轴承机匣熔模精铸过程模拟  

Simulation of Investment Casting Process for Bearing Housing Casting

作　　者：胡玥 雷四雄 胡兵 周坚 芦刚 HU Yue;LEI Sixiong;HU Bing;ZHOU Jian;LU Gang(AECC South Industry Co,Ltd,Zhuzhou 412002,China;National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]中国航发南方工业有限公司,湖南株洲412002 [2]南昌航空大学轻合金加工科学与技术国防重点学科实验室,江西南昌330063

出　　处：《铸造技术》2020年第7期672-676,共5页Foundry Technology

摘　　要：对轴承机匣铸件进行熔模铸造工艺方案设计,并采用Procast数值模拟软件模拟了铸件的充型凝固过程,观察了凝固场及金属液流态的变化情况,预测了疏松缩孔缺陷存在的位置。根据模拟结果,提出铸件优化工艺方案。结果表明,优化后的工艺方案,其充型过程金属液流态平稳,合理的放置冒口及控制冒口尺寸可增大有效补缩距离,减少缺陷,并通过模拟与试验的论证,获取高质量铸件。The investment casting process of bearing casing was designed,and the mold filling and solidification process of castings was simulated by Procast numerical simulation software,the solidification field and the change of metal liquid flow state were observed,and the location of porosity and shrinkage defects was predicted.According to the simulation results,the optimized casting process scheme was proposed.The results show that the optimized process scheme has a stable flow state of the molten metal in the mold filling process,reasonable placement of the riser and control of the riser size can increase the effective filling distance and reduce defects,and high quality castings can be obtained through simulation and test.

关 键 词：轴承机匣铸件 数值模拟 充型凝固 疏松缩孔 

分 类 号：TG269[金属学及工艺—铸造]