Aluminum alloy strip for mobile phone battery shell and manufacturing method thereof

Abstract

The invention provides an aluminum alloy strip for a mobile phone battery shell and a manufacturing method thereof, relates to an alloy strip and a manufacturing method thereof, and solves the problems of low tensile strength, high elongation after breakage and high earing rate of a conventional 3003-H14 aluminum alloy strip applied to the mobile phone battery shell, and uneven grain structures of alloys prepared by the conventional manufacturing method. The aluminum alloy strip is made from Si, Fe, Cu, Mn, Mg, Zn, Ti and Al. The tensile strength of the aluminum alloy strip is between 190MPa and 210MPa, the elongation after breakage of the aluminum alloy strip is between 2.0 and 4.0 percent, and the earing rate of the aluminum alloy strip is between 3 and 4 percent. The manufacturing method comprises the following steps of: mixing the materials; melting, casting, homogenizing annealing, hot rolling, and cold rolling to obtain the aluminum alloy strip for the mobile phone battery shell. The aluminum alloy strip for the mobile phone battery shell can improve the strength of the mobile phone battery shell and reduce wall thickness at the same time so as to improve the capacity of the battery shell.

Description

technical field

[0001] The present invention relates to alloy strips and methods for their manufacture. Background technique

[0002] With the rapid development of the communication and media industry, the volume of mobile phones is gradually decreasing, while the functions are increasing, resulting in increasing battery power consumption and shorter use time. In order to increase the capacity of the battery case and increase the battery life, It is the best way to reduce the wall thickness of the shell and improve the strength and hardness of the shell material. The existing 3003-H14 aluminum alloy strips used in mobile phone battery cases have a tensile strength of 150MPa at room temperature, an elongation rate of 3% to 8% after breaking, and an earring rate of 4% to 5%. The material is thinner Finally, it is difficult to meet the asymmetric box-type large-scale thinning and stretching punching molding requirements of mobile phone battery shells; the alloy grains prepared...

Images