【作者】 盖登宇； 王世滨； 李庆芬； 张继红；

【Author】 GAI Deng-yu WANG Shi-bin LI Qing-fen ZHANG Ji-hong (1.Material Science and Chemical Engineering College,Harbin Engineering University,Harbin 150001,China;2.Machinery and Electrical College,Harbin Engineering University,Harbin 150001,China;3.Daqing Refine & Chemical Company,Daqing 163411,China)

【机构】 哈尔滨工程大学材料与化工学院； 哈尔滨工程大学机电学院； 中国石油大庆炼化公司设备处；

【摘要】 针对大型混流式水轮机转轮叶片形状复杂、铸造过程中变形量难以预测和控制的问题,通过计算机模拟叶片凝固过程,对凝固过程中应力场进行仿真计算,并预测叶片凝固中的变形量。对比模拟结果与实际测量叶片的变形量,结果说明数值模拟能正确反映叶片铸件变形规律,误差在工程允许范围内。模拟计算为叶片木模生产所要预加的工艺反变形量提供了有效的数值分析依据。更多还原

【Abstract】 For the complex shape of large hydraulic turbine blade,the deformation control during casting process is very difficult.The process of blade solidification was simulated.The deformation was predicted by analyzing stress field during the process of solidification.The comparison between simulated deformation and actural one reveals that numerical simulation can reflect the rule of deformation and the error is in the range of allowing.Numerical analysis can offer a theoretical foundation for adding reversible deformation before making blade’s wooden model.更多还原