6-series alloy anode aluminum oxide board strip for mobile phone frame and preparation method of 6-series alloy anode aluminum oxide board strip
An alloy anode and mobile phone frame technology is applied in the field of 6-series alloy anodized aluminum sheets and strips for mobile phone frames and their preparation, which can solve the problem that the product cannot be applied to mobile phone frames, cannot meet continuous stamping production, and is not suitable for high-strength 6-series alloys, etc. problems, to achieve the effect of good anode appearance quality, high-strength anodized appearance, and shortened production cycle.
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Embodiment 1
[0036] A high-strength and high-thermal-conductivity aluminum plate and strip for mobile phone mid-board, its composition is Si 0.70wt%, Fe 0.06wt%, Cu0.48wt%, Mn0.15wt%, Mg 0.95wt%, Ti 0.02wt%; the balance is Al .
[0037] The preparation method comprises the following steps:
[0038] 1) The aluminum ingot is melted in a melting furnace, and after batching, semi-continuous casting is carried out to obtain a large flat ingot with a wall thickness of 400mm;
[0039] 2) Homogenization annealing is carried out directly after the ingot is obtained, the metal temperature is kept at 400°C for 10 hours, and then the temperature is raised to 540°C for 30 hours, then sawing and face milling are arranged, and finally hot rolling is arranged. The final rolling temperature is 320°C, and the hot rolling thickness is 4.0mm;
[0040] 3) The finished product after heat treatment has a tensile strength of 340mpa, a yield strength of 317mpa, and an elongation of 11.2%. The maximum grain size ...
Embodiment 2
[0042] A high-strength and high-thermal-conductivity aluminum sheet and strip for mobile phone mid-plate, its composition is: Si 0.5wt%, Fe 0.08wt%, Cu0.50wt%, Mn0.1wt%, Mg 0.8wt%, Ti 0.011wt%; Al.
[0043] The preparation method comprises the following steps:
[0044] 1) The aluminum ingot is melted in a melting furnace, and after batching, semi-continuous casting is carried out to obtain a large flat ingot with a wall thickness of 560mm;
[0045] 2) Homogenization annealing is carried out directly after the ingot is obtained, the metal temperature is kept at 390°C for 12 hours, and then the temperature is raised to 530°C for 40 hours, then sawing and face milling are arranged, and finally hot rolling is arranged. The hot rolling start temperature is 455°C, and the hot rolling The final rolling temperature is 360°C, and the hot rolling thickness is 10.0mm;
[0046] 3) The finished product after heat treatment has a tensile strength of 320mpa, a yield strength of 305mpa, and...
Embodiment 3
[0048] A high-strength and high-thermal-conductivity aluminum plate and strip for mobile phone mid-board, its composition is: Si 0.55wt%, Fe 0.05wt%, Cu 0.48wt%, Mn0.2wt%, Mg0.7wt%, Ti 0.003wt%; for Al.
[0049] The preparation method comprises the following steps:
[0050] 1) The aluminum ingot is melted in a melting furnace, and after batching, it is semi-continuously cast; a large flat ingot with a wall thickness of 300mm is produced;
[0051] 2) Homogenization annealing is carried out directly after the ingot is obtained, the metal temperature is kept at 395°C for 10 hours, and then the temperature is raised to 530°C for 35 hours, then sawing and face milling are arranged, and finally hot rolling is arranged. The final rolling temperature is 340°C, and the hot rolling thickness is 4.0mm;
[0052] 3) The finished product after heat treatment has a tensile strength of 310mpa, a yield strength of 301mpa, and an elongation of 12.4%. The maximum grain size of the longitudinal...
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