Patent · US Active

Gradient cemented carbide body and method of manufacturing thereof

US12319990B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

Sandvik Mining and Construction Tools AB · SE

Inventors

Mirjam Lilja · Stockholm, SE
Ida BORGH · Abrahamsby, SE
Ioannis ARVANITIDIS · Älta, SE
Leif Akesson · Houjie, CN
Xueying HAI · Abrahamsby, SE
Susanne Norgren · Huddinge, SE

Key dates

Filing date	Jul 8, 2020
Grant date	Jun 3, 2025
Priority date	—
Expiry date	Feb 28, 2042

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22F2207/11
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present disclosure relates to a method of making a cemented carbide mining insert, a cemented carbide mining insert with having a chemical and hardness gradient and to the use thereof. The method includes the steps of providing a green mining insert compact formed from a first powder including a WC-based hard phase, optionally one or more further hard-phase components and a binder, applying a second powder including a grain refiner compound and/or a carbon based grain growth promoter to at least one portion of a surface of the green mining insert compact, and sintering the green mining insert compact to produce a cemented carbide mining insert, wherein the first powder additionally includes Cr, in an amount such that the mass ratio of Cr/binder is of 0.01-0.3.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.