发明授权
- 专利标题: Fused aluminum oxide abrasive grain containing reduced titanium oxide
- 专利标题(中): 含氧化铝氧化物粉末磨料颗粒
-
申请号: US691817申请日: 1976-06-01
-
公开(公告)号: US4111668A公开(公告)日: 1978-09-05
- 发明人: Thomas Bruce Walker , Robert J. Seider , Paul Cichy
- 申请人: Thomas Bruce Walker , Robert J. Seider , Paul Cichy
- 申请人地址: NY Niagara Falls
- 专利权人: The Carborundum Company
- 当前专利权人: The Carborundum Company
- 当前专利权人地址: NY Niagara Falls
- 主分类号: B24D3/28
- IPC分类号: B24D3/28 ; C01F7/02 ; C09K3/14
摘要:
A fused abrasive grain, useful for inclusion in coated abrasives and bonded abrasives, consists essentially of alumina; titanium oxide containing from about 0.42 to about 0.84% titanium, by weight of the abrasive grain, present as a reduced titanium oxide having an average oxidation state lower than in Ti.sub.2 O.sub.3 ; from about 0.05 to about 0.3% by weight carbon; from about 0.02 to about 0.1% by weight Na.sub.2 O; and from 0 to about 0.1% by weight total of calcium and silicon oxides. The grain before roasting has a gain on ignition of from about 0.4 to about 0.7% by weight, and is produced in an electric furnace by fusing high-purity titania, alumina containing Na.sub.2 O as the only significant oxide impurity, and carbon, followed by crushing and roasting the fused grain.
公开/授权文献
信息查询