摘要
针对轮芯铸件的结构特点,采用消失模铸造工艺,利用ProCAST数值模拟软件模拟分析了轮芯大法兰面朝下放置时的凝固过程。模拟结果显示,铸件厚大部位处存在严重的缩孔缩松缺陷,与试制生产结果相吻合。针对出现的缩孔缩松缺陷,将轮芯铸件由法兰面朝下改为朝上放置,使缩孔缩松缺陷得到显著减轻。进一步对铸造工艺方案进行优化,在内、外法兰处放置冷铁,并将法兰水平端面改为30°斜面。模拟结果表明,优化后铸件内部缩孔缩松缺陷得到完全消除,并确定了最佳工艺方案。
According to the structural characteristics of wheel core casting, the lost foam casting solidification process with the large flange of the wheel core placed downward is simulated and analyzed by using the numerical simulation software ProCAST. The simulation results show that there are serious shrinkage cavity and porosity defects in the thick part of the casting, which is in good agreement with the trial production result. In view of the shrinkage cavity and porosity defects,the flange of casting is placed upward instead of downward so that the shrinkage cavity and porosity defects are significantly reduced. The casting process scheme was further optimized by placing cold iron at the inner and outer flanges and changing the horizontal end face of the flange to a 30° inclined plane. The simulation results show that the shrinkage cavity and porosity defects in the casting are eliminated thoroughly based on the optimized process, which is the best process scheme.
作者
杨芬芬
李振彦
颜文羽
陈君逸
潘源
YANG Fenfen;LIZhenyan;YAN Wenyu;CHEN Junyi;PAN Yuan(College of Engineering and Technology,Zunyi Normal University,Zunyi 563006,China)
出处
《铸造技术》
CAS
2022年第10期906-911,共6页
Foundry Technology
基金
遵义市科技计划项目(遵市科合HZ字(2021)213号)
国家自然科学基金(52101062)
遵义师范学院博士基金(遵师BS[2020]6号)。
关键词
轮芯
消失模铸造
工艺优化
缩孔缩松
碳渣
wheel core
lost foam casting
process optimization
shrinkage cavity and porosity
carbon slag
作者简介
杨芬芬(1988-),博士,讲师.研究方向:合金凝固行为电磁调控及腐蚀机理等.电话:17784823932,Email:yangfen0515@163.com;通讯作者:李振彦(1985-),硕士,讲师.研究方向:金属液态成型技术研究.电话:19185166420,Email:lizhenyan888@163.com。
