| 局部加热法对水轮机转轮焊接残余应力的影响 |
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| 引用本文： | 李雅范,姬书得,张利国,刘雪松,方洪渊.局部加热法对水轮机转轮焊接残余应力的影响[J].大电机技术,2011(3):39-41,49. |
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| 作者姓名： | 李雅范 姬书得 张利国 刘雪松 方洪渊 |
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| 作者单位： | 李雅范,LI Ya-fan(哈尔滨电机厂交直流电机有限责任公司,哈尔滨,150040);姬书得,张利国,JI Shu-de,ZHANG Li-guo(沈阳航空航天大学,航空宇航学院,沈阳,110136);刘雪松,方洪渊,LIU Xue-song,FANG Hong-yuan(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： | 针对混流式水轮机转轮在服役过程中出现裂纹的情况,利用数值模拟技术研究了局部加热法对转轮焊接残余应力的影响,得到了叶片危险区域的焊接应力在局部加热过程中的变化情况以及转轮局部加热的优化方案.结果表明,局部加热法在增加了加热区域焊接残余拉应力的同时,大大降低了叶片危险区域焊接残余拉应力峰值.在局部加热的过程中,叶片危险区域...
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| 关 键 词： | 叶片 局部加热 焊接 残余应力 |
Influence of Local Heating on Welding Residual Stress of Francis Turbine Runner |
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| LI Ya-fan,JI Shu-de,ZHANG Li-guo,LIU Xue-song,FANG Hong-yuan.Influence of Local Heating on Welding Residual Stress of Francis Turbine Runner[J].Large Electric Machine and Hydraulic Turbine,2011(3):39-41,49. |
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| Authors: | LI Ya-fan JI Shu-de ZHANG Li-guo LIU Xue-song FANG Hong-yuan |
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| Affiliation: | LI Ya-fan1,JI Shu-de2,ZHANG Li-guo2,LIU Xue-song3,FANG Hong-yuan3(1.Harbin Electric Machinery AC-DC Motor Company Limited,Harbin 150040,China,2.School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,3.State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | For cracking problem on Francis turbine in the running process,influence of local heating on welding residual stress of the runner is studied,and changing trend of welding residual stress in the dangerous area of blades in the process of welding and optimizing project of local heating of runners have been gained by means of numerical simulation.The results show that welding residual tensile stress in the heating area can be increased by local heating,at the same time welding residual tensile peaking stress ... |
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| Keywords: | blade local heating welding residual stress |
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