Abrasive tool making process – material – or composition – Miscellaneous
Patent
1991-03-14
1993-05-18
Bell, Mark L.
Abrasive tool making process, material, or composition
Miscellaneous
51295, 51309, B24D 300
Patent
active
052117260
ABSTRACT:
Multigrain abrasive compacts and processes for making the same are provided which comprise fine granules of cubic boron nitride or diamond bound by a sintered matrix derived from a coating on the granules. The coating comprises one or more layers of an active coating material which chemically bonds to the underlying surface. These compacts are obtained by coating fine granules of cubic boron nitride or diamond with the active coating material and sintering the coated particles with or without a powdered metal or alloy. The compacts can be obtained utilizing a short sintering step with relatively low pressures and temperatures. In certain embodiments, the use of high pressure, high temperature equipment can be voided. These compacts have improved breakdown characteristics due to the nature of the coated particles incorporated therein. The process provided is well suited for the use of diamond powder obtained from chemical vapor deposition processes.
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Corrigan Francis R.
Slutz David E.
Bell Mark L.
General Electric Company
Thompson Willie J.
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