Casting Process Design and Defect Prediction of SiCp/A356 Brake Disc
Author of the article:ZHAO Haiqin;YANG Zhiyong;ZHANG Xiongfei;WANG Chaotao;HAN Jianmin
Author's Workplace：CRRC Qingdao Sifang Corporation Limited, Qingdao 266111, China;School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
Key Words：SiCp/A356 brake disc vacuum adjustable pressure casting forming process numerical simulation
Abstract：
SiCp/A356 composite brake discs have outstanding advantages such as light weight, low noise, long life, etc., and it has broad application prospects in the basic braking system of urban rail trains. However, the castability of SiCp/A356 composites materials are poor, and pores, shrinkage porosity and crack defects are easily formed in the forming process. The metal mold vacuum pressure regulating forming process of the brake disc was simulated and analyzed by using ProCAST solidification simulation software. The results show that based on the results of flow field, shrinkage cavity and porosity, solidification time and solid phase ratio, the design of casting system and casting process parameters with good forming quality inside the brake disc are determined, and SiCp/A356 brake disc with good internal quality is prepared.
