Manufacturing method of sheet for electric vehicle body
An electric vehicle and a manufacturing method technology are applied in the field of manufacture of sheets for electric vehicle bodies, which can solve the problems of poor stamping formability of aluminum alloy sheets and cannot meet the production requirements of electric vehicle body components, and achieve the advantages of stamping formability, high plasticity, The effect of improving the quality of the board
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Embodiment 1
[0017] The chemical composition and mass percentages of the aluminum alloy used to manufacture the electric vehicle body in this embodiment are: Si0.8%, Mg1.33%, Cu0.3%, Mn0.9%, Fe0.28%, Zn0.15%, Cr0. 11%, Ti0.05%, the total of other impurities ≤0.15%, and the balance is Al; among them, Mg is industrial pure magnesium, Cu is electrolytic copper, and Zn is industrial pure zinc.
[0018] The manufacturing method specifically includes the following steps:
[0019] A. After distributing the aluminum alloy components, melt and cast them into ingots, and the casting temperature is 685-690°C;
[0020] B. Saw the two ends of the ingot, and then mill the surface of the ingot to make the surface smooth and free of cracks;
[0021] C. Carry out bipolar homogenization treatment to the ingot, the primary treatment temperature is 450-460°C, the treatment time is 6 hours, the secondary treatment temperature is 520-530°C, and the treatment time is 10 hours;
[0022] D. Hot rolling the treat...
Embodiment 2
[0026] The chemical composition and mass percentages of the aluminum alloy used to manufacture the electric vehicle body in this embodiment are: Si1.2%, Mg1.1%, Cu0.54%, Mn0.78%, Fe0.2%, Zn0.2%, Cr0. 11%, Ti0.15%, the remaining impurities total ≤0.15%, and the balance is Al; among them, Mg is industrial pure magnesium, Cu is electrolytic copper, and Zn is industrial pure zinc.
[0027] The manufacturing method specifically includes the following steps:
[0028] A. After distributing the aluminum alloy components, melt and cast them into ingots at a casting temperature of 688-692°C;
[0029] B. Saw the two ends of the ingot, and then mill the surface of the ingot to make the surface smooth and free of cracks;
[0030] C. Carry out bipolar homogenization treatment to the ingot, the primary treatment temperature is 455-465°C, the treatment time is 6 hours, the secondary treatment temperature is 525-533°C, and the treatment time is 12 hours;
[0031] D. Hot rolling the treated i...
Embodiment 3
[0035] The chemical composition and mass percentage of the aluminum alloy used for manufacturing the electric vehicle body in this embodiment are: Si1.45%, Mg0.8%, Cu0.6%, Mn0.5%, Fe0.1%, Zn0.18%, Cr0. 15%, Ti0.1%, the remaining impurities total ≤0.15%, and the balance is Al; among them, Mg is industrial pure magnesium, Cu is electrolytic copper, and Zn is industrial pure zinc.
[0036] The manufacturing method specifically includes the following steps:
[0037] A. After distributing the aluminum alloy components, melt and cast them into ingots, and the casting temperature is 690-695°C;
[0038] B. Saw the two ends of the ingot, and then mill the surface of the ingot to make the surface smooth and free of cracks;
[0039] C. Carry out bipolar homogenization treatment to the ingot, the primary treatment temperature is 450-470°C, the treatment time is 5 hours, the secondary treatment temperature is 530-540°C, and the treatment time is 11 hours;
[0040] D. Hot rolling the trea...
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