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
点击：3575次 下载：0次
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.