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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.:

US 9783866 B1

PDFFull Text
Date of Patent:
Oct. 10, 2017

Filed:

Mar. 28, 2014

Method for producing steel for blades

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventor:

Shinichiro Fukada, Tokyo, JP;

Assignee:

Hitachi Metals, Ltd., Tokyo, JP;

Attorney:

Myers Bigel, P.A.

Primary Examiner:

Jessee Roe

Int. Cl.
CPC ...
C21D 9/52 (2006.01); C21D 9/18 (2006.01); C21D 9/46 (2006.01); C22C 38/44 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/18 (2006.01); C21D 6/00 (2006.01); C21D 8/04 (2006.01); C21D 1/26 (2006.01); C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/50 (2006.01);
U.S. Cl.
CPC ...
C21D 9/18 (2013.01); C21D 1/26 (2013.01); C21D 6/002 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0236 (2013.01); C21D 8/0268 (2013.01); C21D 8/0436 (2013.01); C21D 8/0473 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C21D 2211/004 (2013.01); C21D 2211/005 (2013.01);
Abstract

Disclosed is a method for producing steel for blades having a metal composition consisting of, by mass, 0.55% to 0.8% C, not more than 1.0% Si, not more than 1.0% Mn, 12.0% to 14.0% Cr, not more than 1.0% Mo, not more than 1.0% Ni, and the balance Fe with impurities, comprising: a batch annealing step for batch annealing a material to be cold rolled having the metal composition at a temperature of 500° C. to 700° C. for 3 to 30 hours; a continuous annealing step for continuously annealing the batch annealed material for 5 to 30 minutes so that the batch annealed material is heated to at least an Ac1 transformation point of the metal composition step to obtain a continuously annealed material; and a cold rolling step for cold rolling the continuously annealed material, wherein the continuous annealing step and the cold rolling step are performed at least once, respectively.

Find Patent Forward Citations

Fukada, Shinichiro. (2017). Method for producing steel for blades (U.S. Patent No. 9783866). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9783866

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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