023/004907
Kind Code:
A1
Abstract:
A preparation method for a substrate having a sanding surface. The preparation method comprises: providing a flattening mill, which comprises a first rack and a second rack, wherein the first rack comprises a first working roll and a third working roll which are arranged opposite each other, the second rack comprises a second working roll and a fourth working roll which are arranged opposite each other, the first working roll and the second working roll are located on the same side, the first working roll is an electric spark texturing roll, the second working roll is a grinding and polishing roll, the roughness of a surface of the first working roll is 1.6-2.2 μm, and the roughness of a surface of the second working roll is 0.35-0.75 μm; and making the substrate sequentially pass between the first working roll and the third working roll and between the second working roll and the fourth working roll, so as to form a sanding surface on a first surface of the substrate. After the substrate having the sanding surface is subjected to tin plating or chromium plating, when the substrate is processed into a necking tank or an easy-to-open cap, coatings at a necking position and a pre-scribing film are not prone to being damaged, such that the corrosion resistance of same is good.
Inventors:
HUANG JIUGUI (CN)
YU WEI (CN)
GUO HONG (CN)
YU WEI (CN)
GUO HONG (CN)
Application Number:
PCT/CN2021/114194
Publication Date:
February 02, 2023
Filing Date:
August 24, 2021
Export Citation:
Assignee:
JIANGSU SHAGANG GROUP CO LTD (CN)
INSTITUTE OF RES OF IRON & STEEL SHAGANG JIANGSU PROVINCE/SHA STEEL CO LTD (CN)
ZHANGJIAGANG YANGZI RIVER COLD ROLLED SHEET CO LTD (CN)
INSTITUTE OF RES OF IRON & STEEL SHAGANG JIANGSU PROVINCE/SHA STEEL CO LTD (CN)
ZHANGJIAGANG YANGZI RIVER COLD ROLLED SHEET CO LTD (CN)
International Classes:
B24B1/00; B21B1/38; C25D3/30
Foreign References:
| CN106917039A | 2017-07-04 | |||
| CN102021623A | 2011-04-20 | |||
| JP2004058090A | 2004-02-26 | |||
| CN104711474A | 2015-06-17 | |||
| CN106544588A | 2017-03-29 | |||
| JP2005281782A | 2005-10-13 | |||
| CN205236672U | 2016-05-18 | |||
| JPH0195803A | 1989-04-13 | |||
| US20100024513A1 | 2010-02-04 | |||
| CN107541663A | 2018-01-05 |
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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