考虑铸型强度的球墨铸铁件冒口设计方法  

Design Method of Risers for Ductile Iron Castings Based on Mold Strength

作　　者：殷亚军[1] 徐巧志 周建新[1] 解明国[2] 刘伟[2] 计效园[1] 沈旭[1] YIN Yajun;XU Qiaozhi;ZHOU Jianxin;XIE Mingguo;LIU Wei;JI Xiaoyuan;SHEN Xu(State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,Hubei China;Anhui Heli Co.,Ltd.,Hefei Casting and Forging Plant,Hefei 230022,Anhui China)

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074 [2]安徽合力股份有限公司合肥铸锻厂,安徽合肥230022

出　　处：《铸造工程》2020年第5期33-39,共7页Foundry Engineering

基　　金：国家自然科学基金面上项目(51775205);材料成形与模具技术国家重点实验室重点自主研究项目(数字化智能化铸造技术及应用)以及企业研究课题的资助。

摘　　要：球墨铸铁因其良好的力学性能、铸造性能及较低的生产成本,得到广泛应用,占铸件总产量比例逐年升高。但由于球墨铸铁件凝固过程中产生的石墨化膨胀,对铸型有压力作用,冒口的大小需要综合考虑多种因素而计算复杂;并且球墨铸铁件结构越来越复杂,冒口定位效率低,因此复杂球墨铸铁件的冒口设计比较困难。为此,本文进行了复杂球墨铸铁件冒口设计方法及铸造工艺CAD系统的研究,主要研究工作如下:以收缩模数法为基础,引入铸型强度因素,设计数值模拟方案,基于华铸CAE平台进行模拟,分析归纳数据建立考虑铸型强度的球墨铸铁件冒口设计方法,并应用于复杂球墨铸铁件的冒口设计。Ductile iron has been widely used because of its excellent mechanical property,good casting property and low cost production.The proportion of ductile iron castings in total castings has increased year by year.But because of the graphitization expansion during solidifcation of ductile iron castings,which exerts pressure on the mold,it is difcult to determine the size of the riser by considering many factors.Moreover,the shape of ductile iron castings is becoming more and more complex,and the position of the riser is difcult to determine,so the riser design for ductile iron castings is difcult.Therefore,the riser design method and casting process CAD system for ductile iron castings with complex shape were studied in this paper.The main work is shown below.A riser design method for complex ductile iron castings was established.Based on the moduli calculation method,the factor of mold strength was introduced.The numerical simulation scheme was designed,and the numerical simulation was carried out based on the InteCAST platform,then the method of calculating the size of the riser for ductile iron castings considering mold strength was established by analyzing and summarizing the data,and fnally applied to the resier design of complex ductile iron castings.

关 键 词：复杂球墨铸铁件 冒口设计 铸造工艺CAD系统 铸型强度 

分 类 号：TG2444[金属学及工艺—铸造]