熔模铸造ZL114A铝合金凝固过程界面换热系数研究  

Study on the Interface Heat Transfer Coefficient During Solidification of an Investment Casting ZL114A Aluminum Alloy

作　　者：冀晓磊 孟晓东 张荣强 邢昌勇 王琳 刘鑫霞 刘晓杰 郑宇航 JI Xiaolei;MENG Xiaodong;ZHANG Rongqiang;XING Changyong;WANG Lin;LIU Xinxia;LIU Xiaojie;ZHENG Yuhang(Hebei Gangyan Dekai Technology Co.,Ltd.,Baoding 072750,China)

机构地区：[1]河北钢研德凯科技有限公司,河北保定072750

出　　处：《铸造技术》2024年第4期395-400,共6页Foundry Technology

摘　　要：为获得ZL114A铝合金在凝固过程中温度场的分布规律,根据实际工况设计了测温实验方案,利用热电偶和热成像仪得到了金属及其型壳在凝固过程中温度场的变化曲线,并根据实际测得的温度曲线借助ProCAST模拟软件中的反算模块对铸件与型壳间的界面换热系数进行了反求,得到了更加符合实际的界面换热系数。随后对其进行验证,用该界面换热系数所模拟求得的金属液温度曲线与实测值最大温差为10℃,型壳温度曲线与实测值最大温差为15℃,该方法及结果为铝合金熔模精铸模拟界面换热系数的设置提供了参考依据。To determine the distribution pattern of the temperature field during the solidification process of a ZL114A aluminum alloy,a temperature measurement experimental scheme was designed based on actual working conditions.The temperature field variation curves of the metal and its shell during the solidification process were obtained using thermocouples and thermal imaging instruments.Based on the actual measured temperature curves,the interface heat transfer coefficient between the casting and the shell was calculated using the reverse calculation module in the ProCAST simulation software,and a more practical interface heat transfer coefficient was obtained.The maximum temperature difference between the simulated metal liquid temperature curve and the measured value using the interface heat transfer coefficient is 10℃,and the maximum temperature difference between the simulated shell temperature curve and the measured value is 15℃.The results provide a reference basis for setting the interface heat transfer coefficient in aluminum alloy investment casting simulations.

关 键 词：熔模铸造 数值模拟 界面换热系数 铝合金 

分 类 号：TG249.5[机械工程—精密仪器及机械]