Title:
DIAMOND AND CUBIC BORON NITRIDE ABRASIVE COMPACT USING SIZE SELECTIVE GRANULE LAYER
Document Type and Number:
Japanese Patent JPS5836977
Kind Code:
A
Abstract:
Disclosed is an improved process for preparing a composite compact wherein a mass of abrasive crystals, a mass of metal carbide, and a bonding medium are subjected to a high-temperature/high pressure process for providing a composite compact. The sintered carbide mass supports the mass of abrasive crystals and bonding or catalyst metal, and the abrasive crystal grains are directly bonded to adjacent crystal grains in the mass thereof. Such improved process comprises disposing the mass of abrasive crystals in layers wherein the coarsest layer is closest to the carbide mass and is composed of crystals having a largest dimension of between about 75 and 500 microns and the finest layer is disposed farthest away in the carbide mass and is composed of crystals having a largest dimension of less than 10 microns. The abrasive crystals are selected from the group consisting of diamond and cubic boron nitride and preferably are diamond; the metal carbide preferably is tungsten carbide; and the bonding metal preferably is cobalt. The resulting improved composite compact also is disclosed.
Inventors:
HARORUDO POORU BOOBUENKAAKU
GOOTON MAAKUUTSUDO KIBURAA
GOOTON MAAKUUTSUDO KIBURAA
Application Number:
JP19944281A
Publication Date:
March 04, 1983
Filing Date:
December 09, 1981
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
B01J3/06; B21C3/02; B22F7/06; B24D3/06; C04B35/52; B24D3/08; C04B35/58; C04B35/583; C22B26/00; C22C26/00; C22C29/00; C30B29/38; (IPC1-7): C04B35/52; C04B35/58; C30B29/04; C30B29/38
Attorney, Agent or Firm:
Mitsuo Adachi