Casting Process Design and Optimization of a Special Automobile Hinge

Author of the article:MA Jing 1,2 , FAN Shixi 1,2 , CUI Xinpeng 1,2 , LI Feng 1,2 , SHI Yueliang 1,2

Author's Workplace：1. Biamtec Material Co., Ltd., Beijing 100094, China; 2. Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology, Beijing 100000, China

Key Words：ProCAST; precision casting; titanium alloy; simulation; shrinkage cavity

Abstract： Hinged parts are the key components of special vehicles. During the casting process, large shrinkage holes always appear at the root of the hinged parts, which seriously affects the quality of the castings. In this paper, based on ProCAST software, a simulation model of the casting forming of the hinged part was established, the filling and solidification process of the hinged part was analysed, and the influence of the risers with different sizes and shapes on the distribution of the shrinkage cavity of the hinged part was studied. The results show that the shape riser has the greatest influence on the extraction of shrinkage holes of hinged parts. The shrinkage holes are reduced by 94.8% compared with the initial process, and the shrinkage holes at the root of the casting are reduced from 2.11 cm 3 to 0.11 cm 3 . The detected hole defects are consistent with the simulation results, which can provide guidance for subsequent actual production.