B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
57/16
B24D 3/10 (2006.01) B01J 3/06 (2006.01) B23B 27/14 (2006.01) C22C 26/00 (2006.01)
Patent
CA 1103042
TITLE OF THE INVENTION SINTERED COMPACT FOR USE IN A CUTTING TOOL AND A METHOD OF PRODUCING THE SAME ABSTRACT OF THE DISCLOSURE A sintered compact for use in a cutting tool and a method of producing the same are disclosed. The compact comprises 95 to 20 volume % of diamond finer than one micron in size and the balance binder also finer than one micron selected from the group of WC, (MoW)C, WC base cemented carbide and (MoW)C base cemented carbide. The method comprises pulverizing a diamond powder by using cemented carbide balls and a pot having a cemented carbide lining, mixing the diamond powder with a powder abraded from the balls and pot to produce a powder mix finer than one micron containing 95 to 20 volume % of diamond, heat-treating the powder mix in vacuum 90 as to degas, and hot-pressing the powder mix under high pressure at high temperature within the stable range of diamond. - 1 -
302420
Hara Akio
Yazu Shuji
George H. Riches And Associates
Sumitomo Electric Industries Ltd.
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