Application of Numerical Simulation Technique to Casting Process of Valve Block
MI Guo��fa1,LIU Xiang��yu2,WANG Kuang��fei1,FU Heng��zhi1
1. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China; 2. Department of Mechanical Engineering, Chengde Petroleum College, Chengde 067000, Hebei, China
Application of Numerical Simulation Technique to Casting Process of Valve Block
MI Guo��fa1,LIU Xiang��yu2,WANG Kuang��fei1,FU Heng��zhi1
1. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China; 2. Department of Mechanical Engineering, Chengde Petroleum College, Chengde 067000, Hebei, China
ժҪ The numerical simulation technique was applied to the casting process of a valve��type part. The mold��filling and solidification stages of the casting were numerically analyzed. The filling behavior, solidification sequence, and thermal stress distribution were reproduced and the possible defects, such as cold shut and shrinkage, were predicted. Based on the simulation result, the double��gating system was replaced by a single��gating system. Meanwhile, the chills were used to regulate the solidification sequence of casting. To eliminate the cracks in the casting, the sand core was converted into a canulate one. By modifying the original process, the defects were eliminated and the casting with good quality was obtained.
Abstract��The numerical simulation technique was applied to the casting process of a valve��type part. The mold��filling and solidification stages of the casting were numerically analyzed. The filling behavior, solidification sequence, and thermal stress distribution were reproduced and the possible defects, such as cold shut and shrinkage, were predicted. Based on the simulation result, the double��gating system was replaced by a single��gating system. Meanwhile, the chills were used to regulate the solidification sequence of casting. To eliminate the cracks in the casting, the sand core was converted into a canulate one. By modifying the original process, the defects were eliminated and the casting with good quality was obtained.
MI Guo��fa;LIU Xiang��yu;WANG Kuang��fei;FU Heng��zhi. Application of Numerical Simulation Technique to Casting Process of Valve Block[J]. �й������ڿ���, 2009, 16(4): 12-0.
MI Guo��fa;LIU Xiang��yu;WANG Kuang��fei;FU Heng��zhi. Application of Numerical Simulation Technique to Casting Process of Valve Block. Chinese Journal of Iron and Steel, 2009, 16(4): 12-0.
2009, Vol. 16 
