Research On Composition,Technology And Performance For 1100 Aluminum Alloy For The Capacitor Shell

1100 Commercial Aluminum has been widely used to manufacture components with better conformability and corrosion resistance because of excellent ductility and corrosion-resistant.Anisotropy of rolled sheets produces unsmooth surface called earing on the cup edge,which decreases production yield and utilization rate.Process of machining and heat treatment,The best composition of the aluminum alloy for the capacitor shell was determined..To be the emphasis,the anisotropy of deep-drawing 1100 commercial pure Aluminum sheets produced by three different annealing processes and its relationship with earing rate were studied by means of tensile test,cupping test,microstructure observation,Fractographs of sample and texture analysis.Explored a research route for deep-drawing material productive processing and provided references for quality control for enterprises and the research later.The best composition of the aluminum alloy for the capacitor shell was determined(wt%):And same to the Process of machining and heat treatment,Homogeneous Annealing:580℃for 10h and naturally cooling in the fumace;Fnal Annealing:260℃for 3h and naturally cooling in the air.Mechanical properties of plate,which were obtained by tensile test and cupping test,met the requirements of 1100-O commercial pure Aluminium sheets. The results were fitted by the distribution function and the index of anisotropy was calculated in order to find the relationship between anisotropy and earing rate.The analysis proved that the anisotropy of plastic strain ratio agreed with the earing effect and the earing standard using thick anisotropy index fitted into the rule of experiment. According to the research of Fractographs of sample,We can get the conclusion that all of sample obtained by the three measure were flexible fracture,and the size of the toughness cavity were fitted to the conclusion of test before.Give a summary of relation between earing and the microstructure.3~# technics made the more fully recrystallization and less residue internal stress,and higher elongation.The density of the main texture were more equilibrium,so the 0°/90°earing changed into the 0°/45°/90°earing.The earing rate was lower than 2%and satisfied the requirements of the finished product.The evaluation foundation in anisotropy of rolled sheets was obtained in this paper,meanwhile the relationship between anisotropy and earing rate was studied, and the relation of texture and the eating rate of deep-drawing process was researched. The research provides technical basis for further study on decreasing the anisotropy of plate.