| 动态低应力小变形无势裂随焊锤击焊接技术研究 |
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| 引用本文： | 徐文立,黎明,等.动态低应力小变形无势裂随焊锤击焊接技术研究[J].材料科学与工艺,2001,9(1):6-10. |
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| 作者姓名： | 徐文立 黎明 |
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| 作者单位： | [1]哈尔滨工业大学材料科学与工程学院，黑龙江哈尔滨1500 [2]哈尔滨工业大学材料科学与工程 |
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| 基金项目： | 总装备部科研项目，18.8.4②， |
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| 摘 要： | 从力学角度出发，首次提出随焊锤击的焊接技术，并结合跨焊缝两侧横向位移的测量及显微组织的研究，分析了随焊锤击防止焊接裂纹的作用机理，试验结果表明，随焊狂击技术可显著地改善焊缝显微组织及残余应力分布，防止焊接热裂纹的产生，并能够有效地控制LY12CZ铝合金薄板焊接横向及纵向收缩变形，可以认为随焊锤击是一种更合理，更具实用价值的低应力小变形无热裂的焊接技术新方法。
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| 关 键 词： | 随焊锤击 热裂纹 扫描电镜 残余应力 焊接变形 焊接技术 |
| 文章编号： | 1005-0299(2001)01-0006-05 |
Dynamic low stress-little distortion-hot crackfree welding technology by trailing peening |
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| XU Wen li,LI Ming,LIU Xue song,TIAN Xi tang.Dynamic low stress-little distortion-hot crackfree welding technology by trailing peening[J].Materials Science and Technology,2001,9(1):6-10. |
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| Authors: | XU Wen li LI Ming LIU Xue song TIAN Xi tang |
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| Abstract: | From the mechanical viewpoint of preventing welding hot cracking, a new welding technology - trailing peening was applied for the first time in the study. The mechanism of trailing peening on welding hot cracking susceptibility was investigated in combination with the measurement of transverse displacement across the weld and examination of microstructure. The experimental results show that welding with trailing peening not only can improve the microstructure of welds and distribution of residual stress obviously, but also prevent welding hot cracking and control longitudinal or transverse shrinkage effectively. So, trailing peening can be regarded as an effective and feasible method for controlling welding stress and distortion and preventing hot cracking of the joints. |
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| Keywords: | welding with trailing peening hot cracking SEM residual stress welding distortion |
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