Method for preparing aluminum foil for lithium battery
A lithium battery and aluminum foil technology, applied in metal rolling and other directions, can solve the problem of not meeting the performance requirements of lithium battery aluminum foil, and achieve the effect of small footprint, low production cost, energy saving and environmental protection
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Embodiment 1
[0034] Ingredients: adjust the composition and mass percentage of aluminum foil for lithium batteries: Fe: 0.39%; Si: 0.12%; Cu: 0.04%; Ti: 0.016%; the balance is Al and unavoidable impurities, of which, Mn+Mg+ Zn≤0.03%.
[0035] Smelting, casting and rolling process: heat and melt the above-mentioned lithium battery with aluminum foil to form an aluminum alloy melt; Cast and rolled into a 7.0mm billet. Among them, refining slag removal, grain refinement, degassing and slag removal, filtration treatment, continuous casting and rolling are as follows:
[0036] a. Refining and slag removal: transfer the aluminum alloy melt to a static furnace for 15 minutes, the temperature of the static furnace is 745°C, and then carry out multiple refining treatments, the first nitrogen refining treatment time is 20 minutes, after refining To remove surface scum, after the first refining treatment (that is, from the second refining treatment), the refining time is 22 minutes, and the interva...
Embodiment 2
[0045] Ingredients: Adjust the composition and mass percentage of aluminum foil for lithium batteries: Fe: 0.40%; Si: 0.13%; Cu: 0.05%; Ti: 0.018%; Mn: ≤0.03%; Mg: ≤0.03%; Zn: ≤0.03 %; the balance is Al and unavoidable impurities.
[0046] Smelting, casting and rolling process: heat and melt the above-mentioned lithium battery with aluminum foil to form an aluminum alloy melt; Cast and rolled into a 7.0mm billet. Among them, refining slag removal, grain refinement, degassing and slag removal, filtration treatment, continuous casting and rolling are as follows:
[0047] a. Refining and slag removal: Transfer the aluminum alloy melt to a static furnace for 12 minutes. The temperature of the static furnace is 750°C, and then perform multiple refining treatments. The time for the first nitrogen refining treatment is 18 minutes. After refining, remove the slag. To remove surface scum, after the first refining treatment (that is, from the second refining treatment), the refining t...
Embodiment 3
[0056] Ingredients: Adjust the composition and mass percentage of aluminum foil for lithium batteries: Fe: 0.38%; Si: 0.15%; Cu: 0.04%; Ti: 0.02%; Mn: ≤0.03%; Mg: ≤0.03%; Zn: ≤0.03 %; the balance is Al and unavoidable impurities.
[0057] Smelting, casting and rolling process: heat and melt the above-mentioned lithium battery with aluminum foil to form an aluminum alloy melt; Cast and rolled into a 7.0mm billet. Among them, refining slag removal, grain refinement, degassing and slag removal, filtration treatment, continuous casting and rolling are as follows:
[0058] a. Refining and slag removal: Transfer the aluminum alloy melt to a static furnace for 18 minutes. The temperature of the static furnace is 740°C, and then perform multiple refining treatments. The time for the first nitrogen refining treatment is 22 minutes. After refining, remove the slag To remove surface scum, after the first refining treatment (that is, from the second refining treatment), the refining tim...
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