机床铸件铸孔R角裂纹的预判方法  

Cast Hole R Angle Crack Prediction Method of Machine Tool Casting

作　　者：周照峰 靳存文 许涛 ZHOU Zhao-feng;JIN Cun-wen;XU Tao(Henan Golden Sun Precision Casting Co.,Ltd.,Xinxiang 453200,China)

机构地区：[1]河南省金太阳精密铸业股份有限公司,河南新乡453200

出　　处：《现代铸铁》2023年第2期32-36,共5页Modern Cast Iron

摘　　要：介绍了一种通过分析CAE凝固模拟的温度场色谱分布预判机床铸件铸孔R角裂纹产生部位的方法,详细阐述了该裂纹预判方法的分析推断和实例验证过程:通过采用优化铸孔R角尺寸,使筋板上R角周围温度场具有相对较小的温度梯度,运用CAE软件对优化方案进行凝固模拟确认,确保改善措施应用效果,经生产验证,该方法具有较高的准确性。将此裂纹预判方法推广应用到机床立柱新产品开发上,结果显示模拟预测结果与实际裂纹吻合。A method to predict the R-angle crack generation site of the machine tool casting hole by analyzing the temperature field chromatographic distribution of CAE solidification simulation was introduced.The analysis and inference and example verification process of the crack prediction method was described in detail:by optimizing the R angle size of the cast hole,the temperature field around the R angle on the reinforcement plate to have a relatively small temperature gradient,and to ensure the application effect of the improvement measures.Conduct the solidification simulation confirmation with CAE software to ensure the application effect of improvement measure.The production validation showed that the proposed method had a high accuracy.The crack prediction method was applied to the development of new products of the machine tool column,and the results showed that the simulation prediction results coincide with the actual crack.

关 键 词：机床铸件 裂纹 凝固模拟 铸孔R角 

分 类 号：TG245[金属学及工艺—铸造]