HIGH TEMPERATURE PROPERTIES TEST AND RESEARCH OF 9Cr1Mo(P9)SEAMLESS PIPE USED IN PETROCHEMICAL INDUSTRY

摘要：

　　Production technical process of BaoSteel-produced 9Cr1Mo(P9)seamless pipe is presented,and creep property of isothermal annealed state of that steel is studied under the temperatures of 550℃,600℃,650℃,700℃.Also,isothermal extrapolation method and Larson-Miller method are employed to extrapolate creep rupture strength of the steel at the creep time of 20000h,40000h,60000h and 100000h.The results show that high temperature properties of BaoSteel-produced 9Cr1Mo(P9)seamless pipe meets the API 530 standard of USA and the SH/T3037 standard of Chinas petrochemical industry,and the steel can be used in large scale petroleum cracking equipment.Meantime,the comparison of creep properties at 650℃ and transient elevated temperature properties at different temperatures between isothermal annealed state and normalized+tempered state of 9Cr1Mo(P9)seamless pipe as well as the microstructure analysis show that the normalized+tempered 9Cr1Mo(P9)seamless pipe presents better high temperature properties.

关键词： 9Cr1Mo(P9)steel seamless pipe creep rupture isothermal extrapolation Larson-Miller method

作者: Qijiang Wang Yedong Zhou Qinglian Zhang

作者单位: Baoshan Iron&Steel Co.,LTD.,Research Institute,Shanghai,201900

会议类型: 国际会议

会议名称: Energy Materials 2014(第一届能源材料国际会议)

会议地点: 西安

会议语种:英文

页码: 693-701

在线出版日期: 2014-11-04（万方平台首次上网日期，不代表论文的发表时间）