Title:
【発明の名称】多結晶質コンパクト工具ブランクの製法
Document Type and Number:
Japanese Patent JP3059738
Kind Code:
B2
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 enclosures 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 recyrstallization is provided from the cemented metal carbide mass,
Inventors:
David Bruce Sertti
Application Number:
JP8149590A
Publication Date:
July 04, 2000
Filing Date:
March 30, 1990
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B01J3/06; B22F5/12; B22F7/00; B22F7/06; B23P15/28; B24D3/06; C04B35/52; C04B35/583; C04B37/02; C22C26/00; E21B10/56; E21B10/573; (IPC1-7): C04B35/52; B22F7/00; B23P15/28; C04B35/583
Attorney, Agent or Firm:
Tokuji Omanuma