在连续大电流区间获得稳定的熔滴过渡形式才是采用无氦混合气体保护实现高熔敷率MAG焊工艺的核心问题。
It is the key to realizing high deposition rates MAG process with non-helium in shielding-gas mixture to acquire stable metal transfer mode in the region of high continuous current.
在氦-氩混合气体保护条件下，对AZ31 镁合金板材进行了TIG 焊接，获得了表面光滑、无堆高和无变形等缺陷的焊缝。
The He-Ar mixed gas TIG welding for AZ31 magnesium alloy plate by was carried out. The surface of observed joint is smooth free from heap high and appearance defects.
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