Effect of rare earth metal on plasma properties in GMAW using CO2 shielding gas
Effect of rare earth metal on plasma properties in GMAW using CO2 shielding gas
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DOI：
10.1007/s40194-017-0491-4
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发表时间：
2017-06
影响因子：
2.1
通讯作者：
Titinan Methong;Tasuku Yamaguchi;M. Shigeta;Manabu Tanaka;R. Ikeda;Muneo Matsushita;B. Poopat
中科院分区：
文献类型：
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作者：
Titinan Methong;Tasuku Yamaguchi;M. Shigeta;Manabu Tanaka;R. Ikeda;Muneo Matsushita;B. Poopat
采用分别适用于O等离子体区和Fe等离子体区的发射光谱法，通过对气体保护焊（GMAW）等离子体特性的观测，研究了焊接极性和稀土金属（REM）元素对GMAW焊接接头物理性能的影响。在本试验条件下，采用MG-50焊丝和KC-500焊丝（添加REM的焊丝）进行100%CO2气体保护焊接。用KC-500电极丝对DCEN电极进行了测试，结果表明，氧等离子体区的最高温度约为13,000-13,500 K。最大值出现在远离弧轴的区域。REM元素的作用会在电极尖端产生高电流密度和电磁箍缩力。与此同时，在DCEN极性电弧过程中，金属液滴直径变得更小，类似于喷雾过渡。
Gas metal arc welding (GMAW) process, the effect of welding polarity and rare earth metal (REM) elements on physical properties was investigated through the observation of the plasma characteristics using the optical emission spectroscopy method which is suitable respectively to the O plasma region and the Fe plasma region. At the present experimental conditions, the MG-50 wire electrode and KC-500 wire electrode (REM-added electrode) were used for welding with 100% CO2shielding gas. The results of the KC-500 wire electrode with DCEN polarity showed that the maximum temperature of the O plasma region was around 13,000–13,500 K. The maximum occurs at the region apart from the arc axis. The effect REM elements can cause high current density and electromagnetic pinch force at the tip of electrode. Meanwhile, the metal droplet diameter became smaller like spray transfer during arc with DCEN polarity.