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. 01, 2016
Filed:
Sep. 19, 2013
Applicant:
Hitachi Metals, Ltd., Tokyo, JP;
Inventor:
Shiho Fukumoto, Shimane, JP;
Assignee:
HITACHI METALS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/22 (2006.01); C22C 38/24 (2006.01); C21D 8/02 (2006.01); C21D 9/18 (2006.01); C22C 38/30 (2006.01); B26D 1/00 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); B23D 61/12 (2006.01); B23D 65/00 (2006.01); C21D 6/00 (2006.01); C21D 1/25 (2006.01); C21D 9/22 (2006.01);
U.S. Cl.
CPC ...
C22C 38/30 (2013.01); B23D 61/127 (2013.01); B23D 65/00 (2013.01); B26D 1/0006 (2013.01); C21D 1/25 (2013.01); C21D 6/002 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C21D 9/22 (2013.01); C21D 2211/004 (2013.01);
Abstract
A high speed tool steel containing, by mass percent, 0.5-1.5% of C; 1.0% or less of Si; 1.0% or less of Mn; 3.0-5.0% of Cr; 15.0-25.0% of one or two kinds of W and Mo according to a formula (W+2Mo); 1.0-less than 1.5% of V; 5.0-10.0% of Co; and a remainder including Fe and impurities, the high speed tool steel further containing 0.0005-0.004% of Ca and 0.005-0.015% of N. Also, a material for a blade edge that is made of the high speed tool steel and a cutting tool made by welding the material for the blade edge to a body material. Further, a manufacturing method of the material for the blade edge.