Document Type and Number:
Japanese Patent JPS5540386
Kind Code:
B2
Abstract:
Resinoid abrasive wheels are continuously produced by preparing pore forming granules having predetermined mechanical strength and containing a substance thermally decomposable at a baking temperature for the production of resinoid abrasive wheels and a blowing agent, kneading the pore forming granules with abrasive grains and a thermosetting synthetic resin binder to prepare an abrasive composition, molding the abrasive composition into a block, heating the block by a high frequency heater, rolling the heated block into a sheet by a multiplicity of pairs of rolls, blanking out circular pieces from the sheet, and baking the circular pieces to cure the binder therein and form pores by the decomposition of at least part of the thermally decomposable substance contained in the granules and by the decomposition of the blowing agent contained in the granules. The resinoid abrasive wheels obtained have pores uniformly dispersed therein.
Application Number:
JP15529177A
Publication Date:
October 17, 1980
Filing Date:
December 22, 1977
Export Citation:
International Classes:
B24D3/00; B24D3/02; B24D3/32; B24D18/00; C08J5/14