重卡轮毂的缩松缩孔形成机理及工艺优化  

Formation Mechanism of Shrinkage Porosity and Process Optimization in Wheels of Heavy Trucks

作　　者：熊仁龙 王荣昌 吴和保 苏现想 凌骏春 连明堂 万鹏 XIONG Ren-long;WANG Rong-chang;WU He-bao;SU Xian-xiang;LING Jun-chun;LIAN Ming-tang;WAN Peng(Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety,School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China;Hubei Xinxing Quanli Machinery Co.,Ltd.,Suizhou 441300,Hubei,China)

机构地区：[1]武汉工程大学机电工程学院化工装备强化与本质安全湖北省重点实验室,湖北武汉430205 [2]湖北新兴全力机械有限公司,湖北随州441300

出　　处：《铸造》2024年第4期551-555,共5页Foundry

基　　金：华中科技大学材料成形与模具技术全国重点实验室开放课题基金(P2023-2026);武汉工程大学研究生教育创新基金(CX2022104)。

摘　　要：针对重卡汽车轮毂在铸造过程中出现的缩孔缩松缺陷问题,采用顺序凝固结合均衡凝固理论,利用华铸CAE进行铸造模拟,优化了补缩系统。优化后的浇冒口系统显著缩短了凝固时间,降低了因缩松缩孔造成的废品率。结果表明,铸件的结构完整性和理化性能均满足标准要求。本研究为提高铸件质量和优化铸造工艺提供了有益参考。Addressing the porosity and shrinkage issues encountered during the casting process of heavy-duty truck wheel hubs,a combination of sequential solidification and equilibrium solidification theories was employed.Casting simulations were conducted using Huazhu CAE software to optimize the feeding and risering system.The optimized gating and risering system significantly reduced solidification time and minimized the defect rate caused by porosity and shrinkage.The results showed that the structural integrity and physicochemical properties of the castings met the required standards.This study provides a valuable reference for improving casting quality and optimized casting processes.

关 键 词：重卡轮毂 球墨铸铁 缩松缩孔 工艺优化 

分 类 号：TG250.6[金属学及工艺—铸造]