Battery aluminum foil with high mechanical property and high conductivity and production method thereof
A technology of electrical conductivity and mechanical properties, which is applied in the field of battery aluminum foil and its production, can solve the problems of high strength and other contradictions, and achieve the goals of improving electrical conductivity and surface wetting performance, improving tensile strength, improving mechanical properties and stability Effect
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Embodiment 1
[0021] a. Smelting: Smelting the following battery aluminum foil alloy components, the mass percentage of each element in the battery aluminum foil alloy components is: Si: 0.07%, Fe: 0.05%, Cu: 0.3%, Mn: 0.03%, Zn: 0.01 %, Ti: 0.02%, Ce: 0.02%, others 0.001%, Al: 99.60%.
[0022] b. Casting and rolling: the thickness of casting and rolling is 6.0mm.
[0023] c. Cold rolling: rolling from 6.0mm thickness to 1.8mm, heating the 1.8mm thickness aluminum coil to 500~550℃ in an annealing furnace and holding it for 12h for intermediate annealing, and then rolling to 0.2mm thickness after intermediate annealing and cooling. During the cold rolling process, the pass distribution is 6mm→3.5mm→1.8mm→0.9mm→0.45mm→0.2mm, the speed is controlled at 200m / min~500m / min, the oil temperature is kept at 50~60℃, and the rolling force is 250~320t.
[0024] d. Foil rolling: starting from 0.2mm thickness, the finished product thickness of foil rolling is 0.013mm; the pass distribution is 0.2mm→0.1m...
Embodiment 2
[0029] a. Smelting: Smelting the following battery aluminum foil alloy components, the mass percentage of each element in the battery aluminum foil alloy components is: Si: 0.02%, Fe: 0.18%, Cu: 0.02%, Mn: 0.03%, Zn: 0.01 %, Ti: 0.03%, Ce: 0.02%, others 0.001%, Al: 99.60%.
[0030] b. Casting and rolling: the thickness of casting and rolling is 7.0mm.
[0031] c. Cold rolling: rolling from 7.0mm thickness to 2.0mm, heating the 2.0mm thickness aluminum coil to 500~550℃ in an annealing furnace and holding it for 15h for intermediate annealing, and then rolling to 0.3mm thickness after intermediate annealing and cooling. The pass distribution in the cold rolling process is 7mm→4mm→2.0mm→1.1mm→0.55mm→0.3mm, the speed is controlled at 200m / min~450m / min, the oil temperature is kept at 50~60℃, and the rolling force is 250~300t.
[0032] d. Foil rolling: starting from the thickness of 0.3mm, the thickness of the finished product is rolled to a thickness of 0.013mm. The pass distribu...
Embodiment 3
[0037] a. Smelting: Smelting the following battery aluminum foil alloy components, the mass percentage of each element in the battery aluminum foil alloy components is: Si: 0.07%, Fe: 0.05%, Cu: 0.3%, Mn: 0.03%, Zn: 0.01 %, Ti: 0.02%, Ce: 0.02%, others 0.001%, Al: 99.60%.
[0038] b. Casting and rolling: the thickness of casting and rolling is 6.0mm.
[0039] c. Cold rolling: rolling from 6.0mm thickness to 3.8mm, heating the 3.8mm thickness aluminum coil to 500~550℃ in an annealing furnace and holding it for 10h for intermediate annealing, after intermediate annealing, rolling to 0.45mm thickness for two For the second annealing, the temperature was raised to 200~300 °C and kept for 12h during the second annealing, and the thickness was rolled to 0.2mm after the second annealing and cooling. The pass distribution in the cold rolling process is 6mm→3.8mm→1.8mm→0.9mm→0.45mm→0.2mm, the speed is controlled at 200m / min~500m / min, the oil temperature is kept at 50~60℃, and the roll...
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