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:
Mar. 12, 2019
Filed:
Aug. 13, 2013
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Inventors:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 125/26 (2006.01); C10M 169/04 (2006.01); B21B 23/00 (2006.01); B21B 17/02 (2006.01); C10M 125/18 (2006.01); B21B 19/04 (2006.01); B21B 25/04 (2006.01); C10M 103/06 (2006.01); B21B 45/02 (2006.01);
U.S. Cl.
CPC ...
C10M 125/26 (2013.01); B21B 17/02 (2013.01); B21B 19/04 (2013.01); B21B 23/00 (2013.01); B21B 25/04 (2013.01); C10M 103/06 (2013.01); C10M 125/18 (2013.01); C10M 169/04 (2013.01); B21B 45/0242 (2013.01); C10M 2201/081 (2013.01); C10M 2201/0873 (2013.01); C10N 2240/403 (2013.01); C10N 2250/08 (2013.01);
Abstract
A powder lubricant composition according to the present invention includes 65 parts by mass to 95 parts by mass of sodium borate, and 5 parts by mass to 35 parts by mass of cryolite. A method for manufacturing a seamless steel pipe according to the present invention includes adhering the above-described powder lubricant composition to a pipe inner surface of a work piece which is piercing rolled to have a tubular shape, and elongation rolling on the work piece after the adhering of the powder lubricant composition.