A335P92钢厚壁管局部感应加热温度场的数值模拟  

Numerical simulation of local induction heating temperature field of A335P92 steel thick wall pipe

作　　者：张建林[1] 鲁立[1] 刘川[2] 迟鸣声 朱平[1] ZHANG Jlan-lin;LU Li;LIU Chuan;CHI Mlng-sheng;ZHU Ping(Remanufacturing and Electric Power Security Center;Suzhou Nuclear Power Research Institute Co Ltd,Suzhou 215004,China;2.School of Materials Science and Engineerin;Jiangsu University of Science and Technology,Zhenjiang 212003,Chin;3.CGN（Shanghai）New Energy Co Ltd,Shanghai 200126,China)

机构地区：[1]苏州热工研究院有限公司再制造与电力安全中心,江苏苏州215004 [2]江苏科技大学材料科学与工程学院,江苏镇江212003 [3]中广核上海新能源有限公司,上海200126

出　　处：《材料热处理学报》2018年第10期106-111,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金资助项目(51575251);国家重点研发计划重点专项(2017YFB0305303)

摘　　要：利用有限元软件ANSYS建立规格为？586 mm×72 mm的A335P92钢厚壁管焊接接头感应加热的电磁-热耦合数值模型,通过开发自动热追踪算法程序计算并分析钢管焊接接头局部焊后热处理内外壁温差以及截面温度场分布。对模型进行验证后,进一步分析了加热宽度、线圈匝数、频率、内壁换热系数对管道局部焊后热处理温度场的影响规律。结果表明,感应加热具有明显的集肤效应,在居里点出现明显的温度波动;加热宽度（线圈布置宽度）大于600 mm时,改变线圈匝数（n=10～30）、电磁频率（H=1000～3000 Hz）对管道内外壁温差影响不明显;内壁换热系数是管道内外壁温差的关键影响因素。A electromagnetic and thermal coupling numerical model of induction heating of A335 P92 steel thick wall pipe welded joint was established by using finite element software ANSYS. The temperature difference between the inner and outer wall and the distribution of cross-section temperature field in the local post-weld heat treatment of welded steel pipe joints were analyzed by an automatic thermal tracing algorithm program. After verification of the model, the effects of heating width, number of coils/coil gap, frequency and heat transfer coefficient of inner wall on the local heat treatment temperature field of the steel pipe were analyzed. The results show that the induction heating has obvious skin effect and the obvious temperature fluctuation occurs at Curie-point temperature; when the heating width（coil layout width） is greater than 600 mm, the change of number of coils（n=10-30） and electromagnetic frequency（H=1000-3000 Hz） has little effect on the temperature difference between the outer and inner walls of the steel pipe; and the heat transfer coefficient of the inner wall is the key factor affecting the temperature difference between the inner and outer walls of the steel pipe.

关 键 词：A335P92钢管 局部焊后热处理 电磁感应加热 数值模拟 

分 类 号：TG142.7[一般工业技术—材料科学与工程]