Manufacturing method of high-strength mirror surface aluminum oxide suitable for mobile phone rear shell and frame integration and middle plate and frame integration
A technology for a mobile phone back case and a manufacturing method, which is applied to the manufacturing field of high-strength mirrorable alumina, can solve the problems of low material utilization rate, difficult complex structure, complicated process, etc., and achieves high production efficiency, high support strength, and surface strength. high effect
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[0033] Please refer to figure 1 As shown, it shows the specific structure of the preferred embodiment of the present invention, which is a high-strength mirror-surfaced alumina suitable for the integration of the rear shell and the middle plate frame of the mobile phone, and the manufacturing method of this high-strength mirror-surfaced alumina Include the following steps.
[0034] Step 1, preparation of aluminum alloy melt: Weigh high-purity aluminum ingots with an aluminum content of 99.95%, aluminum-iron master alloys, and aluminum-manganese master alloys as raw materials, and then add them to the melting furnace and heat them at 720°C to 750°C Melted into aluminum alloy melt, the mass percentage of each element in the aluminum alloy melt is Si: ≤0.05%, Fe: ≤0.08%, Cu: ≤0.1%, Mn: ≤0.1%, Mg: 2.2-2.8%, Zn : ≤0.05%, Ti: ≤0.05%, single impurity: ≤0.03%, total impurity: ≤0.1%.
[0035] Step 2, casting: cast the aluminum alloy solution according to the process of casting temper...
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