Patent · US Active

EDM cuttable, high CBN content solid PCBN compact

US9028575B2 · kind B2 · utility

1Cited by

17References

10Claims

0Family size

Assignee

Element Six Limited · IE

Inventors

Yahua Bao · Orem, US
Scott L. Horman · Lindon, US
Xian Yao · Sandy, US
Qingyuan Liu · Longbeilingcun, CN

Key dates

Filing date	Sep 8, 2011
Grant date	May 12, 2015
Priority date	—
Expiry date	Oct 19, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/95
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present disclosure relates to cubic boron nitride (cBN) cutting elements that have high cBN content and that are cuttable by electric discharge machining (EDM). A cutting element according to an embodiment includes a self-sintered polycrystalline cubic boron nitride (PCBN) compact, having a first phase of cubic boron nitride (cBN) particles and a ceramic binder phase with titanium compounds. The first phase occupies greater than 80% by volume of the self-sintered PCBN compact. The self-sintered PCBN compact has an electrical conductivity sufficient to be cuttable by electrical discharge machining.

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