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水轮机转轮焊接残余应力研究

Research of Welding Residual Stress of Francis Turbine Runner

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【Author】 LI Yafan,SONG Dan,JI Shude,GAO Xiuling,LIU Xuesong,FANG Hongyuan(1.Harbin Electric Power Equipment Company Limited,Harbin 150040,China;2.School of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;3.Harbin Institute of Large Electrical Machinery,Harbin 150040,China;4.State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology,Harbin 150001,China)

【机构】哈尔滨电气动力装备有限公司；沈阳航空工业学院；哈尔滨大电机研究所；哈尔滨工业大学现代焊接生产技术国家重点实验室；

【摘要】本文对数值模拟计算优化后的焊接工艺进行了真机转轮焊接及试验验证,验证结果表明:采用局部加热法,如果加热温度,加热时间及加热区域选择适当,可以大大地降低叶片危险区域残余拉应力,从而有效地降低转轮开裂风险。更多还原

【Abstract】 Process of welding which is optimized by means of numerical simulation is verified during welding and testing.The results show that welding residual tensile peaking stress in dangerous area of blades can be decreased greatly by local heating if choice of heating temperature,heating time and heating location are appropriate,furthermore,cracking risk of the runner can be decreased obviously.更多还原

【关键词】水轮机转轮；局部加热；焊接；残余应力；
【Key words】 turbine runner； local heating； welding； residual stress；

【文献出处】大电机技术 ,Large Electric Machine and Hydraulic Turbine , 编辑部邮箱 ,2013年03期
【分类号】TK730.1
【被引频次】2
【下载频次】104

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