The Research of Controlled Rolling and Cooling Process in X70 Grade Pipeline Steel with Vanadium Microalloying

摘要：

　　In Formastor-Ⅱ thermal expansion phase transition instrument,determine test steels thermal expansion curves with different cooling rates during continuous cooling.Using thermal expansion combined with metallographic-hardness method to draw the continuous cooling transformation curve (CCT).According to the test results draft thermal simulation program,in Gleele-3500 thermal simulation test machine,conduct thermal simulation experiment for vanadium microalloying X70 grade pipeline steel at different deformation temperature,deformation extent and coiling temperature.Analysis that the microstmcture was influenced by different rolling process.The results showed that:in industrial production,the experiment steels rough rolling temperature should be controlled more than 1020℃,finishing temperature controlled in 820±20℃ and coiling temperature controlled in 500~530℃ to obtain acicular ferrite.

关键词： X70 grade pipeline steel acicular ferrite CCT curve microstructure

作者: Xiaoyu Ye Kaihua Zhang Jun Zuo

作者单位: PanGang Group Research Institute Co., Ltd., Chengdu, 611731, Sichuan, China

会议类型: 国际会议

会议名称: the 2011 International Conference on Biotechnology, Chemical and Materials Engineering (2011生物,化学与材料工程国际会议(CBCME 2011))

会议地点: 昆明

会议语种:英文

页码: 1033-1037

在线出版日期: 2011-12-28（万方平台首次上网日期，不代表论文的发表时间）