A kind of aluminum alloy sheet material for the appearance of electronic products and its production process
A technology for aluminum alloy sheets and electronic products, which is applied in the field of aluminum alloy sheet processing, can solve the problems of failing to meet the requirements of high-end electronic product appearance and yield rate, high cracking rate of ordinary aluminum alloys, and black lines on the surface, etc., to achieve metal Bright luster, high yield, effect of reducing grain size
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Embodiment 1
[0030] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.3%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.45%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.
[0031] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:
[0032] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 720°C, keep it for 5 hours, degas and filter the molten aluminum for semi-continuous casting at 700°C , cooled to room temperature to obtain an aluminum alloy flat ingot with a thickness of 520mm;
[0033] (2) Homogenization heat treatment: heat the obtained aluminum alloy flat ingot to 530°C in a soaking furnace, keep it warm for 10 hours, and then carry out air...
Embodiment 2
[0043] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.4%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.55%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.
[0044] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:
[0045] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 760°C, keep it for 8 hours, and carry out semi-continuous casting at 720°C for the degassed and filtered aluminum liquid. To room temperature, the obtained aluminum alloy slab ingot with a thickness of 650mm;
[0046] (2) Homogenization heat treatment: place the obtained aluminum alloy flat ingot in a soaking furnace and heat it to 560°C, keep it warm for 20 hour...
Embodiment 3
[0056] An aluminum alloy plate for the appearance of electronic products, comprising the following components in weight percentage: Si=0.32%, Fe≤0.10%, Cu≤0.05%, Mn≤0.05%, Mg=0.52%, Zn≤0.05%, Cr ≤0.05%, Ti≤0.05%, and the balance is Al and unavoidable elements; wherein, the unavoidable individual elements are ≤0.05%, and the total is ≤0.15%.
[0057] The production process of aluminum alloy sheets for the appearance of electronic products includes the following steps:
[0058] (1) Casting: According to the predetermined weight percentage, put the ingredients of the above elements into the melting furnace for melting at 745°C, keep it for 7 hours, and carry out semi-continuous casting at 710°C for the degassed and filtered aluminum liquid. To room temperature, the obtained aluminum alloy slab ingot with a thickness of 580mm;
[0059] (2) Homogenization heat treatment: heat the obtained aluminum alloy flat ingot to 545°C in a soaking furnace, keep it warm for 16 hours, and then ...
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