Abrasive tool making process – material – or composition – Miscellaneous
Patent
1989-03-31
1990-09-04
Dixon, Jr., William R.
Abrasive tool making process, material, or composition
Miscellaneous
51309, B24D 300
Patent
active
049541390
ABSTRACT:
The present invention relates to a method for making a supported PCD or CBN compact comprising placing in an enclosure a cup assembly having a mass of diamond or CBN particles having a surface and the mass of cemented metal carbide having a surface, and optionally a catalyst for diamond (or optionally, CBN) recrystallization, said surfaces being in adjacency to form an interface. The enclosure then is subjected to a high pressure/high temperature process which results in diamond or CBN compacts preferably characterized by diamond-to-diamond or CBN-to-CBN bonding joined to a cemented carbide support at their respective surfaces. The supported compacts are recovered from the enclosure and cup assemblies and finished. The finished supported compacts in the enclosure exhibit non-planar bonded interface resulting in PCD or CBN compacts of substantially non-uniform thickness. The improvement in process of the present invention comprises said carbide mass surface being the mirror image of the finished PCD or CBN non-planar interface for making a finished supported compact of substantially uniform diamond or CBN compact thickness. Preferably, at least two compacts are produced in the process and the catalyst for diamond recrystallization is provided from the cemented metal carbide mass.
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patent: 4802895 (1989-02-01), Burnand
Dixon Jr. William R.
The General Electric Company
Thompson Willie J.
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