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A two-dimensional axisymmetric model of free burning tangsten inert gas (TIG) arc under the action of pulsed current is developed. Using the FLUENT software and choosing appropriate boundary conditions and strongly coupling control equations, a pulsed TIG arc is simulated. The variations of arc form, temperature field, temperature and velocity on the arc axis and surface pressure distribution of the workpiece are obtained and analyzed in the periodic current process; under the action of different values of peak current, duty ratio and pulse frequency, the arc pressure distributions are obtained and analyzed. The results show that they lag behind the variation of pulse current, the variation from base current to peak current is faster, then eventually reaches a relativly stable state; with the increase of peak current, the arc pressure increase greatly; with the increase of duty ratio, the arc pressure increases slowly; with the increase of pulse frequency, the arc pressure cannot reach a stable state gradually, and the max arc pressure tends to decrease.
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Keywords:
- pulsed current TIG welding /
- arc /
- numerical simulation /
- FLUENT
[1] Lu F G, Tang X H, Yu H L, Yao S 2006 Computational Materials Science 35 458
[2] He Ye,Guo W K,Shao Q Y, Xu P 2000 Acta Phys. Sin. 49 487 (in Chinese) [何 煜、郭文康、邵其鋆、须 平 2000 物理学报 49 487]
[3] Marco A Ramirez,Gerardo Trapaga, Jonh McKelliget 2004 Journal of Materials Processing Technology 30 155
[4] Lei Y P, Gu X H, Shi Y W, Murakawa Hidekazu 2002 Acta Metall. Sin. 37 537 (in Chinese) [雷永平、顾向华、史耀武、村川英一 2002 金属学报 37 537]
[5] Manabu Tanaka, Masao Ushio, John James Lowke 2005 JSME International Journal 48 397
[6] Hideya Nishiyama, Tomohiko Sawada, Hidemasa Takana, Manabu Tanaka, Masao Ushio 2006 ISIJ International 46 705
[7] Du H Y, Wei Y H, Wang W X, Fan D 2009 Journal of Materials Processing Technology 209 3752
[8] Fan D, Masao U, Fukuhisa Matsuda 1986 Trans. JWRI 15 1
[9] Masao Ushio, Fan D, Manabu Tanaka 1993 Trans. JWRI 22 201
[10] Fan D, Chen J H, Masao Ushio 1998 Chinese Journal of Mechanical Engineering 34 39 (in Chinese) [樊 丁、陈剑虹、牛尾诚夫 1998 机械工程学报 34 39]
[11] Fan H G, Shi Y W, Na S J 1997 Journal of Materials Processing Technology 72 437
[12] Fan H G, Na S G, Shi Y W 1997 Journal of Physics D 30 94
[13] Chen X 2009 Heat transfer and transmission of thermal plasma (Beijing: Science Press) p58 (in Chinese) [陈 熙 2009 热等离子体传热与传动(北京:科学出版社)第58页]
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[1] Lu F G, Tang X H, Yu H L, Yao S 2006 Computational Materials Science 35 458
[2] He Ye,Guo W K,Shao Q Y, Xu P 2000 Acta Phys. Sin. 49 487 (in Chinese) [何 煜、郭文康、邵其鋆、须 平 2000 物理学报 49 487]
[3] Marco A Ramirez,Gerardo Trapaga, Jonh McKelliget 2004 Journal of Materials Processing Technology 30 155
[4] Lei Y P, Gu X H, Shi Y W, Murakawa Hidekazu 2002 Acta Metall. Sin. 37 537 (in Chinese) [雷永平、顾向华、史耀武、村川英一 2002 金属学报 37 537]
[5] Manabu Tanaka, Masao Ushio, John James Lowke 2005 JSME International Journal 48 397
[6] Hideya Nishiyama, Tomohiko Sawada, Hidemasa Takana, Manabu Tanaka, Masao Ushio 2006 ISIJ International 46 705
[7] Du H Y, Wei Y H, Wang W X, Fan D 2009 Journal of Materials Processing Technology 209 3752
[8] Fan D, Masao U, Fukuhisa Matsuda 1986 Trans. JWRI 15 1
[9] Masao Ushio, Fan D, Manabu Tanaka 1993 Trans. JWRI 22 201
[10] Fan D, Chen J H, Masao Ushio 1998 Chinese Journal of Mechanical Engineering 34 39 (in Chinese) [樊 丁、陈剑虹、牛尾诚夫 1998 机械工程学报 34 39]
[11] Fan H G, Shi Y W, Na S J 1997 Journal of Materials Processing Technology 72 437
[12] Fan H G, Na S G, Shi Y W 1997 Journal of Physics D 30 94
[13] Chen X 2009 Heat transfer and transmission of thermal plasma (Beijing: Science Press) p58 (in Chinese) [陈 熙 2009 热等离子体传热与传动(北京:科学出版社)第58页]
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