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首页> 外文会议>International Conference on Global Trends in Joining, Cutting and Surfacing Technology >Arc Character and Performance of Ultrasonic Assisted Tungsten Inert Gas Welding
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Arc Character and Performance of Ultrasonic Assisted Tungsten Inert Gas Welding

机译：超声波辅助钨惰性气体焊接的弧形性能和性能

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摘要

Ultrasonic assisted tungsten inert gas (U-TIG) welding is a newly developed arc welding method. During the process, extraneous ultrasonic vibration imposed directly on the welding arc and interacted with the plasma. High speed camcorder system was employed to study the arc shape. The results showed that the arc was compressed by the ultrasonic and its stability and stiffness were evidently improved. U-TIG and conventional TIG welding of 4.5mm thickness aluminum alloy were experimentally studied. Compared with conventional TIG welding, the U-TIG welding provides higher efficiency and better quality. The U-TIG penetration was increased up to 200%. At the meanwhile, the crystal grain of U-TIG welded beam was refined evidently, and the porosity decreased with the cracks eliminated, all of these were attributed to the introduction of the ultrasonic vibration in the weld pool.
机译：超声波辅助钨惰性气体（U-TIG）焊接是一种新型开发的电弧焊接方法。在此过程中，直接施加在焊接电弧上的外来超声波振动并与等离子体相互作用。采用高速摄像机系统来研究弧形。结果表明，通过超声波压缩电弧，显着改善了其稳定性和刚度。实验研究了4.5mm厚度铝合金的U-TIG和传统的TIG焊接。与传统的TIG焊接相比，U-TIG焊接提供更高的效率和更好的质量。 U-TIG渗透率增加到200％。同时，明显地细化了U-Tig焊接光束的晶粒，并且消除了裂缝的孔隙率降低，所有这些都归因于焊接池中的超声波振动。

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