Resinoid bonded abrasive products

Details Resinoid bonded abrasive products Resinoid bonded abrasive products

B - Operations, Transporting

24

D

57/13

B24D 3/08 (2006.01) B24D 3/28 (2006.01)

Patent

CA 1080983

ABSTRACT OF THE DISCLOSURE The invention is a phenol-formaldehyde resin bonded grinding wheel which has grinding characteristics like that of shellac bonded grinding wheels. This soft, mild grind- ing action results from the basic phenol-formaldehyde resin initially containing from 0.5 to 2.5% by weight of hexamethylenetetramine, when used in conjunction with a material such as liquid one-stage phenol-formaldehyde resin, or furfural as a reactive liquid pick-up agent for the binder.

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