Abrasive tool making process – material – or composition – Pore forming
Patent
1977-07-01
1978-09-19
Arnold, Donald J.
Abrasive tool making process, material, or composition
Pore forming
51295, 51298R, C09K 314, B24D 332
Patent
active
041150775
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, kneading together the pore forming granules, abrasive grins, a binder, a glass fiber reinforcement and a filler 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 rolls, blanking out circular pieces from the sheet, and baking the circular pieces of the uncured abrasive composition containing the pore forming granules uniformly dispersed therein to cure the binder and form pores by the decomposition of at least part of the thermally decomposable substance contained in the granules, whereby resinoid abrasive wheels having pores uniformly dispersed therein are obtained.
REFERENCES:
patent: 2958593 (1960-11-01), Hoover et al.
patent: 3474048 (1969-10-01), Chappelear
patent: 3529945 (1970-09-01), Charvat
patent: 3950148 (1976-04-01), Fukuda
patent: 3950149 (1976-04-01), Fukuda
patent: 4038047 (1977-07-01), Haywood
Arnold Donald J.
Collard Allison C.
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