| 发明名称 |
HARDMETALLKROPP FOR BERGBORRNING O DYL |
| 摘要 |
This invention is a carbide rod for rock drilling and mineral cutting. Because the rods are built of a core of carbide containing etaphase surrounded by an outer zone of etaphase-free carbide, they have increased strength and an extended service life during practical usage. |
| 申请公布号 |
SE446196(B) |
申请公布日期 |
1986.08.18 |
| 申请号 |
SE19850003804 |
申请日期 |
1985.08.14 |
| 申请人 |
SANTRADE LTD |
发明人 |
J * AKERMAN;U * FISCHER;T * HARTZELL |
| 分类号 |
C22C29/08;B23B27/14;B32B7/02;C22C;C23C8/20;E21B10/02;(IPC1-7):C22C29/08 |
主分类号 |
C22C29/08 |
| 代理机构 |
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代理人 |
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