摘要
针对压壳进行铸造工艺设计、仿真及优化,使用ProCAST软件分别对初始设计和两种方案进行初步模拟,分析充型过程的模拟结果、缺陷分布,确定中注式浇注方案较优。模拟结果显示,中注式浇注方案充型完成时长为3.99 s,在法兰盘底部和铸件心部存在缩孔、缩松缺陷,主要与凝固温度场分布不均及得不到及时补缩有关,需进一步优化该工艺。在铸件法兰处开设一个明冒口进行补缩,3个发热冒口用于改善温度场。最终模拟结果表明,优化工艺显著改善温度场分布、调节凝固顺序并减少了缺陷,保证铸件有较高的工艺出品率。
The casting process for the shell-pressing was designed, simulated and optimized. Two kinds of gating systems were initially designed. ProCAST software was used to simulate the filling process, defect distribution and process improvement. According to the simulated results, the mid-pouring gating system was adopted. The simulated results reveal that the process of the mid-pouring gating system is completed after 3.99 s. Shrinkage holes and porosity defects at the bottom of the flange and the core of the casting can be observed, which are mainly related to the uneven distribution of the solidification field and the failure to obtain timely feeding. The process needed to be further optimized. An open riser is set at the flange of the casting for feeding, and three heating risers are used to improve the temperature field. In the final simulation results, the optimized process significantly improves the temperature field distribution, adjusts the solidification sequence and reduces defects, ensuring a higher process yield rate of castings.
作者
张孝元
王孝国
杨光印
Zhang Xiaoyuan;Wang Xiaoguo;Yang Guangyin(School of Intelligent Engineering,Jinzhong College of Information;College of Agricultural Engineering,Shanxi Agricultural University;Flowserve Fluid Control Co.,Ltd.)
出处
《特种铸造及有色合金》
CAS
北大核心
2022年第7期823-826,共4页
Special Casting & Nonferrous Alloys
基金
山西省优秀博士来晋工作奖励资金科研资助项目(SXBYKY2021021)
关键词
压壳
铸造工艺设计
铸造工艺模拟
优化
Shell-pressing
Casting Process Design
Casting Process Simulation
Optimization
作者简介
第一作者:张孝元,男,1986年出生,讲师,山西晋中(030800),E-mail:329369587@qq.com;通信作者:王孝国,男,1985年出生,讲师,山西晋中(030800),E-mail:wxg315550@163.com
