Hard sintered tool and manufacturing method thereof

Details Hard sintered tool and manufacturing method thereof Hard sintered tool and manufacturing method thereof

B - Operations, Transporting

23

P

B23P 5/00 (2006.01) B23B 27/14 (2006.01) C04B 41/50 (2006.01) C04B 41/85 (2006.01) C23C 16/02 (2006.01) C23C 16/27 (2006.01)

Patent

CA 2097252

ABSTRACT OF THE DISCLOSURE A hard sintered tool according to the invention includes a sintered diamond base material containing 85- 98% by volume of diamond grains having a mean grain size in the range from 0.1 to 10µm, 1-14% by volume of voids, and 0.05-3% by volume of an iron family metal or at least one kind of carbides of W, Ti, Ta, and Mo, and having a thickness in the range from 100 to 1000µm; a vapor phase synthesized diamond layer formed on the top surface of the sintered diamond base material and having a thickness in the range from 10 to 100µm; and a shank joined to the bottom surface of the sintered diamond base material. In the above-described construction, a hard sintered tool having high strength and resistance to abrasion and heat can be provided. - 40 -

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