传热系数对低压铸造AlSi7Mg0.3合金薄壁件品质影响  

Effects of Heat Transfer Coefficient on Forming Quality of Aluminum Alloy Thin Wall Parts

作　　者：王宇航 苏小平[1] Wang Yuhang;Su Xiaoping(School of Mechanical and Power Engineering,Nanjing Technology University)

机构地区：[1]南京工业大学机械与动力工程学院,南京211816

出　　处：《特种铸造及有色合金》2022年第11期1342-1345,共4页Special Casting & Nonferrous Alloys

基　　金：江苏省高校自然科学研究课题资助项目(19KJB460005)。

摘　　要：利用Design-expert软件设计以各模具的传热系数和模具温度为试验因数,以铸件孔隙总体积为响应指标的响应面试验。应用ProCAST软件对铸件成形过程进行数值模拟计算得到试验数据。最后分析响应面试验数据,得到下模与金属液传热系数对该铸件成形品质影响效果显著的规律,并提出使用水基石墨涂料且通过改变涂层厚度调节传热系数大小的方法。The Design-expert software was adopted to design the response surface test with the heat transfer coefficient of each die and die temperature as the test factor and the sum of all pore volumes of the castings as the response index. ProCAST software was applied to simulate the experimental forming process, and the experimental data was obtained. Finally, the response surface test data was analyzed to obtain the influence law of heat transfer coefficient between the lower die and liquid metal on the molding quality of the castings. Moreover, water-based graphite coating and changing the coating thickness were presented to adjust the heat transfer coefficient.

关 键 词：响应面法 铝合金薄壁件 低压铸造 传热系数 

分 类 号：G249.2[文化科学] TP311[自动化与计算机技术—计算机软件与理论] TG146.21[自动化与计算机技术—计算机科学与技术]