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:
Apr. 07, 2026
Filed:
Dec. 20, 2021
Ab Sandvik Coromant, Sandviken, SE;
Jose Luis Garcia, Sandviken, SE;
Leif Dahl, Sandviken, SE;
Johnny Bruhn, Sandviken, SE;
Erik Holmstrom, Sandviken, SE;
AB Sandvik Coromant, Sandviken, SE;
Abstract
A cutting tool includes a supporting body and a cBN or PCD cutting edge tip attached to the supporting body via a 5-150 μm braze joint. The supporting body is cemented carbide having 3-25 wt % of a metallic binder, optionally up to 25 wt % of carbides or carbonitrides of one or more elements of group 4, 5, or 6, and the rest WC. The metallic binder includes at least 40 wt % Ni, and the braze joint has, in the order from the supporting body, a first layer of TiC situated next thereto, with an average thickness of 10-400 nm, a second layer, with an average thickness of 0.5-8 μm, having in average at least 5 wt % metallic Ni, in average 25-60 wt % metallic Cu and in average 15-45 wt % metallic Ti, and a third layer, with an average thickness of 4-145 μm, having metallic Ag and metallic Cu.