Hard sintered body tool
AssigneeSumitomo Electric Industries, Ltd.
InventorsYasuyuki Kanada, Kunihiro Tomita, Tetsuo Nakai
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Abstract
A tool manufactured by brazing a hard sintered body such as a diamond or cBN to a tool substrate through a bonding layer comprising at least one of Ti and Zr by 15-65 wt % and Cu. Two ridges of the tool substrate on both sides each has a first ridge adjacent to and aligned with a ridge of the hard sintered body and a second ridge provided nearer to an inscribed circle of the tool than is the ridge of the hard sintered body. Also, an upright side face and a bottom of each seating groove formed in the tool substrate intersect each other at an angle smaller than the intersecting angle between a back side and a bottom of each hard sintered body.
Claims16
A hard sintered body tool comprising a tool substrate and a hard sintered body containing not less than 20 vol. % of diamond or cubic boron nitride and bonded to said tool substrate through a bonding layer comprising at least one of Ti and Zr by 15-65 wt %, and copper, wherein the tool substrate is made of a cemented carbide.
Dependencies are inferred from the claim text.