Recessive defects in electromagnetic heating process of electrical resistance welding steel pipe
HAN Yi1, XIAO Yao1, ZHANG Ao-yin1, ZHAO Yu-fei1, LIU Feng1, LI Hong-bin2
1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, Hebei, China; 2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, Hebei, China
Abstract:With the rapid development of Chinese steel industry and electromagnetic metallurgy technology,the welded pipe industry has developed rapidly and the quality of welded steel pipes has been continuously improved. However,the electromagnetic metallurgy technology is difficult to avoid the inherent skinning and proximity effects,resulting in product defects that limit the wide application of welded steel pipes in harsh environments such as the deep sea,polar,and high pressure. In order to improve the safety service of steel pipes, a new method to analyze hidden defects by means of precision heating technology was propesed. The two processes of welding and heat treatment of steel pipes were carried out as a whole for comparative analysis. It was found and quantitatively explained that there is a hidden defect inside the steel pipe which is different from the conventional heating defects. The defect area ratio is given as the quantitative index for evaluating the hidden defects, and the influence law of the tube blank production speed on various hidden defects is analyzed. When the billet moving speed is in the range of 55-65 mm/s,the area defect rate tends to be gentle; when the speed is too high,the area defect rate increases rapidly; when the speed is too low,the heating repeat area causes energy loss that should not be neglected. The research has certain positive significance for improving the reliability of welded pipes in harsh environments and promoting the green development of steel manufacturing.
[1] 冯耀荣,张冠军,李鹤林. 石油管工程技术进展及展望[J]. 石油管材与仪器,2017,3(1):1.(FENG Yao-rong,ZHANG Guan-jun,LI He-lin. Progress and prospect on technology of petroleum tubular goods engineering[J]. Petroleum Instruments,2017,3(1):1.) [2] 杜伟,李鹤林,王海涛,等. 国内外高性能油气输送管的研发现状[J]. 油气储运,2016,35(6):577.(DU Wei,LI He-lin,WANG Hai-tao,et al. Research status of high-performance oil and gas pipelines in China and abroad[J]. Oil and Gas Storage and Transportation,2016,35(6):577.) [3] 李新创. 新时代钢铁工业高质量发展之路[J]. 钢铁,2019,54(1):1.(LI Xin-chuang. Road map to high-quality development of iron and steel industry in new age [J]. Iron and Steel,2019,54(1):1.) [4] 于恩林,肖瑶,刘丰,等. 高频直缝焊管焊接和热处理研究进展[J]. 钢铁,2019,54(6):1.(YU En-lin,XIAO Yao,LIU Feng,et al. Welding and heat treatment of high frequency longitudinal welded pipe[J]. Iron and Steel,2019,54(6):1.) [5] 田宝亮,牛培峰. 电磁加热梁在带钢板形优化中的设计与应用[J]. 钢铁,2017,52(12):54.(TIAN Bao-liang,NIU Pei-feng. Design and application of electromagnetic heating beam in shape optimization of strip[J]. Iron and Steel,2017,52(12):54.) [6] 梅瑞斌,李长生,韩斌,等. 热轧板坯高温感应加热有限元分析[J]. 钢铁,2008,43(2):56.(MEI Rui-bin,LI Chang-sheng,HAN Bin,et al. FEM analysis of slab induction heating[J]. Iron and Steel,2008,43(2):56.) [7] Inoue T,Suzuki M,Okabe T,et al. Development of advanced Electric Resistance Welding(ERW) linepipe “mighty seam TM” with high quality weld seam suitable for extra-low temperature services[J]. JFE Technical Report,2013,18:18. [8] Obeid O,Alfano G,Bahai H,et al. Numerical simulation of thermal and residual stress fields induced by lined pipe welding[J]. Thermal Science and Engineering Progress,2018(5):1. [9] TIAN P,XU K,LU G P,et al. Evaluation of the mechanical properties of the X52 high frequency electric resistance welding pipes[J]. International Journal of Pressure Vessels and Piping,2018,165:59. [10] Jinu G R,Sathiya P,Ravichandran G,et al. Experimental investigation of thermal fatigue behaviour of header tube to stub welded joint in power plants[J]. International Journal of Materials Research,2010,101(9):1180. [11] Mirzaee-Sisan A. Welding residual stresses in a strip of a pipe[J]. International Journal of Pressure Vessels and Piping,2018,159: 28. [12] 李殿杰,胡日荣,张春林,等. 高频焊接油管试制及其性能影响因素分析[J]. 钢铁研究学报,2016,28(10):75.(LI Dian-jie,HU Ri-rong,ZHANG Chun-lin,et al. Trial production and influencing factors analysis on properties of high frequency welding tubing[J]. Journal of Iron and Steel Research,2016,28(10):75.) [13] 闫波,宿成,王建钢,等. ERW焊接J55石油套管用热轧带钢的研制[J]. 轧钢,2017,34(1):70.(YAN Bo,SU Cheng,WANG Jian-gang,et al. Development of hot rolled strip for ERW welded J55 oil pipe[J]. Steel Rolling,2017,34(1):70.) [14] LI L X,XIAO L,LIAO H Q,et al. Welding quality monitoring of high frequency straight seam pipe based on image feature[J]. Journal of Materials Processing Technology,2017,246:285. [15] Babakri K A. Improvements in flattening test performance in high frequency induction welded steel pipe mill[J]. Journal of Materials Processing Technology,2010,210(15):2171. [16] Park G,Kim B,Kang Y,et al. Characterization of bond line discontinuities in a high-Mn TWIP steel pipe welded by HF-ERW[J]. Materials Characterization,2016,118:14. [17] 刘建芳,刘科伟,陈建,等. 高频焊管的常见缺陷及预防措施实践[J]. 四川冶金,2013,35(4):59.(LIU Jian-fang,LIU Ke-wei,CHEN Jian, et al. High-frequency welded pipe common defects and prevention practices[J]. Sichuan Metallurgy,2013,35(4):59.) [18] Wu C B,Kim J W. Analysis of welding residual stress formation behavior during circumferential TIG welding of a pipe[J]. Thin-Walled Structures,2018,132:421. [19] LI H P,HE L F,GAI K,et al. Numerical simulation and experimental investigation on the induction hardening of a ball screw[J]. Materials and Design,2015,87:863. [20] Cho K H. Coupled electro-magneto-thermal model for induction heating process of a moving billet[J]. International Journal of Thermal Sciences,2012,60:195. [21] 燕山大学. 一种对ERW钢管焊接过程温度场进行动态仿真的模拟方法:中国,201611135801.4[P].2017-05-31.(Yanshan University. A simulation Method for Dynamic Simulation of Temperature Field of ERW steel Pipe Welding Process:China,201611135801.4[P].2017-05-31.) [22] 燕山大学. 一种用于大直径焊管中频处理的内部测温夹具:中国,201620177366.0[P]. 2016-07-27.(Yanshan University. Internal Temperature Measuring Fixture for Medium Frequency Processing of Large Diameter Welded Pipe:China,201620177366.0[P]. 2016-07-27.) [23] Hasegawa N,Hamatani H,Mizuhashi N,et al. Development of a new optical monitoring system of welding conditions for producing HF-ERW line pipes with high weld seam toughness—Advanced welding process of HF-ERW 2[C]//Proceedings of the 2012 9th International Pipeline Conference. CaLgary, Alberta:[s.n.],2012.