| Relationship between sound signal and weld pool status in plasma arc welding |
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| 引用本文： | 王耀文,陈强,孙振国,孙久文. Relationship between sound signal and weld pool status in plasma arc welding[J]. 中国有色金属学会会刊, 2001, 0(1) |
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| 作者姓名： | 王耀文 陈强 孙振国 孙久文 |
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| 作者单位： | Department of Mechanical Engineering，Tsinghua University，Beijing 100084，P.R.China |
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| 基金项目： | Project (9913 -0 2 )supportedbytheNationalAdvancedMaterialsCommittee，project (5 9975 0 5 0 )supportedbytheNationalNaturalSci |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＰｌａｓｍａａｒｃｗｅｌｄｉｎｇ (ＰＡＷ )ｉｓｃｈａｒａｃｔｅｒｉｚｅｄｂｙｅａｓｙｏｐｅｒａｔｉｏｎａｎｄｌｏｗｃｏｓｔａｍｏｎｇｔｈｅｈｉｇｈ ｅｎｅｒｇｙ ｄｅｎｓｉｔｙ ｂｅａｍ ｐｒｏｃｅｓｓｉｎｇｔｅｃｈｎｉｑｕｅｓ (ｆｏｒｅｘａｍｐｌｅ ,ｅｌｅｃｔｒｏｎｂｅａｍ ,ｌａｓｅｒａｎｄ ｐｌａｓｍａ) .ＰＡＷｉｓｗｉｄｅｌｙｕｓｅｄｉｎｗｅｌｄｉｎｇｏｆｓｔａｉｎｌｅｓｓｓｔｅｅｌ,ｈｉｇｈ ｎｉｃｋｅｌａｌｌｏｙｓ ,ｃａｒｂｏｎｓｔｅｅｌ,ｃｏｐｐｅｒ ,ｃｏｐｐｅｒ …
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Relationship between sound signal and weld pool status in plasma arc welding |
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| WANG Yao wen,CHEN Qiang,SUN Zhen guo,SUN Jiu wen. Relationship between sound signal and weld pool status in plasma arc welding[J]. Transactions of Nonferrous Metals Society of China, 2001, 0(1) |
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| Authors: | WANG Yao wen CHEN Qiang SUN Zhen guo SUN Jiu wen |
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| Abstract: | The sound features of the weld pool status in plasma arc welding were systematically investigated after the sound signal was collected with a microphone. The results show that it is difficult to extract information about the weld pool status directly in time domain although the sound signal varies with the weld pool behaviors to some extent. The frequency spectra of the sound signal contain plenty of information about the weld pool behaviors. It is shown from the analysis of the sound generation mechanism that the sound signal of plasma arc welding is mainly caused by the weld pool oscillation, the power source fluctuation and so on. R S algorithm is designed to determine the weld pool status, and it is able to offer the feedback information for the closed loop control of the penetration quality of plasma arc welding. [ |
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| Keywords: | plasma arc welding weld pool status sound feature application |
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