Abrasive tools having a permeable structure
First Claim
1. A bonded abrasive tool comprising:
- a) a blend of abrasive grains including;
i) agglomerates of filamentary sol-gel alumina abrasive grain having a length-to-cross-sectional-width aspect ratio of at least about 2;
1 held by a binding material; and
ii) agglomerated abrasive grain granules including a plurality of abrasive grains held in a three-dimensional shape by the binding material, the abrasive grains having a length-to-cross-sectional-width aspect ratio of about 1.0;
b) a bond; and
c) about 50 volume percent to 75 volume percent porosity;
wherein a content by weight of the agglomerates of filamentary sol-gel alumina abrasive grain is less than a content by weight of the agglomerated abrasive grain granules.
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Abstract
A bonded abrasive tool comprises a blend of abrasive grains and a bond component. The blend of abrasive grains comprises a filamentary sol-gel alumina abrasive grain and agglomerated abrasive grain granules. A bonded abrasive tool comprising an agglomerate of filamentary sol-gel alumina abrasive and non-filamentary abrasive grains, and a bond component is also disclosed. The filamentary sol-gel alumina abrasive grain has a length-to-cross-sectional-width aspect ratio of greater than 1.0. The agglomerated abrasive grain granules comprise a plurality of abrasive grains held in a three-dimensional shape by a binding material. A method of making such a bonded abrasive tool as described above is also disclosed.
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Citations
20 Claims
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1. A bonded abrasive tool comprising:
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a) a blend of abrasive grains including; i) agglomerates of filamentary sol-gel alumina abrasive grain having a length-to-cross-sectional-width aspect ratio of at least about 2;
1 held by a binding material; andii) agglomerated abrasive grain granules including a plurality of abrasive grains held in a three-dimensional shape by the binding material, the abrasive grains having a length-to-cross-sectional-width aspect ratio of about 1.0; b) a bond; and c) about 50 volume percent to 75 volume percent porosity; wherein a content by weight of the agglomerates of filamentary sol-gel alumina abrasive grain is less than a content by weight of the agglomerated abrasive grain granules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification