摘要: |
基于多层GH4169波纹管组件电子束焊接过程中的气孔缺陷问题,开展了工艺优化试验,并进行了气孔缺陷显微组织分析。研究结果表明:降低焊接速度、添加扫描功能或脉冲功能对气孔缺陷的控制有直接影响。其中,使用脉冲功能补焊,气孔抑制效果最明显,最终可形成符合标准要求的焊接接头。 |
关键词: 电子束焊接;焊缝气孔;多层波纹管;脉冲功能 |
基金项目: |
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Control of Porosity Defects in Electron Beam Welding of Multi-layer Bellows |
Cai Jingqing Fang Dongqing Guo Shengbin Bai Chun Zhang Lina Wang Wei Gu Wenbo
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Capital Aerospace Machinery Co., Ltd., Beijing 100076
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Abstract: |
In this paper, based on the problem of porosity defects in electron beam welding of multi-layer GH4169 bellows assembly, the process optimization experiment was carried out and the microstructure of porosity defects was analyzed. The results of research shows that reducing welding speed and adding scanning function or pulse function have direct influence on the control of porosity defects. Among them, the porosity inhibition effect is the most obvious and finally the welding joint meeting the requirements can be formed when pulse function is used for repair welding. |
Key words: electron beam welding;weld porosity;multi-layer bellows;pulse function |