A Mathematical Model for Predicting Shrinkage Defect of Ductile Iron Castings

作     者：ZhiqiangHan Junyi Su Kaike Cai Metallurgy School, University of Science and Technology Beijing, Beijing 100083, China Xi’an Jiaotong University, Xi’an 710049, China 

作者机构：Metallurgy School University of Science and Technology Beijing Beijing 100083 China Xi'an Jiaotong University Xi'an 710049 China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2000年第14卷第1期

页      面：24-29页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the Chinese National Education Foundation for Doctoral Degree 

主　　题：ductile iron casting shrinkage defect mold cavity enlargement mathematical model 

摘      要：The shrinkage defect of a ductile iron casting is attributed to the volume variations occurring in solidification, which consist of liquid contraction, solidification shrinkage, graphitization expansion, and mold cavity enlargement. Based on this understanding, a mathematical model for predicting the shrinkage defect of the casting is developed, in which the volume variations of the casting in soli- dification are numerically simulated, especially, the mold cavity enlargement is quantitatively calculated. Moreover, the reliability of the model is verified in production and experiment.