不预热紫铜TIG焊接的工艺研究

The Technology Research of TIG Welding for Red Copper without Preheating

针对紫铜焊接性较差的特点,在不预热的情况下分别采用Ar、He、N2及Ar+N2保护气体对厚壁紫铜进行了TIG焊接工艺的研究,并对试验结果进行了分析与比较。试验结果表明,采用He、N2及Ar+N2保护气体可使得电弧的热效应显著提高,实现紫铜的不预热TIG焊接是可行的。

Aim at bad welding performance of red copper, the paper studied the TIG welding technology of thick-wall red copper adopting At, He, N2 and Ar＋N2 under non-warming-up condition, and analyzed and compared the test result.The experimental result shows that welding arc＇s heating effect is evidently increased with using controlled atmosphere of He, N2 and At＋N2, it＇s feasible to realize TIG welding of red copper under non-warming-up condition.