Manufacturing method of high-strength oxidable aluminum alloy plate strip
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A technology of aluminum alloy strips and manufacturing methods, which is applied in the field of manufacturing high-strength oxidizable aluminum alloy strips, can solve the problems of low powder metallurgy manufacturing efficiency, unstable color, and low product strength, and achieve good reliability. Oxidability, good formability, and high productivity
Active Publication Date: 2016-09-28
昆山灿鑫精密电子科技有限公司
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However, the manufacturing efficiency of powder metallurgy is low, the cost is high, and it cannot be oxidized. Usually, the surface color is treated by PVD, and the color tends to fade during the use of mobile phones, and the color is relatively simple; ordinary 6-series profiles are purely CNC processed by Cato, and processed products Low strength, many materials, long working hours, and the color of oxidation is unstable
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Embodiment 1
[0028] A method for manufacturing a high-strength oxidizable aluminum alloy plate and strip, comprising the following steps:
[0029] (1) Preparation of aluminum alloy melt: determination of chemical composition, the mass percentage of each element in aluminum alloy is Si: 0.6%, Fe: 0.1%, Cu: 0.6%, Mn: 0.2%, Mg: 0.9%, Cr: 0.01%, Zn: 0.01%, Ti: 0.01%, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum; according to the mass percentage of the above elements, weigh high-purity aluminum with an aluminum content of 99.85% Ingots, aluminum-iron master alloys, and aluminum-manganese master alloys are used as raw materials, and then put into a melting furnace to be smelted into an aluminum alloy melt at 720°C to 750°C.
[0030] (2) Casting: The aluminum alloy solution is cast according to the casting temperature of 710°C-730°C and the casting speed of 60-65mm / min, air-cooled after being out of the furnace, sawed into aluminum alloys with specifications of 300mm×...
Embodiment 2
[0036] The difference between the manufacturing method of this example and Example 1 is the mass percentage of each element in the aluminum alloy in step (1), the specific values are: Si: 0.75%, Fe: 0.7%, Cu: 0.75%, Mn: 0.25% , Mg: 1.0%, Cr: 0.03%, Zn: 0.03%, Ti: 0.03%, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum. Other steps and parameters are the same as those in Embodiment 1.
Embodiment 3
[0038] The difference between the manufacturing method of this example and Examples 1 and 2 is the mass percentage of each element in the aluminum alloy in step (1), the specific values are: Si: 0.9%, Fe: 1.4%, Cu: 0.9%, Mn: 0.3%, Mg: 1.1%, Cr: 0.05%, Zn: 0.05%, Ti: 0.05%, single impurity: ≤0.05%, total impurity: ≤0.15%, and the rest is aluminum. Other steps and parameter are identical with embodiment 1 or 2.
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Abstract
The invention discloses a manufacturing method of a high-strength oxidable aluminum alloy plate strip. The manufacturing method of the high-strength oxidable aluminum alloy plate strip comprises the following steps that (1) molten aluminum alloy is prepared, specifically, chemical elements are determined, and the aluminum alloy comprises, by mass, 0.6%-0.9% of Si, 0.1%-1.4% of Fe, 0.6%-0.9% of Cu, 0.2%-0.3% of Mn, 0.9%-1.1% of Mg, 0-0.05% of Cr, 0-0.05% of Zn, 0-0.05% of Ti, 0-0.05% of single impurities, 0-0.15% of blended impurities, and the balance Al; (2) casting is conducted; (3) hot rolling is conducted; (4) intermediate annealing is conducted; (5) cold rolling and finish rolling are conducted; and (6) continuous pull-correcting or predrawing is conducted. The aluminum alloy plate strip manufactured through the method has high strength, the tensile strength T.S(delta b / MPa) is equal to or higher than 350 MPa, the yield strength Y.S(delta 0.2 / MPa) is equal to or higher than 320 MPa, the extensibility (theta / %) is equal to or higher than 8%, and the surface hardness HV is equal to or higher than 120. The type of the aluminum alloy plate strip manufactured through the method is TY62-T651, the aluminum alloy plate strip is high in supporting strength and surface strength and oxidable when used for a side key of a mobile phone support, continuous punching can be achieved, and the production efficiency is high.
Description
technical field [0001] The invention relates to the technology in the field of aluminum alloy plates and strips, in particular to a method for manufacturing high-strength oxidizable aluminum alloy plates and strips. Background technique [0002] There are mainly two methods for the manufacture of the existing mobile phone tray and side keys: powder metallurgy and pure CNC processing. However, powder metallurgy manufacturing has low efficiency, high cost, and is non-oxidizable. Usually, the surface color is treated by PVD, and the color tends to fade during the use of mobile phones, and the color is relatively simple; ordinary 6-series profiles are purely CNC processed by Cato, and processed products The strength is low, the materials used are large, the labor time is long, and the color produced by oxidation is unstable. Therefore, it is necessary to improve the current mobile phone card tray and side key manufacturing methods. Contents of the invention [0003] In view ...
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