Aluminum alloy strip for mobile phone battery shell and manufacturing method thereof
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A technology for aluminum alloy strips and mobile phone batteries, which is applied in metal rolling and other directions, can solve problems such as coarse alloy grains, high elongation after breaking, uneven structure, etc., and achieve uniform grain structure, enhanced plasticity and deep drawing performance Effect
Active Publication Date: 2010-06-16
NORTHEAST LIGHT ALLOY CO LTD
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[0003] The present invention aims to solve the problem that the existing 3003-H14 aluminum alloy strips used in mobile phone battery cases have low tensile strength, high elongation after breaking, high ear-making rate, and it is difficult to meet the requirements of mobile phone battery cases after the material is thinned. Symmetrical box-type large-scale thinning and stretching punching forming requirements, the existing manufacturing method prepares the problem of coarse grains and uneven structure of the alloy, and provides aluminum alloy strips for mobile phone battery cases and their manufacturing methods
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specific Embodiment approach 1
[0013] Embodiment 1: The aluminum alloy strip for mobile phone battery case of this embodiment is composed of 0.1% to 0.4% Si, 0.4% to 0.6% Fe, 0.07% to 0.15% Cu, 1.10% to 1.30% Made of Mn, 0.2%-0.5% Mg, 0.01%-0.08% Zn, 0.02%-0.03% Ti and 96.94%-98.10% Al.
[0014] The tensile strength of the aluminum alloy strip for mobile phone battery cases in this embodiment is 190MPa-210MPa, the elongation after fracture is 2.0%-4.0%, and the ear-making rate is 3%-4%, which can meet the requirements of the asymmetrical box type of mobile phone battery cases. Large-scale thinning and stretching punching forming requirements.
specific Embodiment approach 2
[0015] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the aluminum alloy strip for mobile phone battery shell is composed of 0.2%-0.3% Si, 0.45%-0.55% Fe, 0.09%-0.14% Cu, 1.15% to 1.25% of Mn, 0.25% to 0.45% of Mg, 0.02% to 0.07% of Zn, 0.022% to 0.028% of Ti and 97.212% to 97.818% of Al.
specific Embodiment approach 3
[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the aluminum alloy strip for mobile phone battery shell is composed of 0.25% Si, 0.50% Fe, 0.12% Cu, and 1.20% Mn by mass percentage , 0.35% Mg, 0.05% Zn, 0.025% Ti and 97.505% Al.
[0017] The tensile strength of the aluminum alloy strip for mobile phone battery case in this embodiment is 200MPa, the elongation after fracture is 2.3%, and the ear-making rate is 3.1%, which can meet the asymmetric box-type large-scale thinning stretch punching of mobile phone battery case Forming requirements.
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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...
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