磨球残余应力的数值模拟及分析
Simulation and Analysis of Residual Stress of Grinding Balls
袁允社1, 张小博2
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作者单位:1. 江苏信息职业技术学院,江苏 无锡 214153; 2. 上海宝钢集团公司,上海 200122
中文关键字:残余应力;数值模拟
英文关键字:residual stress; simulation
中文摘要:通过铸造数值模拟软件ProCAST模拟了磨球铸态下的残余应力分布情况,同时通过X射线衍射仪,测定了热处理后磨球试样上应力分布状态。结果表明,磨球金属型部位先凝固,砂型部位后凝固,磨球内部组织致密、无缺陷;铸态下在磨球内有大量的残余应力,热处理后可以消除一定的铸造残余应力,但仍有大量残余应力存在。
英文摘要:The distribution of residual stress of grinding balls in casting condition was simulated based on the software ProCAST. The stress distribution after heat treating was determined by X-ray diffraction instrument. The results indicate that grinding balls in the metal mould solidify first and then in the sand mould, and the interior structures of grinding balls are compact; there is mass of residual stress in the grinding ball in cast condition, although a definite residual stress can be eliminated after heat treating, an amount of stress still exists.