电渣熔铸导叶数值模拟技术研究  

Development of Numerical Simulation Technology for Wicket Gate Casting Manufactured by Using ESRC Process

作　　者：张华[1] 关洋[1] 陈瑞[1] 孙逊[1] 宋照伟[1] 

机构地区：[1]沈阳铸造研究所,辽宁沈阳110022

出　　处：《铸造》2013年第7期637-640,共4页Foundry

基　　金："高档数控机床与基础制造装备"科技重大专项(2010ZX04016-014);辽宁省自然科学基金计划(201202212)

摘　　要：采用有限差分法离散电渣熔铸过程数学模型,用热平衡法处理换热边界条件,以VC++6.0为开发工具,开发了电渣熔铸异形件温度场数值模拟实用程序。以水轮机导叶为模拟和试验对象,验证了电渣熔铸异形件温度场数值模拟计算的准确性,并预测了导叶疏松缺陷产生的位置,模拟结果与试验结果较为吻合。The finite difference method is used to discretize the mathematical model of electroslag remelting casting （ESRC） process, and the thermal equilibrium method is used to deal with the heat transfer boundary conditions. A practical numerical simulation program of temperature field for complex shape casting has been developed on the basis of the Visual C＋＋ 6.0 platform, selecting hydroturbine wicket gate as object of modeling and testing, the accuracy of the temperature field numerical simulation calculation for ESRC complex casting is verified, and the position of the porosity defect of the wicket gate is also predicted. The numerical simulation result is in good agreement with the experiment.

关 键 词：电渣熔铸 温度场 数值模拟 

分 类 号：TF142[冶金工程—冶金物理化学] TP391.9[自动化与计算机技术—计算机应用技术]