基于数值模拟的QT500-7固定底座砂型铸造工艺优化研究  

Optimization of sand casting process for QT500-7 fixed base via numerical simulation

作　　者：聂俊礽 王峥 邢健博 殷培琨 王昊天 刘富初 NIE Junreng;WANG Zheng;XING Jianbo;YIN Peikun;WANG Haotian;LIU Fuchu(School of Mechanical Engineering and Electronic Information,China University of Geosciences,Wuhan 430074,Hubei,China)

机构地区：[1]中国地质大学(武汉)机械与电子信息学院,湖北武汉430074

出　　处：《金属加工(热加工)》2025年第2期140-146,共7页MW Metal Forming

基　　金：教育部产学合作协同育人项目2022年第一批立项项目(No.220604555150617);国家级大学生创新创业训练计划项目(No.202410491030,No.202410491047,No.202410491048,No.202410491058,No.S202410491017,No.S202410491035,No.S202410491102,No.S202410491119,No.X202410491055);中国地质大学(武汉)教学实验室开放基金项目(No.SKJ2023125);广东省基础与应用基础研究基金自然科学基金面上项目(No.2024A1515013258)。

摘　　要：采用三维绘图软件绘制QT500-7固定底座三维模型,分析其结构特点、工艺要求和服役条件等要素,初步设计了该球墨铸铁件的铸造工艺方案,并利用仿真模拟软件进行了充型和凝固收缩模拟研究。初始铸造工艺方案模拟结果表明,充型完整,无浇不足、冷隔等现象,但在铸件底板处厚大部位存在缩孔缺陷。通过增设冒口、冷铁来优化铸造工艺方案,显著提高铸件质量,在铸件内部已无缺陷显现,可为固定底座的实际铸造工艺设计提供参考。With the help of SolidWorks software,the three-dimensional model of ductile iron QT500-7 fixed base was established.Its structural characteristics,process requirements and actual conditions were analyzed to initially design the casting process scheme,and the simulation of mold filling and solidification shrinkage was performed by using simulation software.The simulation results show that the filling process is stable and there is no insufficient pouring or cold separation,while there are shrinkage holes in the thick part of the fixed base.The casting process was adjusted by adding risers and cold iron.After optimization and simulation,the quality of the castings is significantly improved,and no defects in the castings.The optimized scheme can provide theoretical support for the actual casting process design of the fixed base.

关 键 词：数值模拟 QT500-7 固定底座 砂型铸造 

分 类 号：TG242[金属学及工艺—铸造]