| 搅拌摩擦焊过程搅拌针切面轮廓分析 |
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| 引用本文： | 赵华夏,孟强,董继红,董春林.搅拌摩擦焊过程搅拌针切面轮廓分析[J].焊接学报,2014,35(11):71-74,78. |
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| 作者姓名： | 赵华夏 孟强 董继红 董春林 |
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| 作者单位： | 中国航空工业集团公司北京航空制造工程研究所,北京,100024 |
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| 摘 要： | 基于搅拌摩擦焊接过程"切面分析法",建立了搅拌针切面轮廓特征点运动行为数学表达式,并在数学分析的基础上提出了"界面畸变"、"冷搭接"、"洋葱环结构"等搅拌摩擦焊接头特征的产生机制.基于上述研究结果,提出了一种搅拌针形貌优化思路,从改善塑性金属迁移行为的角度,通过三切面设计,有效消除了大厚度铝合金搅拌摩擦焊对接接头中的"S"线,以及筋板搭接接头中的"冷搭接"缺陷,研究工作为搅拌摩擦焊产品的研制提供了技术支持.
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| 关 键 词： | 搅拌摩擦焊 切面分析 界面畸变 冷搭接缺陷 |
| 收稿时间： | 2014/7/30 0:00:00 |
Section contour analysis of probe during friction stir welding |
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| ZHAO Huaxi,MENG Qiang,DONG Jihong and DONG Chunlin.Section contour analysis of probe during friction stir welding[J].Transactions of The China Welding Institution,2014,35(11):71-74,78. |
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| Authors: | ZHAO Huaxi MENG Qiang DONG Jihong and DONG Chunlin |
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| Affiliation: | Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China,Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China,Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China and Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China |
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| Abstract: | Based on the section analysis of three-dimensional model of friction stir welding, the moving expressions about feature points on section contour of probe were established.According to the basis of mathematical analysis, the forming mechanisms of hook, cold overlap-defect and onion structure were revealed. In the light of the above research results, the optimization idea of probe shape was proposed. Considering improving plastic metal migration behavior, the s-line of large thickness aluminum alloy friction stir welded butt joint and cold overlap-defect in lap joint of stringer and plate was effectively eliminated by three aspects design. The results provide technical support for the development of friction stir welded products. |
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| Keywords: | friction stir welding section analysis hook cold overlap-defect |
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