Manufacture of abrasive products

Details Manufacture of abrasive products Manufacture of abrasive products

B - Operations, Transporting

24

D

57/2

B24D 18/00 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1326598

A B S T R A C T The invention provides a method of making an abrasive product which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate. The abrasive product is typically a diamond or cubic boron nitride composite compact. The method includes the steps of: (a) providing a substrate which has a surface to which the layer of bonded ultra-hard abrasive particles is to be bonded; (b) providing a slurry of the components, in particulate form, necessary to make the layer of bonded ultra-hard abrasive particles in a liquid medium adapted to flow and to set to a green state under predetermined conditions; (c) applying a layer of the slurry to the surface of the substrate; (d) applying the predetermined conditions during step (c) or immediately thereafter to cause the liquid medium to set to a green state; (e) contacting the green state layer with a complemental surface provided on a pressure pad; (f) removing substantially all the liquid medium from the green state layer; (g) placing the substrate/pressure pad combination in the reaction zone of a high temperature/high pressure apparatus; and (h) applying conditions of elevated temperature and pressure to the combination to convert the green state layer into a layer of bonded ultra-hard abrasive particles which is bonded to the substrate.

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