Acta Metall Sin  1998, Vol. 34 Issue (4): 416-422    DOI:

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NUMERICAL SIMULATION OF TIG WELD POOL BEHAVIOR UNDER THE ACTION OF PULSED CURRENT

WU Chuansong (Institute of Joining Technology; Shandong University of Technologyl Jinan 250061)ZHENG Wei; WU Lin(College of Materials Science and Engineering; Harbin Institute of Technology Harbin 150001)

WU Chuansong (Institute of Joining Technology; Shandong University of Technologyl Jinan 250061)ZHENG Wei; WU Lin(College of Materials Science and Engineering; Harbin Institute of Technology Harbin 150001). NUMERICAL SIMULATION OF TIG WELD POOL BEHAVIOR UNDER THE ACTION OF PULSED CURRENT. Acta Metall Sin, 1998, 34(4): 416-422.

Abstract References Related Articles Recommended Metrics Download:  PDF(612KB)  Export:  BibTeX | EndNote (RIS)       Abstract  A mathematical model is established for simulating the TIG(Tungsten Inert Gas) weld pool behavior in pulsed TIG welding. It was analyzed how the pulsed current affects the fluid flow and heat transfer in a TIG weld pool and the pool geometry. The computed results show that the volume of weld pool is sensitive to the action of pulsed currellt, the gradiellt ofthe surface tension is the main driving force for the fluid flow in pulsed TIG weld pool, andthe fluid velocity field changes periodically with the pulsed current. The computer vision-basedexperiment system is used to measure the varying process of the weld pool width in a ptilsedcycle. The predicted weld pool width is in agreement with the measured one. Key words:  pulsed welding      weld pool      fluid flow      temperature profile      Received:  18 April 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I4/416 1 Ramanan N,Korpela s A.Metall Trans,1990;21 A:45 2 Choo R T C, Szekely J Weld J, 1991; 70: 2235 3 Zacharia T. Metall Trans; 1991; 22B: 233 4武传松,曹振宁,吴林金属学报,1992;28:B428 (Wu Chuansong,Cao Zhenning,Wu Lin. Acta Metall Sin , 1992; 28:B428) 5 Wu C S,Dorn L.Comput Mater Sci ,1994;2:741 6 Domey J, Aidun D K. Weld J, 1995; 75: 263s 7郑 炜,武传松,吴林.材料科学与工艺,1996;4:15(Zheng Wei, Wu Chuansong, Wu Lin, Mater Sci Technol , 1996;4:15) 8殷树言,张九海.气体保护焊工艺.哈尔滨:哈尔滨工业大学出版社,1988:181 (Yin Shuyan, Zhang Jiuhai. Gas Shielded Arc Weldiny Technology. Harbin: Harbin Institute of Technology Press, 1988: 181) 9郑 炜.哈尔滨工业大学工学博士学位论文,1996 (Zheng Wei. 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