发明名称 |
STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME |
摘要 |
Provided are a high-strength, high-manganese steel wire rod having excellent cold heading quality and not requiring spheroidizing and quenching-tempering treatments during manufacturing a bolt and a method of manufacturing a bolt using the steel wire rod. The method of manufacturing a steel wire rod includes heating a steel containing 12 to 25 wt % of Mn within a temperature range of 1100° C. to 1250° C., hot rolling the heated steel within a temperature range of 700° C. to 1100° C., and cooling the hot rolled steel to a temperature of 200° C. or less and cold caliber rolling or drawing to manufacture a steel wire rod.
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申请公布号 |
US2012128524(A1) |
申请公布日期 |
2012.05.24 |
申请号 |
US201113270856 |
申请日期 |
2011.10.11 |
申请人 |
CHUN YOUNG SOO;LEE CHONG SOO;LEE YOU HWAN;PARK KYUNG TAE;LEE TAE KYUNG;PARK SUNG HYUK;PARK CHAN HEE;KIM JI SOO;LEE YOUNG KOOK |
发明人 |
CHUN YOUNG SOO;LEE CHONG SOO;LEE YOU HWAN;PARK KYUNG TAE;LEE TAE KYUNG;PARK SUNG HYUK;PARK CHAN HEE;KIM JI SOO;LEE YOUNG KOOK |
分类号 |
C21D8/06;C21D8/00;C22C38/04;C22C38/06 |
主分类号 |
C21D8/06 |
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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