| 薄钢板点焊接头超声信号分析 |
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| 引用本文： | 赵新玉,刚铁,袁媛. 薄钢板点焊接头超声信号分析[J]. 焊接学报, 2005, 26(11): 101-105 |
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| 作者姓名： | 赵新玉 刚铁 袁媛 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 |
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| 摘 要： | 采用水浸超声聚焦直入射法对镀锌薄钢板点焊接头进行了质量评价。详细分析了点焊接头的A扫描信号、B扫描及C扫描图像特征，探讨了沿焊核直径B扫描评价焊点质量方法的可行性。研究结果表明，采用这种方法不但可以定性评价虚焊接头与完好接头，还可以定量计算出上下表面压痕深度及熔核直径。对比沿焊核直径B扫描图像与横截面的金相图像，两者吻合较好，证实了检测结果的准确性。
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| 关 键 词： | 超声检测 水浸聚焦 电阻点焊 |
| 文章编号： | 0253-360X（2005）11-101-05 |
| 收稿时间： | 2005-09-01 |
| 修稿时间： | 2005-09-01 |
Ultrasonic signal analyses of spot welds in thin steel sheet |
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| ZHAOXin-yu,GANG Tie and YUAN Yuan. Ultrasonic signal analyses of spot welds in thin steel sheet[J]. Transactions of The China Welding Institution, 2005, 26(11): 101-105 |
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| Authors: | ZHAOXin-yu GANG Tie YUAN Yuan |
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| Affiliation: | State key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and State key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The quality of spot welds in galvanized sheet metal was evaluated by using ultrasonic water immersion focusing method. The A-scan signal, B- and C-scan image features of spot welds were analyzed. The feasibility of evaluating the quality of spot welds by using the B-scan image was provided. By using the method, not only the kiss bonding and the perfect joint could be evaluated qualitatively, but also the pressure mark depth of the upper-bottom surface and the spot weld diameter could be calculated quantitatively. The accuracy of testing result was verified by contrasting the metallographs of actual spot welds cross section. |
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| Keywords: | ultrasonic test water immersion focusing resistance spot weld |
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