| X80钢多层焊温度分布对残余应力的影响研究 |
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| 引用本文： | 白芳,童莉葛,丁红胜,潘礼庆.X80钢多层焊温度分布对残余应力的影响研究[J].工程热物理学报,2019,40(4):931-937. |
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| 作者姓名： | 白芳 童莉葛 丁红胜 潘礼庆 |
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| 作者单位： | 北京科技大学数理学院,北京100083;中国石油管道局工程有限公司管道学院,廊坊065000;北京科技大学能源与环境工程学院,北京,100083;北京科技大学数理学院,北京,100083;三峡大学理学院,宜昌,443002 |
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| 基金项目： | 国家重点研发计划;国家自然科学基金;中央高校基本科研业务费专项 |
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| 摘 要： | 试验表明,自保护药芯焊丝半自动摆焊焊缝区残余应力分布较复杂,这种复杂性与焊缝各焊层所经历的热循环差异有关,从而影响各焊层的残余应力分布.本文采用SYSWELD焊接模拟软件模拟摆焊半自动焊接工艺热循环曲线,与实验的相对误差范围为1.2%～7.3%。结果表明:峰值温度随着热源与焊缝中心距离增加而减小,冷却时间t8/5、t8/3和t6/3随距离热源从3.0 mm变化至5.1 mm,模拟结果分别增加了1.5 s、5.5 s和6.3 s;摆焊焊接试板横向残余应力在整个焊接过程中变化较大,而纵向残余应力变化不明显;随着焊接层数增加,焊缝中心表面横向和纵向的残余应力存在较大减小,焊缝中心表面横向残余应力降低了300 MPa,纵向残余应力降低了310 MPa。
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| 关 键 词： | 摆焊 管线钢 热循环 残余应力 实验 |
Influence of Temperature Distribution to Residual Stress of Multi-layer Welding of Semi-automatic Swing Welding in X80 Steel |
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| BAI Fang,TONG Li-Ge,DING Hong-Sheng,PAN Li-Qing.Influence of Temperature Distribution to Residual Stress of Multi-layer Welding of Semi-automatic Swing Welding in X80 Steel[J].Journal of Engineering Thermophysics,2019,40(4):931-937. |
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| Authors: | BAI Fang TONG Li-Ge DING Hong-Sheng PAN Li-Qing |
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| Institution: | (School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China;School of Energy and Environmental Engineering,University of Science and Technology Beijing, Beijing 100083,China;College of Science,China Three Gorges University,Yichang 443002,China;Pipeline Institute,China Petroleum Pipeline Engineering CO.,LTD,Langfang 065000,China) |
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| Abstract: | BAI Fang;TONG Li-Ge;DING Hong-Sheng;PAN Li-Qing(School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China;School of Energy and Environmental Engineering,University of Science and Technology Beijing, Beijing 100083,China;College of Science,China Three Gorges University,Yichang 443002,China;Pipeline Institute,China Petroleum Pipeline Engineering CO.,LTD,Langfang 065000,China) |
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| Keywords: | swing welding pipeline steel thermal cycle residual stress experiment |
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