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据国际焊接学会论文№212G—452—79介绍,日本住友金属工业有限公司用空心钨极进行钨极氩弧焊。由于空心钨极焊接具有电弧力低及矩形电弧力分布的特点,因而焊道平整、光滑、不易出现咬肉、凹陷等缺陷,可用大电流、高焊速进行焊接,这就克服了一般钨极氩弧焊生产率低的缺点。
According to the International Welding Society Papers № 212G-452-79 introduced Sumitomo Metal Industries Co., Ltd. with a hollow tungsten TIG welding. Since hollow tungsten welding has the characteristics of low arc force and rectangular arc force distribution, the weld bead is smooth and smooth, and the defects such as biting and depression are difficult to occur. The welding can be performed with high current and high welding speed, which overcomes the defects of common tungsten TIG welding shortcomings of low productivity.