Rock drill insert and method for manufacturing a rock drill insert
US12345097B2 · kind B2 · utility
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14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2021 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Dec 10, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.