ZG270-500后桥的铸造工艺优化  

Casting Process Optimization of ZG270-500 Rear Axle

作　　者：王伟奇[1] 严文超[1] 汪静[1] 刘忠国 WANG Wei-qi;YAN Wen-chao;WANG Jing;LIU Zhong-guo(Hubei Three Gorges Polytechnic,Yichang 443000,Hubei,China;Guizhou Jonyang Kinetics Co.,Ltd.,Guiyang 550006,Guizhou,China)

机构地区：[1]湖北三峡职业技术学院,湖北宜昌443000 [2]贵州詹阳动力重工有限公司,贵州贵阳550006

出　　处：《铸造》2023年第11期1486-1492,共7页Foundry

基　　金：湖北省教育科学规划课题(2021GB159);湖北三峡职业技术学院科研项目(2022ZK03)。

摘　　要：针对轮式挖掘机后桥铸件合格率不高的问题,对后桥的原铸造工艺方案进行分析并运用AnyCasting进行数值模拟。分析原工艺的铸造缺陷原因,对浇注系统、补缩系统进行优化改进,并对优化设计的铸造工艺方案进行数值模拟验证,模拟结果表明后桥按工艺设计完成顺序凝固,原铸造缺陷问题得到解决。经过小批量生产验证,后桥铸件的合格率有明显提高,工艺出品率由43.4%提高到64.2%。Aiming at the problem of low qualified rate of rear axle castings of wheeled excavator,the original casting process scheme of rear axle is analyzed and numerical simulation is made by using of AnyCasting in this research.In addition,the causes of casting defects in the original process are analyzed,and the gating system,riser and chill design are optimized and improved.Then,the optimized casting process scheme is verified by using numerical simulation.The simulation results show that the rear axle is solidified in sequence according to the process design,and the original casting defects are solved.After small batch production verification,the qualified rate of rear axle castings has been significantly improved,and the process yield has increased from 43.4%to 64.2%.

关 键 词：ZG270-500 后桥 铸造工艺 数值模拟 

分 类 号：TG26[金属学及工艺—铸造]