公开(公告)号：EP0171034A3

公开(公告)日：1987-05-27

申请号：EP85109681

申请日：1985-08-01

申请人： NORTON COMPANY

发明人： Rue, Charles Victor

IPC分类号： B24D03/14

CPC分类号： C04B35/6316 ,  B24D3/14 ,  C04B35/1115 ,  C09K3/1409

摘要： Bonding of sintered sol-gel aluminous abrasive grits, comprising sub-micron sized alpha alumina crystals, in vitrified (ceramic) wheels results in abrasive performance superior to premium grade fused alumina in grinding tool- steels. Viscosity of the bond and/or temperature of firing must be controlled to avoid reaction between the bond and the abrasive.

公开(公告)号：EP0118225A3

公开(公告)日：1987-06-03

申请号：EP84300758

申请日：1984-02-07

申请人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED

发明人： Almond, Eric Alfred ,  Gee, Mark Godden

IPC分类号： B24D03/14 ,  C03C14/00 ,  C09K03/14

CPC分类号： B24D3/14 ,  C09K3/1427

摘要： A diamond abrasive body which comprises a coherent, skeletal diamond mass constituting at least 70 percent by volume of the body and a glass phase comprising up to 30 percent by volume of the body uniformly dispersed throughout the diamond mass. The glass phase has a melting point in the range 800 to 1400°C. The abrasive body has good thermal stability and strength making it suitable for use as an insert for tools such as dressing tools and surface set drill bits. The abrasive body is produced by infiltrating molten glass into a coherent skeletal diamond mass. The glass phase is preferably transformed to a ceramic form by heat treatment of the infiltrated diamond mass.