基于计算机模拟的消失模铸造充填特性研究.PDFVIP

基于计算机模拟的消失模铸造充填特性研究 1,2 1 3 1,2 张立强 ，卢远志，张楚惠，刘金水 （1.湖南大学汽车车身先进设计与制造国家重点实验室，湖南长沙，410082 2.湖南大学材料科学与工程学院，湖南长沙，410082 3.湖南基特制造有限公司，湖南湘阴，410502 ） 摘要：通过计算机仿真软件ProCAST对某公司车身覆盖件修边冲孔模上模座的消失模铸造充型过程进行数值模拟，研究了消 失模铸造的充填特性，并对比分析了消失模铸造和传统空腔铸造充型过程的差异。模拟结果表明：消失模铸造存在着与传统空 腔铸造截然不同的充型过程，由于泡沫介质的存在，使金属液充型受阻，充型时间长，并且充型速度呈现周期性交替变化。 关键词：消失模铸造；数值模拟；充填特性；充型速度 中图分类号：TG249.6 文献标识码：A 文章编号： 库 Research on the Filling Characteristics of EPC based on the Computer Simulation 例 1,2 1 3 1,2 ZHANG Li-qiang , LU Yuan-zhi , ZHANG Chu-hui , LIU Jin-shui (1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Hunan University), Changsha, 410082, Hunan, China; 2.School of Materials Science Engineering, Hunan University, Changsha, 410082, Hunan, China; 案 3.Hunan Jite Manufacturing Co., Ltd, Xiangyin, 410502, Hunan, China) E Abstract : The filling process of EPC (Evaporated Pattern Casting) are simulated in this paper by using the computer A simulation software to study the filling process of EPC. In order to study the filling characteristcs of EPC better, the comparation of the filling process of the traditional vacant casting have been also simulated at the same conditions. The C simulation results show that the filling process of EPC is different entirely from the traditional vacant casting. The filling velocity becomes slow and varies periodically b