铝合金缸盖低压铸造模具设计及凝固质量优化  

Design of Low Pressure Casting Mold for Aluminum Alloy Cylinder Head and Optimization of Solidification Quality

作　　者：陈晓斌 谈毅 杨安 刘臻炜 CHEN Xiao-bin;TAN Yi;YANG An;LIU Zhen-wei(Mechanical Engineering Department,Guangzhou City University of Technology,Guangzhou 510800,Guangdong,China;Guizhou Lanhui New Material Co.,Ltd.,Zunyi 563000,Guizhou,China)

机构地区：[1]广州城市理工学院机械工程学院,广东广州501800 [2]贵州蓝辉新材料有限公司,贵州遵义563000

出　　处：《铸造》2024年第8期1144-1150,共7页Foundry

基　　金：2022年度广东省普通高校特色创新类项目(2022KTSCX182);2022年度广州城市理工学院质量工程项目(JY220102)。

摘　　要：针对摩托车发动机的铝合金单缸缸盖低压铸造成形时容易发生缩松、缩孔和气孔等缺陷问题,运用MAGMA软件模拟缸盖低压铸造过程温度和冷却率变化情况,预测缸盖容易产生的缺陷趋势及重点发生区域。在合理设计缸盖模具结构和侧模各部分冷却系统的同时,将数值模拟结果与智能化设备相结合应用,运用低压铸造机数字化智能技术进行凝固工艺过程的冷却时序控制和压力分段精细化控制,避免缸盖燃烧室重点区域凝固结晶时的缺陷发生,提高铝合金缸盖铸件内部组织成形致密度及低压铸造生产质量。To solve the defects of aluminum alloy single cylinder head of motorcycle engine,such as dispersed shrinkage,shrinkage and blowhole,the MAGMA software was used to simulate the temperature and cooling rate changes in the low pressure casting process of the cylinder head,and predict the defect tendency and key development areas of the cylinder head.While reasonably designing the cylinder head die structure and the cooling system of each part of the side die,the numerical simulation results were combined with the intelligent equipment,and the digital intelligent technology of the low-pressure casting machine was used to control the cooling time sequence and the fine pressure control of the solidification process,so as to avoid the defects during the solidification and crystallization in the key area of the cylinder head combustion chamber,and improve the internal structure forming density of the aluminum alloy cylinder head castings and the production quality of the low-pressure casting.

关 键 词：铝合金缸盖 低压铸造 缺陷预测 智能设备 

分 类 号：TG245[金属学及工艺—铸造] TG249.2[一般工业技术—材料科学与工程] TG146.2[金属学及工艺—金属材料]