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:
Dec. 30, 2025
Filed:
Dec. 17, 2020
Applicant:
Ab Sandvik Coromant, Sandviken, SE;
Inventors:
Assignee:
AB Sandvik Coromant, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 27/14 (2006.01); B24C 1/10 (2006.01); C22C 29/08 (2006.01);
U.S. Cl.
CPC ...
B23B 27/148 (2013.01); B24C 1/10 (2013.01); C22C 29/08 (2013.01); B23B 2222/28 (2013.01); B23B 2224/04 (2013.01); B23B 2224/24 (2013.01); B23B 2224/28 (2013.01); B23B 2224/32 (2013.01); B23B 2224/36 (2013.01);
Abstract
A cutting tool includes a substrate of cemented carbide having hard constituents in a metallic binder. The hard constituents include WC. The WC content in the cemented carbide is 80-95 wt %. The cemented carbide has a Fe+Ni+Co+Cr content of 3-13 wt %, an atomic ratio of 0.05<Fe/(Fe+Ni+Co+Cr)<0.35, an atomic ratio of 0.05<Ni/(Fe+Ni+Co+Cr)<0.35, an atomic ratio of 0.05<Co/(Fe+Ni+Co+Cr)<0.35 and an atomic ratio of 0.05<Cr/(Fe+Ni+Co+Cr)<0.35. The crack resistance W measured on the rake face of the cutting tool is at least 25% higher than the W measured on a cross section of the bulk area of the cutting tool.