发明申请
US20140150934A1 WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT
审中-公开
具有超级氢延迟耐断裂性的线，其制造方法，使用其的高强度螺栓和用于制造螺栓的方法
- 专利标题： WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT
- 专利标题（中）： 具有超级氢延迟耐断裂性的线，其制造方法，使用其的高强度螺栓和用于制造螺栓的方法
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申请号： US14232805申请日： 2012-05-14
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公开(公告)号： US20140150934A1公开(公告)日： 2014-06-05
- 发明人: You-Hwan Lee , Dong-Hyun Kim , Geun-Soo Ryu
- 申请人： You-Hwan Lee , Dong-Hyun Kim , Geun-Soo Ryu
- 申请人地址： KR Pohang-si, Kyungsangbook-do
- 专利权人： POSCO
- 当前专利权人： POSCO
- 当前专利权人地址： KR Pohang-si, Kyungsangbook-do
- 优先权： KR10-2011-0070206 20110715
- 国际申请： PCT/KR2012/003757 WO 20120514
- 主分类号： C21D9/00
- IPC分类号： C21D9/00 ; C22C38/08 ; C22C38/04 ; C22C38/00 ; C22C38/02
摘要：
The present invention relates to a wire rod used in bolts for automobile engines, for example, and more specifically to a wire rod having an improved resistance to hydrogen delayed fracture, to a manufacturing method for same, to a bolt using same and a method for manufacturing the bolt. Provided are a high strength wire rod having a superior resistance to hydrogen delayed fracture and a method for manufacturing same, a high strength bolt using the wire rod and a method for manufacturing same, wherein.the wire rod comprises, 0.3-0.7 wt % C, 0.05-2.0 wt % Si, 0.7-1.5 wt % Mn, 0.01-0.1 wt % Ni, and 30-70 ppm La, and the remainder thereof is comprised by Fe and inevitable impurities.
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