Patent · US Expired

Method of making a composite abrasive compact

US7074247B2 · kind B2 · utility

30Cited by

5References

16Claims

0Family size

Inventors

Klaus Tank · Germiston, ZA
Moosa Mahomed Adia · Kimberley, ZA
Roy Derrick Achilles · Germiston, ZA
Paul Machael Daniel · Springs, ZA

Key dates

Filing date	Oct 15, 2001
Grant date	Jul 11, 2006
Priority date	—
Expiry date	Jan 19, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22F2999/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

There is provided a method of making a composite abrasive compact which comprises an abrasive compact bonded to a substrate. The abrasive compact will generally be a diamond compact and the substrate will generally be a cemented carbide substrate. The composite abrasive compact is made under known conditions of elevated temperature and pressure suitable for producing abrasive compacts. The method is characterised by the mass of abrasive particles from which the abrasive compact is made. This mass has three regions which are: (i) an inner region, adjacent the surface of the substrate on which the mass is provided, containing particles having at least four different average particle sizes; (ii) an outer region containing particles having at least three different average particle sizes; and (iii) an intermediate region between the first and second regions.

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