摘要:采用直流穿孔型PAW和“一脉一孔”型PAW焊接工艺进行了3 mm和6 mm厚TC4焊接试验,并对焊接试板外观、内部缺欠、机械性能及工艺性能进行了测试。结果显示,两种焊接方法焊接接头质量均能满足标准要求,但“一脉一孔”型PAW在降低气孔、降低焊缝下凹方面效果更好;对于中薄型钛及钛合金的等离子弧焊接,“一脉一孔”型PAW效果更好。
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