汽车用AlSi9Cu铝合金的压铸工艺研究  

Research on Die Casting Process of AlSi9Cu Aluminum Alloy for Automobile

作　　者：张丹丹[1] 刘勇彪[2] 张荣华 ZHANG Dandan;LIU Yongbiao;ZHANG Ronghua(Tangshan Polytechnic College,Tangshan 063299,China;Sichuan College of Architectural Technology,Deyang 618000,China;Key Laboratory of Hebei Province Modern Metallurgy,College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]唐山工业职业技术学院,河北唐山063299 [2]四川建筑职业技术学院,四川德阳618000 [3]华北理工大学冶金与能源学院河北省现代冶金重点实验室,河北唐山063210

出　　处：《热加工工艺》2023年第9期76-78,75,共4页Hot Working Technology

基　　金：河北省高等科学技术研究项目(Z2018228)。

摘　　要：选定690、700、710℃三种浇注温度,150、200、250℃三种模具预热温度,1、2、3 m/s三种充型速度,通过L9(33)正交试验,设计了汽车用AlSi9Cu铝合金压铸件不同压铸工艺参数。经过实际生产后对9组零件含气比例的分析,得到了正交试验中不同因素和水平对压铸试验的影响顺序以及设计的最优工艺参数。结果表明,在不同的参数范围内,充型速度对最终结果有着最大的影响,其影响顺序为充型速度>浇注温度>模具预热温度;根据含气量大小得到了最优组合为浇注温度700℃,充型速度2 m/s,模具预热温度250℃。对正交试验中9组不同参数的汽车用AlSi9Cu零件进行了实际生产并进行了X射线无损检测,检测结果与正交试验分析结果基本相符。使用最优组合可以生产出致密的汽车用AlSi9Cu零件。Three casting temperatures(690,700,710℃),three mold temperatures(150,200,250℃)and three mold filling speeds(1,2,3 m/s)were selected.Through L9(33)orthogonal test,different die casting parameters of AlSi9Cu aluminum alloy were designed.Through the analysis of the gas content of 9 groups of parts after actual production,the order of influence of different factors and levels on the die casting experiment in orthogonal test and the optimal process parameters under this design were obtained.The results show that in different parameter ranges,the filling speed has the greatest influence on the final result,and the order of influence is filling speed>pouring temperature>die preheating temperature.According to the gas content,the optimal combination is pouring temperature of 700℃,the filling speed of 2 m/s,and the die preheating temperature of 250℃.Nine groups of AlSi9Cu parts for automobiles with different parameters in the orthogonal test were actually produced and X-ray nondestructive testing was carried out.The test results are basically consistent with the analysis results of the orthogonal test.Using the optimal combination,dense AlSi9Cu parts for automobiles can be produced.

关 键 词：压力铸造 AlSi9Cu铝合金 熔体温度 模具预热温度 充型速度 

分 类 号：TG292[金属学及工艺—铸造]