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王西昌, 左从进, 柴国明, 张连锋. 活性剂对GH4169薄板电子束焊接焊缝成形的影响[J]. 焊接学报, 2009, (2): 83-86.
引用本文: 王西昌, 左从进, 柴国明, 张连锋. 活性剂对GH4169薄板电子束焊接焊缝成形的影响[J]. 焊接学报, 2009, (2): 83-86.
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WANG Xichang, ZUO Congjin, CHAI Guoming, ZHANG Lianfeng. Effect of activating fluxes on appearance of weld in thin plate electron beam welding of nickel-base super alloy GH4169[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (2): 83-86.
Citation: WANG Xichang, ZUO Congjin, CHAI Guoming, ZHANG Lianfeng. Effect of activating fluxes on appearance of weld in thin plate electron beam welding of nickel-base super alloy GH4169[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (2): 83-86.
shu

活性剂对GH4169薄板电子束焊接焊缝成形的影响

Effect of activating fluxes on appearance of weld in thin plate electron beam welding of nickel-base super alloy GH4169

    摘要
  • 摘要: 选用镍基高温合金GH4169进行试验,分析了不同种类活性剂对焊缝成形的影响规律,发现添加不同的氧化物对焊缝表面成形、熔深均有影响,而添加氟化物却影响不大.在此基础上,进行配比和优化,得到了能改善焊缝成形,提高表面质量的电子束焊活性焊剂.分析活性剂改善电子束焊接焊缝成形的原因,认为添加活性剂改变了熔池内部的表面张力梯度,从而影响了熔池的流动方式,形成了窄而深、表面成形较好的焊缝.结果表明,活性剂电子束焊接能改善焊缝表面成形,并可进一步消除咬边等表面缺陷,这对薄板的电子束焊接技术很有帮助。

     

    Abstract: In this paper, the effects of different kinds of activating fluxes on appearance of weld was analysed during the electron beam welding(EBW)of nickel-base super alloy GH4169, oxides had deep influence on welding depth and weld formation of both sides of plate, while fluoride had no influence.And on base of it, activating fluxes which can greatly improve weld shape and surface quality of EBW are obtained by combination and optimization.The reason of improving appearane of weld is that, with activating fluxes change surface tension gradient in the weld pool, then affect the pattern of the fluid flow, consequently form narrow and deep, well shape weld.The results show that activating electron beam welding can improve appearane of weld and eliminate some surface defects such as undercutting, which is very useful during thin plate EBW.

     

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