Composite core material aluminum alloy flat cast ingot and manufacturing method thereof
A manufacturing method and technology of aluminum alloy, applied in the field of alloy ingot manufacturing, can solve the problems of high crack tendency and low casting yield, and achieve the effects of reducing stress, reducing cooling strength, and reducing the amount of warpage at the bottom
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specific Embodiment approach 1
[0021] Specific Embodiment 1: In this embodiment, a composite core aluminum alloy flat cast ingot is composed of Si: 0.74%-0.84%, Fe: 0.45%-0.55%, Cu: 0.52%-0.62%, Mn : 1.2% to 1.3%, Mg: <0.03%, Zn: <0.05%, Zr: <0.05%, Ti: 0.12% to 0.16%, and the balance aluminum.
[0022] In this embodiment, Mg, Zn and Zr are all impurity elements, and impurities within this range have no effect on the molding and metallurgical quality of the ingot, and the lower the content in actual production, the better.
specific Embodiment approach 2
[0023] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that it consists of Si: 0.79%, Fe: 0.50%, Cu: 0.57%, Mn: 1.25%, Mg: <0.03%, Zn : <0.05%, Zr: <0.05%, Ti: 0.13% and the balance of aluminum. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0024] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 is that it consists of Si: 0.82%, Fe: 0.52%, Cu: 0.60%, Mn: 1.27%, Mg: <0.03%, Zn : <0.05%, Zr: <0.05%, Ti: 0.15% and the balance of aluminum. Others are the same as in the first embodiment.
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