EP0480133A2
Expired / Lapsed
EP
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Dry grinding wheel and its application
Assignee: Saint Gobain Abrasives Inc
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Filing: 1991-07-05
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Granted: —
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Expires: 2011-07-05
Abstract
Abstract Organically bonded abrasive articles comprising seeded sol gel alumina filamentary abrasive particles have high dry grinding performance when the particles have silicon-enriched surfaces.
Inventors
- 👤 Muni S. Ramakrishnan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:08
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
An abrasive article comprising an organic bond material and shaped abrasive particles formed of sub-micron sized crystals of a seeded sol gel alpha alumina, said particles having a substantially constant cross-sectional shape in one dimension and an aspect ratio in relation to that dimension of at least about one, and having a silicon-enriched surface.
Claim 2
Dependent Claim
20 words
An abrasive article according to claim 1 in which the aspect ratio of the particles is from 1 to 5.
Claim 3
Dependent Claim
22 words
An abrasive article according to claim 1 or 2, in which the grit size of the particles is from 16 to 35.
Claim 4
Dependent Claim
48 words
An abrasive article according to one of the preceding claims, in which the particles incorporated into the articles have a surface coating comprising from 0.02 to 1.0% of the total weight of the treated particles of a silicon-containing compound, the weight of the compound being expressed as silica.
Claim 5
Dependent Claim
30 words
An abrasive article according to one of the preceding claims in which the surface coating applied to the particles is selected from amino-silanes, silica sols or gels, and fumed silica.
Claim 6
Dependent Claim
27 words
An abrasive article according to one of the preceding claims, in which the organic bond material is selected from phenolic resins, optionally with cross-linking components incorporated therein.
Claim 7
Independent Claim
77 words
A method of dry grinding a substrate which comprises contacting the substrate with an abrasive product under abrading conditions said product comprising an organic bond material and abrasive particles formed of sub-micron crystals of a seeded sol gel alpha alumina, said particles having a substantially constant cross-sectional shape in one dimension and an aspect ratio in relation to that dimension of at least about one, having a silicon-enriched surface, especially according to one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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