Experimental Study on Optimization of Rolling Process for Nonquenched and Tempered N80 Oil Casings
LIU Yazheng1,LIU Zhao1,XU Jinqiao1,ZHANG Yusheng1,2,QIAO Aiyun2
1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Seamless Steel Tube Plant, Baotou Iron and Steel (Group) Co., Ltd., Baotou, 430080, Neimenggu, China
Abstract：Based on the dynamic phase transformation theory, the thermal simulation rolling tests with different parameters have been performed for 34Mn2VN to enhance impact toughness and the effect of processing parameters on microstructure and impact toughness was studied. Non quenched and tempered N80 oil casings of high quality have been produced on existing 180 production line at Baotou Iron & Steel (Group) Co. Ltd by optimizing processing parameters in which the finish rolling temperature is 850 ℃ and the cooling rate after rolling is 0.8～1.5 ℃/s. The results indicate that non quenched and tempered N80 oil casings produced meet the requirements of API SPEC 5CT seventh edition with improved impact toughness.
刘雅政;刘照;徐进桥;张玉胜;乔爱云. 非调质N80石油套管轧制工艺优化的实验研究[J]. 钢铁, 2006, 41(7): 0-0.
LIU Yazheng;LIU Zhao;XU Jinqiao;ZHANG Yusheng;QIAO Aiyun. Experimental Study on Optimization of Rolling Process for Nonquenched and Tempered N80 Oil Casings. Iron and Steel, 2006, 41(7): 0-0.
2006, Vol. 41 