The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2018
Filed:
May. 23, 2012
Applicants:
Tatsuya Miyoshi, Tokyo, JP;
Seiji Nakajima, Tokyo, JP;
Hiroki Nakamaru, Tokyo, JP;
Inventors:
Assignee:
JFE STEEL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/02 (2006.01); B32B 15/00 (2006.01); C23C 28/00 (2006.01); B32B 15/04 (2006.01); C23C 28/02 (2006.01); B32B 15/01 (2006.01); C22C 18/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/60 (2006.01); C25D 5/36 (2006.01); C25D 5/50 (2006.01); C25D 7/06 (2006.01); C21D 1/673 (2006.01); C25D 3/56 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0242 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); C21D 8/0205 (2013.01); C22C 18/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/60 (2013.01); C23C 28/00 (2013.01); C23C 28/02 (2013.01); C23C 28/021 (2013.01); C23C 28/025 (2013.01); C23C 28/322 (2013.01); C23C 28/3225 (2013.01); C23C 28/34 (2013.01); C25D 5/36 (2013.01); C25D 5/50 (2013.01); C25D 7/0614 (2013.01); C21D 1/673 (2013.01); C25D 3/562 (2013.01); Y10T 428/12549 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12757 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12806 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/27 (2015.01); Y10T 428/273 (2015.01);
Abstract
A hot-pressing steel sheet has excellent oxidation resistance to be capable of suppressing the formation of scales and ZnO during hot pressing as well as is excellent in cold pressing properties. A process of manufacturing a hot pressed member uses the steel sheet. The hot-pressing steel sheet includes a coating layer containing 10 to 25 mass % of Ni and a balance of Zn and inevitable impurities and having a mass per unit area of 10 to 90 g/m, and a lubricating layer containing a solid lubricant, in the order named on the surface of a steel sheet.