Title:
COATED STEEL SHEET FOR HOT STAMPING AND AQUEOUS SURFACE TREATMENT LIQUID APPLICABLE TO SAME
Document Type and Number:
WIPO Patent Application WO/2023/198175
Kind Code:
A1
Abstract:
The present invention relates to a coated steel sheet for hot stamping and an aqueous surface treatment liquid applicable to same. A composite skin film layer is formed on a surface of a coated steel sheet by using an improved aqueous surface treatment liquid, such that the obtained coated steel sheet for hot stamping has good high-temperature lubricity during hot stamping processing, the processability of the coated steel sheet for hot stamping is improved, the wear of the surface of a hot stamping mold is reduced, the mold repair frequency is decreased, and the production efficiency is improved.
Inventors:
FANG WENQI (CN)
DAI YIGANG (CN)
MA YUAN (CN)
DAI YIGANG (CN)
MA YUAN (CN)
Application Number:
PCT/CN2023/088298
Publication Date:
October 19, 2023
Filing Date:
April 14, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C23C22/68
Foreign References:
| CN107636200A | 2018-01-26 | |||
| CN104093880A | 2014-10-08 | |||
| CN1530462A | 2004-09-22 | |||
| CN101421435A | 2009-04-29 | |||
| CN103797146A | 2014-05-14 | |||
| JPS6480522A | 1989-03-27 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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