Title: Sintered compact for use in machining chemically reactive materials
Application Number: 03148796 Application Date: 2003.06.26
Publication Number: 1485299 Publication Date: 2004.03.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B24D3/00,B24D3/14,C04B35/583,C04B35/622,C04B35/63,C04B35/64
Applicant(s) Name: Gen Electric Address:
Inventor(s) Name: Dole Stephen Lee
Attorney & Agent: liu yuanjin ma chongde
Abstract:
     A sintered cubic boron nitride (cBN) compact for use in a tool is composed of between about 60 and 80 volume % cBN having a volumetric mean particle size of between about 3 to 6 mu m and between about 40 and 20 volume % of a ceramic binder phase. The ceramic binder is composed of between about 20 and 60 volume % of one or more of a carbide, nitride, or boride of a Group IVB or VIB metal, and between about 40 and 80 volume % of one or more of carbides, nitrides, borides, or oxides of aluminum. The cBN compact additionally contains between about 3 and 15 weight % tungsten. The cBN compacts are especially useful in machining iron and like chemically reactive parts, especially where such parts are powder metal parts.
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