发明名称 |
Elongated percussive rock drilling element |
摘要 |
The present invention relates to a martensitic, corrosion resistant steel for rock drilling with properties which is adjusted essentially with regard to resistance against corrosion fatigue. This has been obtained in that an elongated element for percussive rock drilling which includes at least a thread and a flush channel has been made with corrosion resistant steel having a mainly martensitic structure.
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申请公布号 |
US6547891(B2) |
申请公布日期 |
2003.04.15 |
申请号 |
US20010784169 |
申请日期 |
2001.02.16 |
申请人 |
SANDVIK AB |
发明人 |
LINDEN JOHAN;LUNDELL LARS-GUNNAR |
分类号 |
C22C38/18;C22C38/00;C22C38/20;C22C38/22;C22C38/42;C22C38/44;E21B17/042;(IPC1-7):C22C38/18 |
主分类号 |
C22C38/18 |
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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