发明公开
EP3325769A1 CABLE BOLTS
审中-公开
- 专利标题: CABLE BOLTS
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申请号: EP16739129.1申请日: 2016-07-14
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公开(公告)号: EP3325769A1公开(公告)日: 2018-05-30
- 发明人: MESPLONT, Christophe , SUAZO LUENGO, Alejandro , DERYCKE, Steven , PAREDES MONTECINOS, Hector , DEKEMPENEER, Erik
- 申请人: NV Bekaert SA
- 申请人地址: Bekaertstraat 2 8550 Zwevegem BE
- 专利权人: NV Bekaert SA
- 当前专利权人: NV Bekaert SA
- 当前专利权人地址: Bekaertstraat 2 8550 Zwevegem BE
- 代理机构: Messely, Marc
- 优先权: EP15177973 20150723
- 国际公布: WO2017012994 20170126
- 主分类号: E21D21/00
- IPC分类号: E21D21/00 ; C21D1/18 ; C21D1/19 ; C21D1/25 ; C22C38/02 ; C22C38/18
摘要:
A cable bolt for providing support and balance to a rock mass, comprising: a multi-strand cable having a plurality of steel wires being twisted together, said multi-strand cable having a first end portion for anchoring in a borehole of rock mass and a second end portion for being positioned adjacent to the opening of the borehole, a fixture secured to the second end portion of said multi-strand cable, wherein at least one of the plurality of steel wires is made from steel having as steel composition: a carbon content ranging from 0.20 weight percent to 0.95 weight percent, a silicon content ranging from 0.5 weight percent to 2.0 weight percent, a manganese content ranging from 0.40 weight percent to 1.0 weight percent, a chromium content ranging from 0.0 weight per cent to 1.0 weight percent, a sulphur and phosphor content being limited to 0.025 weight percent, the remainder being iron, and said steel has as metallurgical structure: a volume percentage of retained austenite ranging from 4 percent to 25 percent, the remainder being tempered primary martensite and untempered secondary martensite.
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