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:
Jul. 01, 2025
Filed:
Dec. 10, 2021
Epiroc Drilling Tools Aktiebolag, Fagersta, SE;
Tomas Rostvall, Stockholm, SE;
EPIROC DRILLING TOOLS AKTIEBOLAG, Fagersta, SE;
Abstract
A rock drill insert a substrate having a tip portion and a base portion, wherein the tip portion includes a polycrystalline diamond (PCD) structure bonded to the substrate. The substrate is formed of a cemented carbide comprising at least 5 wt.-% of a metallic binder. At a distance of 50 μm from a surface of the base portion of the substrate, at least 20 vol.-% of the metallic binder is present in a hexagonal close packed (HCP) crystallographic form. Furthermore, a drill bit including a plurality of the above-described rock drill insert is disclosed, as well as a method for manufacturing the rock drill insert.