导向器蜡模工艺参数优化与尺寸精度检测  

Process Parameter Optimization and Dimensional Accuracy Detection of Guide Wax Pattern

作　　者：余童 汪东红 吴文云[1] 雷四雄 谭诗薪 郝新 周建新[5] 殷亚军[5] 疏达 YU Tong;WANG Dong-hong;WU Wen-yun;LEI Si-xiong;TAN Shi-xin;HAO Xin;ZHOU Jian-xin;YIN Ya-jun;SHU Da(School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming,Shanghai 200240,China;China Aircraft Southern Industry Co.,Ltd.,Zhuzhou 412000,Hunan,China;Jiashan Xinhai Pecision Casting Co.,Ltd.,Jiashan 314101,Zhejiang,China;State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science&Technology,Wuhan 430074,Hubei,China)

机构地区：[1]上海工程技术大学材料工程学院,上海201620 [2]上海交通大学材料科学与工程学院,上海市先进高温材料及其精密成形重点实验室,上海200240 [3]中国航发南方工业有限公司,湖南株洲412000 [4]嘉善鑫海精密铸件有限公司,浙江嘉善314101 [5]华中科技大学材料成形与模具技术国家实验室,湖北武汉430074

出　　处：《铸造》2021年第11期1329-1334,共6页Foundry

基　　金：国家重点研发计划(2020YFB1710101,2020YFB1710102);国家科技重大专项(2017-Ⅶ-0008-0102,J2019-Ⅵ-0004-0117);国家自然科学基金(51821001,52090042);浙江省重点研发计划(2020C01056,2021C01157);浙江省博士后项目择优资助(zj2019035);中国博士后科学基金(2020M671787);先进高温结构材料重点实验室开放课题资助;材料成形与模具技术国家重点实验室开放基金(P2021-006)

摘　　要：导向器蜡模制备是熔模铸造生产导向器铸件的第一大工序,通过优化注蜡工艺参数提升导向器蜡模的品质。采用Design expert进行试验设计,并结合Moldflow模拟注蜡试验,运用遗传算法对目标函数求解。经分析与验证四个工艺参数对平均体积收缩率的影响顺序为:注蜡温度>保压时间>保压压力>蜡料流量,最优注蜡工艺参数为保压压力0.1 MPa,保压时间13.34 s,蜡料流量32.23 cm^(3)/S,注蜡温度62℃,在此条件下,导向器蜡模尺寸精度达到CT4级别。The preparation of the guide wax pattern is the first major process of investment casting to produce guide castings.The quality of the guide wax pattern was improved by optimizing the wax injection process parameters in this paper.Design expert was used to design the experiment,combined with mold flow to simulate the wax injection experiment,and the genetic algorithm was used to solve the objective function.After analysis and verification,the order of the influence of the four process parameters on the average volume shrinkage rate is:wax injection temperature>pressure holding time>pressure holding pressure>wax material flow.The optimal wax injection process parameters are the holding pressure of 0.1 MPa,and the holding time of 13.34 s,wax material flow of 32.23 cm^(3)/s,wax injection temperature of 62℃.Under these conditions,the guide wax pattern dimensional accuracy reaches CT4 level.

关 键 词：熔模铸造 工艺参数 导向器蜡模 尺寸精度 

分 类 号：TG249.5[机械工程—精密仪器及机械]