单一成分活性剂对铝合金作用效果的研究

Effect of activating flux with single component on TIG welding of aluminium alloy

活性化TIG(A-TIG)焊已成为近年来的研究热点,但主要集中在不锈钢和钛合金两种材料,在铝合金中的应用较少。针对铝合金A-TIG焊进行了初步的研究和探索,选择四种单一成分的活性剂,采用表面两侧涂敷方式,通过2A14铝合金的平板堆焊实验,研究了在相同规范下不同活性剂对焊缝熔深、焊缝成形、气孔和微观组织的影响。实验结果表明,与常规TIG焊相比,活性剂能显著增加焊缝熔深,不同活性剂增加熔深的效果不同。

Activating flux Tungsten Inert Gas（A-TIG） welding technique has become a hot-spot research area in welding industry.Currently research is mainly focused on the materials such as stainless steel and titanium alloy and few reports exist on material of aluminum alloy.In this paper,A-TIG welding of aluminum alloy with single component flux was experimentally carried out.Bead-on-plate welding of 2A14 Al alloy using the boundary coating method is used.Experimental results show that the weld penetration depth can be increased in A-TIG welding compared with conventional TIG welding.Different flux component has different effect on penetration depth increase.