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Stephen A Parsons

Richard P Burnand

Raymond Albert Chapman

Trevor J Martell

Henry B Dyer

John Dodsworth

The invention provides a method of making an abrasive product which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate. The abrasive product is typically a diamond or cubic boron nitride composite compact. The method includes the steps of:

Manufacture of abrasive products

The inventin provides a method of making an abrasive product which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate. This abrasive product is typically a composite abrasive compact. The method includes the steps of:

A cemented carbide which contains less than 20 weight percent of cubic boron nitride particle. The material is abrasive and wear resistant. The material is produced under cubic boron nitride synthesis conditions.

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Mondeor, Johannesburg, Transvaal, South Africa

Stephen A Parsons