Abstract:3003 aluminum alloy has advantages such as moderate strength, good corrosion resistance, and excellent welding performance, and is widely used in the production of food packaging aluminum foil, radiators, and other products. However, there is a problem of unsatisfactory ear rate in the casting and rolling process of 3003 aluminum alloy. Based on this, this article takes the cold-rolled 1.0mm sheet and strip of 3003 aluminum alloy produced by our company as the research object, and combines EBSD detection method to study the relationship between ear rate, annealing temperature, and texture structure during the punching process of 3003 aluminum alloy cold-rolled sheet at different annealing temperatures. Finally, the key factors affecting ear rate are identified. The research results indicate that the texture in aluminum alloy sheets after cold rolling and annealing of 3003 cast and rolled products is mainly composed of deformation textures such as Copper, Brass, S, Goss, and recrystallization textures such as Cube, CubeND, P, R, and Brass R. With the increase of annealing temperature, the tendency of deformation texture to transform into recrystallization texture increases, and it is significantly accompanied by the decrease of S-type texture and R-type texture, while the gradual increase of Cube and CubeND type texture, When the ratio of deformation texture to recrystallization texture is within the range of 0.67-0.73, the stamping effect is significantly improved and the ear rate effect is ideal.

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