Six-level forming method of medium and high voltage aluminum electrolytic capacitor anode foil
An aluminum electrolytic capacitor and the technology of the formation method, which are applied in the direction of capacitor electrodes, capacitor parts, and metal surface removal regulations, can solve the problems of low capacity and low bending strength of the formed foil, and achieve small volume, high bending strength, long life effect
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Embodiment 1
[0030] Put the aluminum foil after electrolytic corrosion treatment through the aluminum feeding roller and put it in the pure water with the temperature of 96°C, the conductivity of 9μs and the pH of 5 for 10 minutes, take it out, wash it, and put it in a place containing 0.2% phosphate, 0.3 % citric acid electrolyte in the primary chemical tank, at 85°C, 106V, 25mA / cm 2 Under the condition of 8 minutes, the primary chemical aluminum foil is obtained; take it out and wash it, and put it in the secondary chemical chemical tank containing the electrolyte solution of 0.1% phosphate, 0.2% citric acid and 0.1% azelaic acid salt, at 85 ℃ , 159V, 25mA / cm 2 Under the conditions of 4 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and put it in the tertiary chemical compound containing 0.05% phosphomolybdate, 0.2% citric acid, 0.3% adipate, 2% boric acid electrolyte In the tank, at 85°C, 370V, 25mA / cm 2 Under the condition of 8 minutes, the three-...
Embodiment 2
[0032] After the electrolytic corrosion treatment, the aluminum foil is placed in pure water with a temperature of 95°C, a conductivity of 7 μs, and a pH of 6 for 5 minutes after passing through an aluminum feed roller. % citric acid electrolyte in the primary chemical tank, at 80°C, 100V, 20mA / cm 2 Under the condition of 15 minutes, the primary aluminum foil is obtained; take it out and wash it, and put it in the secondary chemical formation tank containing the electrolyte solution of 0.3% phosphate, 0.4% citric acid and 0.3% azelaic acid salt, at 80 ℃ , 130V, 20mA / cm 2 Under the conditions of 15 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and put it in the tertiary chemical compound containing 0.1% phosphomolybdate, 0.3% citric acid, 0.6% adipate, 4% boric acid electrolyte In the tank, at 80°C, 300V, 20mA / cm 2 Under the condition of 13 minutes, the third-grade aluminum foil is obtained; take it out and wash it, put it into a liquid f...
Embodiment 3
[0034] After the electrolytic corrosion treatment, the aluminum foil was placed in pure water with a temperature of 98 °C, a conductivity of 6 μs, and a pH of 5.5 for 15 minutes after passing through an aluminum feed roller. % citric acid electrolyte in the primary chemical tank, at 100°C, 110V, 50mA / cm 2 Under the condition of 10 minutes, the first-grade aluminum foil is obtained; take it out and wash it, and put it in the secondary formation tank containing the electrolyte solution of 1% phosphate, 1% citric acid and 1% azelaic acid salt, at 100 ℃, 250V, 50mA / cm 2 Under the conditions of 13 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and place it in the tertiary chemical compound containing 1% phosphomolybdate, 1% citric acid, 1% adipate, and 10% boric acid electrolyte In the tank, at 100°C, 400V, 50mA / cm 2 Under the condition of 10 minutes, the third-grade aluminum foil is obtained; take it out and wash it, put it into the liquid fe...
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