| The mechanical measuring method of welding heat source efficiency |
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| 作者姓名： | 张建强 张国栋 何洁 王承权 陈冰泉 |
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| 作者单位： | [1]Department of Material Engineering, Wuhan University, Wuhan, 430072 [2]Wuhan University of Science and Technology, Wuhan, 430063 |
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| 摘 要： | Based on the principle of residual deformation induced by superposition of the welding residual stress and working stress, the welding heat source efficiency has been determined by measuring displacement changes of specimens under loading and unloading in tensile tests, and combining with calculating welding parameters. Meanwhile, the welding heat source eficiencies obtained are compared with those of the measuring-calculating method. The research results show that the welding heat source efficiencies are almost the same as those obtained by the measuring-calculating method. Therefore, the welding heat source efficiency can be determined accurately by this method, and a new determining method of the heat source efficiency for the welding heat process calculating has been provided.
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| 关 键 词： | 焊接热源效率 焊接应力 焊接变形 机械测量分析 |
The mechanical measuring method of welding heat source efficiency |
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| Zhang Jianqiang,Zhang Guodong,He Jie,Wang Chengquan,Chen Bingquan.The mechanical measuring method of welding heat source efficiency[J].China Welding,2007,16(4):51-55. |
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| Authors: | Zhang Jianqiang Zhang Guodong He Jie Wang Chengquan Chen Bingquan |
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| Affiliation: | 1. Department of Material Engineering, Wuhan University, Wuhan, 430072
2. Wuhan University of Science and Technology, Wuhan, 430063 |
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| Abstract: | Based on the principle of residual deformation induced by superposition of the welding residual stress and working stress, the welding heat source efficiency has been determined by measuring displacement changes of specimens under loading and unloading in tensile tests, and combining with calculating welding parameters. Meanwhile, the welding heat source eficiencies obtained are compared with those of the measuring-calculating method. The research results show that the welding heat source efficiencies are almost the same as those obtained by the measuring-calculating method. Therefore, the welding heat source efficiency can be determined accurately by this method, and a new determining method of the heat source efficiency for the welding heat process calculating has been provided. |
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| Keywords: | welding heat source efficiency welding stress welding distortion mechanical measuring-calculating method |
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