Claims
- 1. A process for the production of a bonded abrasive product comprising a bond material and filamentary abrasive particles which comprises:
- a) forming filamentary particles having an essentially uniform cross-sectional shape and an aspect ratio of at least about 1:1 from an alumina gel in which boehmite provides at least about 90% of the alumina solids weight and about 60% of the total solids weight and then firing the formed particles to convert the boehmite to alpha alumina and produce filamentary abrasive particles; and
- b) forming a bonded abrasive product from the filamentary abrasive particles and a bond material.
- 2. A process according to claim 1 in which the alumina gel also comprises up to about 40% by weight of a material selected from the group consisting of zirconia, titania, magnesia, ceria, spinel, hafnia, mullite, manganese dioxide, precursors of these oxides, and mixtures thereof.
- 3. A process according to claim 1 in which the filamentary abrasive particles are combined with a vitreous bond material to from an bonded abrasive product comprising 3% to 39% by volume of bond, 30% to 56% by volume of abrasive, and 5% to 67% by volume of pores.
- 4. A process according to claim 1 in which the filamentary abrasive particles are combined with a resinoid bond material to form a bonded abrasive which comprises 5% to 76% by volume of bond, 24% to 62% by volume of abrasive, and 0% to 71% by volume of pores.
- 5. A process according to claim 1 in which the filamentary abrasive particles are metal-bonded to a core material to form a metal single layer abrasive wheel.
Parent Case Info
This is a continuation-in-part of copending application(s) Ser. No. 07,517,914 filed on May 2, 1990, now U.S. Pat. No. 5,194,072, which is a continuation-in-part of Ser. No. 07/345,139 filed on Apr. 28, 1989, now U.S. Pat. No. 5,009,676.
US Referenced Citations (13)
Foreign Referenced Citations (5)
Number |
Date |
Country |
152768 |
Aug 1985 |
EPX |
168606 |
Jan 1986 |
EPX |
200487 |
Nov 1986 |
EPX |
11771 |
Jan 1912 |
GBX |
2055356 |
Jul 1983 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Proceedings of the British Ceramic Society, No. 15 Jan. 1970 pp. 69-83 H. D. Blakelock et al. |
Transactions and Journals of the British Ceramic Society 82 Jul.-Aug. 1983 pp. 143-145 J. D. Birchall. |
36 Journal of the American Ceramic Society 68 (1985) Sep., No. 9 pp. 500-505. |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
517914 |
May 1990 |
|
Parent |
345139 |
Apr 1989 |
|