发明名称 |
CEMENTED CARBIDE BODY WITH EXTRA TOUGH BEHAVIOUR |
摘要 |
The present invention relates to cemented carbide bodies preferably for rock drilling and mineral cutting. Due to the fact that the bodies are built up of a core of eta-phase containing cemented carbide surrounded by a surface zone free of eta-phase with low Co-content in the surface zone and successively increasing Co-content to a maximum in the outer part of the eta-phase-core they have obtained an increase in toughness and life at practical use. <IMAGE> |
申请公布号 |
ZA9200620(B) |
申请公布日期 |
1992.10.28 |
申请号 |
ZA19920000620 |
申请日期 |
1992.01.29 |
申请人 |
SANDVIK AB. |
发明人 |
JAN AKERMAN;UDO KARL REINHOLD FISCHER;ERIK TORBJORN HARTZELL |
分类号 |
C22C1/04;C22C1/05;C22C29/08;C23C8/20;C23C30/00;E21B10/56 |
主分类号 |
C22C1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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