Prodroduction Technology of X80 Pipeline Steel on 2250 Hot Strip Rolling Line in Lianyuan Steel

摘要：

　　2250 hot strip rolling line is one of the most widely hot mills in China.The article introduces composition design and process control of X80 pipeline steel produced by 2250 hot strip rolling production line.Mechanical properties,Microstructure and precipitation behavior of X80 pipeline steel were studied.The results indicate that X80 pipeline steel with a thickness of 18.4mm produced by 2250 hot strip rolling line shows excellent mechanical properties,with an average yield strength of 655MPa and an average tensile strength of 750MPa.The average impact energy is 300J at -20℃,while the average percentage of DWTT shear area is 95%.It is observed that the microstructure of X80 pipeline steel mainly consists of granular bainite and acicular ferrite.The precipitation distributes homogeneously,with an average length of 20nm.

关键词： X80 pipeline steel 2250 hot strip rolling composition design rolling process ontrol

作者: TANG Xing-chang KANG Yong-lin CHEN Jian-xin LIAO Zhi

作者单位: School of Materials Science and Engineering,State Key Laboratory for Advanced Metals and Materials,U Valin Lianyuan Iron&Steel Co.Ltd Hunan,Loudi 417009,Hunan

会议类型: 国际会议

会议名称: Asia Steel International conference 2012(第五届亚洲钢铁大会)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2012-09-23（万方平台首次上网日期，不代表论文的发表时间）