| 钛合金胶接点焊接头的性能检测 |
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| 引用本文： | 张龙,曾凯,何晓聪,孙鑫宇,邢保英.钛合金胶接点焊接头的性能检测[J].宇航材料工艺,2016,46(6):64-67. |
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| 作者姓名： | 张龙 曾凯 何晓聪 孙鑫宇 邢保英 |
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| 作者单位： | 昆明理工大学机电工程学院,昆明 650500,昆明理工大学机电工程学院,昆明 650500,昆明理工大学机电工程学院,昆明 650500,昆明理工大学机电工程学院,昆明 650500,昆明理工大学机电工程学院,昆明 650500 |
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| 基金项目： | 国家自然科学基金资助(51565022；51565023) |
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| 摘 要： | 研究了不同焊接电流下钛合金板胶接点焊接头的A扫描信号和C扫描图像特征,并进行了拉伸-剪切试验。结果表明:通过观察C扫描图像的特征与A扫描信号的变化,能够划分胶接点焊接头的胶层区、热影响区、熔合区、熔核区以及焊接缺陷;随着电流(7~10 k A)的逐渐增大,接头熔核直径呈递增趋势,相应的失效载荷从7 231.5增加到10 939.0 N;当电流为7 k A时,在C扫描图像上反映出飞溅缺陷,此时接头失效载荷远小于没有出现飞溅的接头,可见飞溅降低了胶接点焊接头的拉剪载荷。
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| 关 键 词： | 胶接点焊 焊接电流 A扫描信号 C扫描图像 |
| 收稿时间： | 2016/1/6 0:00:00 |
| 修稿时间： | 2016/1/6 0:00:00 |
Performance Detection of Spot Weld Bonding Joints for Titanium Alloy |
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| ZHANG Long,ZENG Kai,HE Xiaocong,SUN Xinyu and XING Baoying.Performance Detection of Spot Weld Bonding Joints for Titanium Alloy[J].Aerospace Materials & Technology,2016,46(6):64-67. |
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| Authors: | ZHANG Long ZENG Kai HE Xiaocong SUN Xinyu and XING Baoying |
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| Institution: | Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500 and Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500 |
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| Abstract: | The quality of spot weld bonding in titanium alloy sheet metal was tested by using ultrasonic C-scan method. The specifics of the A-scan signals and the C-scan images were researched under different welding current. The tensile-shear tests were carried out to test the mechanical behavior of spot weld bonding.Results show that the characteristics of C-scan image and the change A-scan signal can divide adhesive, heat effected zone, melting area, nugget zone and weld defects. The nugget diameters of sport weld bonding increase with the increase of welding current, and the failure load average increase from 7 231.5 N to 10 939.0 N. When the current is 7 kA, it can get the information which includes splash and other weld defects from the ultrasonic C-scan image. The failure strength is less than the normal joints. The splash reduces the tensile shear load of the spot weld bonding joints. |
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| Keywords: | Spot weld bonding Welding current A-scan signals C-scan images |
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