Composite core material aluminum alloy flat cast ingot and manufacturing method thereof
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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
Active Publication Date: 2021-04-02
NORTHEAST LIGHT ALLOY CO LTD
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[0003] The purpose of the present invention is to solve the problems of high crack tendency and low casting yield in the existing production of composite core aluminum alloy with high Ti content, and to provide a composite core aluminum alloy flat ingot and its manufacturing method
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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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Abstract
The invention discloses a composite core material aluminum alloy flat cast ingot and a manufacturing method thereof, and belongs to the field of alloy cast ingot manufacturing. The problems of high crack tendency and low casting yield in the existing method for producing a composite core material aluminum alloy with higher Ti content are solved. The materials are composed of Si, Fe, Cu, Mn, Mg, Zn, Zr, Ti and the balance aluminum. The preparation method comprises the following steps of 1, weighing the materials, 2, smelting to obtain an aluminum alloy melt, 3, preparing a casting melt, and 4,forming. According to the composite core material aluminum alloy flat cast ingot and the manufacturing method thereof, the problems that in the prior art, when the composite core material aluminum alloy with the high Ti content is produced, the crack tendency is large, and consequently casting beginning aluminum leakage and hanging defects are caused are effectively solved, and forming is guaranteed; the cast ingot is good in surface forming, free of surface defects, cracks, slag inclusion and air holes, and the rate of finished products reaches 95%; the internal metallographic structure of the cast ingot manufactured through the method is free of looseness, overall uniform and free of coarse grain defects, and the internal performance reaches the standard; and the preparation method is suitable for manufacturing the composite core material aluminum alloy flat cast ingot.
Description
technical field [0001] The invention belongs to the field of alloy ingot manufacture, and in particular relates to a composite core aluminum alloy flat ingot and a manufacturing method thereof. Background technique [0002] The composite core aluminum alloy has a series of outstanding advantages such as high strength, resistance to exfoliation corrosion, strong stress corrosion cracking ability, excellent fracture toughness and fatigue resistance, and has important application value in automobiles. Existing production of composite core aluminum alloys with high Ti content has a high tendency to crack, and it is easy to produce cracked waste products during the casting process, and even leak aluminum at the beginning of casting, resulting in safety accidents caused by molten aluminum splashing, and the casting yield is extremely low. Ingot yield is only 80%. In order to improve the ingot yield and production efficiency and meet the needs of composite profile processing, rese...
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