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《Acta Metallrugica Sinica》 2001-02
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MECHANISM OF THE GAS TUNGSTEN-ARC WELDING IN LONGITUDINAL MAGNETIC FIELD CONTROLLING——Ⅰ. Property of the Arc

LUO Jian, JIA Changshen , WANG Yasheng, XUE Jin, WU Yixiong Welding Research Institute, Shanghai Jiaotong University, Shanghai 200030 Welding Research Institute, Xi'an Jiaotong University, Xi,an 710049  
In gas tungsten-arc welding (GTAW) with longitudinal magnetic field controlling, the welding arc temperature field was measured by the infrared sensing and computer image technique. The distribution models of welding arc heat flow density of GTA welding with longitudinal magnetic controlling under the conditions of weak magnetic field and small welding current were developed for the first time. The new phenomenon of the welding arc effecting by the additional longitudinal magnetic field was studied, and the relationships between the welding arc current, voltage and intensity of the additional longitudinal magnetic field were analyzed.
【Fund】: 国家自然科学基金资助项目59775059
【CateGory Index】: TG456.2
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