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Simulation on temperature field of TIG welding of copper without preheating LEI Yu-cheng(雷玉成), YU Wen-xia(郁雯霞), LI Cai-hui(李彩辉), CHENG Xiao-nong(程晓农) School of Materials Science and Engineering... of tungsten inert gas(TIG), a model of non-steady three-dimensional temperature field for red copper’s TIG welding with a locomotive arc was established. The temperature field of welding pool was calculated......
Physics characteristic of coupling arc of twin-tungsten TIG welding ZHANG Guang-jun(张广军), LENG Xue-song(冷雪松), WU Lin(吴 林) State Key Laboratory of Advanced Welding Production Technology, Harbin...; Abstract: Twin-tungsten TIG welding was developed, in which two electrodes were placed in a single welding torch. In order......
Effect of YF3 on weld microstructure and performance of titanium alloy TC4 in TIG weldingYANG Chun-li(杨春利), LIN San-bao(林三宝), ZHANG Qing-tao(张清涛)(State Key Laboratory of Advanced Welding Production... Gas (A-TIG) welding was experimentally investigated. The results show that the weld grains of titanium alloy were refined after introducing the YF3 into the weld in A-TIG welding. This would achieve......
Microstructure and mechanical properties of Mg-Li alloy after TIG welding LIU Xu-he1, GU Shi-hai1, WU Rui-zhi1, LENG Xue-song2, YAN Jiu-chun2, ZHANG Mi-lin1 1. Key Laboratory of Superlight... type of toughness and brittleness in the heat-affected zone. During the welding process, aluminum and cerium are enriched at grain boundaries in the fusion zone. Key words: Mg-Li alloy; TIG welding......
apparatus of ultrasonic impact during TIG welding 表1 母材和焊丝化学成分 Table 1 Chemical compositions of base metal and filler metal 表2 TIG焊接电源参数 Table 2 Parameters of TIG welding power 表3... Microstructures of fusion zone and heat affect zone for TIG welding joint for cross section of 2A14 aluminum alloy 为了进一步分析超声能量对焊缝显微组织的影响,也对焊缝纵截面显微组织进行了观察,如图4所示.图4(a)为利用光学显微镜观察得到的组织,图4(b)为用扫描电镜观察得到......
of novel Co-base superalloys. In order to research the welding performance of Co-9Al-7.5W (mole fraction, %) superalloy on the 304 stainless steel by TIG cladding, and the friction coefficient... conditions. The results show that TIG welding Co-9Al-7.5W superalloy optimum parameters are that the welding current is 100 A, welding voltage is 12 V, heat input is 10.3 kJ/cm, the surface hardness......
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(Fig. 11(c)) and in WNZ (Fig. 11(e)). During the TIG welding process, the needle α grains gradually grow and form irregular coarse needle α Widmanstaten structure. The reason is that both a large amount of heat and long time heat preservation at high temperature occur during TIG welding process. Meanwhile, it can be found from Fig. 11 that the grain size in HAZ is smaller than that in WNZ......
layer with thickness of about 0.9 mm was obtained. The TIG surface alloying was carried out using a TIG welding setup consisting of a motion unit that controls the arc movement at a specific speed...Trans. Nonferrous Met. Soc. China 30(2020) 1550-1559 Feasibility of Al-TiC coating on AZ91 magnesium alloy by TIG alloying method for tribological application Chinmaya Kumar PADHEE1, Manoj MASANTA1......
dissimilar metals TIG welding-brazing joint ZHOU Li1, LI Zhi-yong1, ZHAO Hong-yun1, XIE Yu1, HUANG Yong-xian2, FENG Ji-cai1, 2 (1. Shandong Provincial Key Laboratory of Special Welding Technology... alloy and H62 brass dissimilar metals were welded by TIG welding-brazing lap using Zn-2%Al (mass fraction) flux-cored wire. Microstructure, interface layer structure and mechanical properties of the joint......
