TIG电弧载流区温度的低扰动静电探针差动分析

发布时间：2018-04-24 08:54

本文选题：电弧 + 载流区　；参考：《焊接学报》2017年05期

【摘要】：采用低扰动静电探针差动分析对TIG电弧载流区进行诊断,通过测定的饱和离子电流求解不同焊接电流和弧长下载流区温度分布.结果表明,低扰动静电探针差动分析测定的载流区温度变化特征与辐射光谱测量结果一致,但探针对电弧的冷却扰动导致差动分析测定的温度值低于光谱诊断的测量结果;电弧载流区温度分布宽度沿电弧轴线由阴极向阳极增加,载流区截面中心附近温度最高,并向电弧边缘减小,且阴极附近存在一个高温区;随着焊接电流的减少,温度分布宽度和载流区最高温度均减小,阴极附近高温区沿电弧轴向收缩;弧长增大会使载流区温度分布宽度增加,但最高温度基本不变.
[Abstract]:The low disturbance electrostatic probe differential analysis was used to diagnose the current carrying zone of TIG arc. The temperature distribution of different welding current and arc length download current was calculated by measuring the saturated ion current. The results show that the characteristic of temperature variation in the current carrying region measured by differential analysis of low disturbance electrostatic probe is consistent with the results of radiation spectrum measurement, but the temperature measured by differential analysis is lower than that measured by spectral diagnosis due to the cooling disturbance of the probe to the arc. The temperature distribution width of the arc current carrying zone increases from cathode to anode along the arc axis, and the temperature near the center of the current carrying zone is the highest, and decreases to the arc edge, and there is a high temperature zone near the cathode, and with the decrease of welding current, Both the temperature distribution width and the maximum temperature of the current carrying region decrease, and the high temperature region near the cathode shrinks along the arc axial direction, and the temperature distribution width of the current carrying zone increases with the increase of arc length, but the maximum temperature is basically unchanged.
【作者单位】：西安石油大学材料科学与工程学院;兰州财经大学;
【基金】：国家自然科学基金资助项目(51605384) 陕西省教育厅专项科研计划项目资助项目(15JK1575,14JK1568) 西安石油大学《材料科学与工程》省级优势学科资助项目
【分类号】：TG444.74

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