发明名称 |
TOOL INSERT |
摘要 |
A tool insert comprising a composite diamond abrasive compact and a method of its production are provided. The composite abrasive compact is characterised by an intermediate layer (14) between the diamond compact (10) and the cemented carbide support (12). The intermediate layer (14) consists essentially of discrete cubic boron nitride particles constituting 60 to 40 percent by volume of the intermediate layer, carbide particles, preferably tungsten carbide particles and diamond solvent, preferably cobalt. The carbide particles and diamond solvent together constituted 40 to 60 percent by volume of the intermediate layer and the diamond solvent constitutes 15 to 25 percent by volume of the carbide/solvent combination. |
申请公布号 |
EP0272913(A3) |
申请公布日期 |
1990.05.16 |
申请号 |
EP19870311284 |
申请日期 |
1987.12.22 |
申请人 |
DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED |
发明人 |
BURNAND, RICHARD PATRICK;DODSWORTH, JOHN |
分类号 |
E21B10/46;B22F7/06;B23B27/14;B24D3/00;B24D3/34;E21B10/56;E21B10/567;(IPC1-7):B24D3/00 |
主分类号 |
E21B10/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|