Metal deforming – Tool and/or tool holder – Tool comprising closed periphery deforming passageway
Patent
1986-04-08
1989-10-10
Crane, Daniel C.
Metal deforming
Tool and/or tool holder
Tool comprising closed periphery deforming passageway
75243, 501 90, B21C 302
Patent
active
048723339
ABSTRACT:
A wire drawing die is provided which is characterized by containing a particular thermally stable diamond compact through which a hole is formed for receiving the wire to be drawn therethrough. The thermally stable diamond compact, which preferably has a hexagonal or circular shape in plan, comprises a mass of diamond particles present in an amount of 80 to 90 percent by volume of the compact and a second phase present in an amount of 10 to 20 percent by volume of the compact, the mass of diamond particles containing substantial diamond-to-diamond bonding to form a coherent, skeletal mass and a second phase consisting essentially of silicon, the silicon being in the form of silicon and/or silicon carbide.
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Bullen, G. J., "The Effect of Temperature and Matrix on the Strength of Synthetic Diamond", Industrial Diamond Review, Oct. 1975, pp. 363-365.
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