Title: Coated abrasive product comprising fused zirconia grains and method for abrading iron

Abstract: The cutting rate and useful life of conventional resin bonded coated abrasive products in extremely high pressure abrading operations is significantly increased by using abrasive mineral which consists essentially of fused zirconia. Substantial amounts of diluent may be included, e.g., by blending other less effective abrasive grains with fused zirconia grains or by crushing a hardened co-fusion of alumina and zirconia.

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Inventors: Leahy, Sidney M. (North Oaks, MN, US)

Application Number: 690599
Filing Date: 1976-05-27
Publication_date: 1976-12-14
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Primary Class(es): 451/59 51/295, 51/298, 51/309
Other Classes:
US Patent Ref:

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2981615	Apr, 1961	Baumgartner	51/297.
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3175894	Mar, 1965	Foot	51/298.
3181939	May, 1965	Marshall et al.	51/309.
3205054	Sep, 1965	Tucker	51/298.
3454385	Jul, 1969	Amero	51/298.
3498769	Mar, 1970	Coes	51/298.
3781172	Dec, 1973	Pett et al.	51/309.
3787273	Jan, 1974	Okrepkie et al.	51/298.
3893826	Jul, 1975	Quinan et al.	51/297.

Other Refs:
Primary Examiner: Arnold, Donald J.
Assistant Examiner:
Attorney: Alexander, Sell, Steldt & DeLaHunt