Annealing method in high-voltage electronic aluminum-foil production for high-capacity high-strength capacitor
An electronic aluminum foil, high-strength technology, applied in the direction of metal rolling, coating, anti-corrosion coating, etc., can solve the problems of uneven casting structure, shorten the production cycle, etc., to avoid coarse grains, eliminate uneven casting, and avoid moisture The effect of residual oxidation
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Embodiment 1
[0045] The annealing method in the production of medium and high voltage electronic aluminum foil for high-capacity and high-strength capacitors includes the following steps:
[0046] Preparation of cold rolled coils:
[0047] ①Casting: After smelting, heat preservation, refining and standing still, the raw materials of high-purity molten aluminum casting are used to produce flat ingots by semi-continuous casting. The casting temperature is 695°C, and the formed flat ingots are obtained by rapid cooling;
[0048] ② Homogenization: Homogenize the shaped slab obtained in the above step through an annealing furnace, the homogenization temperature is 570°C, the homogenization time is 19h, and air-cool to room temperature after homogenization;
[0049] ③Hot rolling: The slab after the homogenization treatment in the previous step is hot-rolled by an integrated roughing and finishing rolling unit. The hot-rolling starting temperature is 520°C and the finishing rolling temperature is...
Embodiment 2
[0057] The annealing method in the production of medium and high voltage electronic aluminum foil for high-capacity and high-strength capacitors includes the following steps:
[0058] The preparation of cold-rolled coils is the same as in Example 1;
[0059] 1) Cleaning and intermediate annealing: The cold-rolled coils after cold rolling are cleaned with deionized water containing alkaline additives, rinsed with deionized water, the water temperature is controlled at 75°C, and the outlet is dried with high-pressure air Squeeze dry with a squeeze roller, and carry out intermediate annealing in a belt-type continuous air cushion furnace. The annealing temperature is 300°C, and the annealing speed is 40m / min. After annealing, it is air-cooled to room temperature;
[0060] 2) Foil rolling: 7% deformation is applied through foil rolling, the finished product pass adopts bright rolling with a reduction of ≤2% in the finished pass, the foil rolling speed is 150m / min, and the thicknes...
Embodiment 3
[0065] The annealing method in the production of medium and high voltage electronic aluminum foil for high-capacity and high-strength capacitors includes the following steps:
[0066] The preparation of cold-rolled coils is the same as in Example 1;
[0067] 1) Cleaning and intermediate annealing: The cold-rolled coils after cold rolling are cleaned with deionized water containing alkaline additives, rinsed with deionized water, the water temperature is controlled at 70°C, and the outlet is dried with high-pressure air. Squeeze the dry roll, and carry out intermediate annealing in the continuous air cushion furnace with the belt type, the annealing temperature is 350 ℃, the annealing speed is 30m / min, and air cooling to room temperature after annealing;
[0068] 2) Foil rolling: apply 45% deformation through foil rolling, the finished product pass adopts bright rolling with a reduction of 3% in the finished pass, the foil rolling speed is 200m / min, and the thickness of the fin...
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