Title:
STEEL SHEET FOR PORCELAIN ENAMEL, AND METHOD OF MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/139313
Kind Code:
A1
Abstract:
A steel sheet for porcelain enamel according to an embodiment of the present invention comprises 0.0005 to 0.0030 wt% of C, 0.15 to 0.55 wt% of Mn, 0.001 to 0.03 wt% of S, 0.0001 to 0.002 wt% of Al, 0.001 to 0.020 wt% of P, 0.001 to 0.030 wt% of S, 0.02 to 0.06 wt% of Cu, 0.005 to 0.012 wt% of N, 0.05 to 0.20 wt% of Cr, and 0.03 to 0.06 wt% of O, with the balance being Fe and inevitable impurities. A cold-rolled steel sheet for porcelain enamel according to an embodiment of the present invention comprises an oxide layer that extends inward from the surface, wherein the thickness of the oxide layer is 0.006-0.030 µm.
Inventors:
KIM JAIIK (KR)
Application Number:
PCT/KR2021/019113
Publication Date:
June 30, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/20; C21D8/02; C22C38/42; C22C38/44; C22C38/46
Foreign References:
| KR20090043570A | 2009-05-06 | |||
| KR101193300B1 | 2012-10-19 | |||
| JP6683294B1 | 2020-04-15 | |||
| KR20160041967A | 2016-04-18 | |||
| CN108796380B | 2020-06-23 |
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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