Electrode foil feed liquid, and manufacturing method for high strength and low pressure formed foil

A manufacturing method and electrode foil technology, applied in anodizing and other directions, can solve the problems of affecting mechanical strength and low production efficiency, and achieve high production efficiency and good economic benefits.

Inactive Publication Date: 2018-12-18
NANTONG HAIXING ELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is limited by the corrosion of the foil itself, it is difficult to withstand too much electricity, and the production efficiency is very low; the second type is to use an additional liquid feeder to supply electricity to the formation tank at different stages of formation, and the production efficiency is greatly improved. But at the same time As the aluminum foil passes through the feed slot, H 2 Inability to overflow causes the finished product to be affected by hydrogen embrittlement and its mechanical strength

Method used

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  • Electrode foil feed liquid, and manufacturing method for high strength and low pressure formed foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] a) Put the low-pressure corrosion foil in 7wt% ammonium adipate solution at a temperature of 70°C and a current density of 20mA / cm 2 , the voltage is 5v, and anodized for 5 minutes to obtain a primary formed foil;

[0013] b) Place the primary formed foil in 7wt% ammonium adipate solution at a temperature of 70°C and a current density of 20mA / cm 2 , the voltage is 10v, and anodized for 5 minutes to obtain a secondary foil, and the first two stages are powered by conductive rollers;

[0014] c) Place the secondary formed foil in a solution of 5wt% ammonium adipate and 0.005wt% sodium phosphate in the feed tank at a temperature of 30°C and a current density of 30mA / cm 2 , the foil is the cathode, and after 5 minutes of treatment, the feeder tank supplies electricity to the third, fourth and fifth formation tanks in the latter stage;

[0015] d) Place the fed formed foil in a 7wt% ammonium adipate solution at a temperature of 70°C and a current density of 20mA / cm 2 , th...

Embodiment 2

[0023] a) Put the low-pressure corrosion foil in 10wt% ammonium adipate solution at a temperature of 75°C and a current density of 30mA / cm 2 , the voltage is 10v, and anodized for 7 minutes to obtain a primary formed foil;

[0024] b) Place the primary formed foil in 10wt% ammonium adipate solution at a temperature of 75°C and a current density of 30mA / cm 2 , the voltage is 20v, and anodized for 7 minutes to obtain a secondary foil;

[0025] c) Place the secondary formed foil in a 10wt% ammonium adipate solution at a temperature of 75°C and a current density of 30mA / cm 2 , the voltage is 30v, and anodized for 7 minutes to obtain a three-stage forming foil, and the first three stages of formation are powered by conductive rollers;

[0026] d) Place the tertiary formed foil in 7wt% ammonium adipate and 0.01wt% sodium tetraborate and potassium phosphate solution at a temperature of 30°C and a current density of 50mA / cm 2 , the foil is the cathode, and after 3 minutes of treatm...

Embodiment 3

[0034] a) Put the low-pressure corrosion foil in 15wt% ammonium adipate solution, temperature 80°C, current density 50mA / cm 2 , the voltage is 20v, anodized for 10min to obtain a primary foil, and the primary is powered by a conductive roller;

[0035] b) Place the first-grade formed foil in a solution of 5wt% ammonium adipate and 0.03wt% sodium adipate and sodium phosphate in the feed tank at a temperature of 30°C and a current density of 80mA / cm 2 , the foil is the cathode, and it is treated for 3 minutes. The feeder slot supplies electricity to the second and third formation slots in the rear stage;

[0036] c) Place the formed foil in 15wt% ammonium adipate solution at a temperature of 80°C and a current density of 50mA / cm 2 , the voltage is 40v, and anodized for 10min to obtain secondary foil;

[0037] d) Place the secondary formed foil in a 15wt% ammonium adipate solution at a temperature of 80°C and a current density of 50mA / cm 2 , the voltage is 60v, and anodized f...

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Abstract

The invention discloses an electrode foil feed liquid, and a manufacturing method for high strength and low pressure formed foil. The electrode foil feed liquid is an ammonium adipate aqueous solutioncontaining alkali metal salt; the manufacturing method for the high strength and low pressure formed foil comprises the steps that the feed liquid is used for supplying the required power for five-stage forming treatment. The formed foil obtained with the feed liquid and the manufacturing method has the features of high bending and tensile strength, and is applicable for reduced capacitors represented by V-CHIP; and meanwhile the production efficiency is high, and the economic benefits are good.

Description

technical field [0001] The invention relates to the field of electronic material processing, in particular to a method for manufacturing electrode foil feed liquid and high-strength low-pressure forming foil. Background technique [0002] There are generally two types of forming methods in the manufacture of low-voltage forming foils for aluminum electrolytic capacitors: one is to supply electricity to the foil in the latter stage through aluminum rollers or silver rollers. This method is limited by the corrosion of the foil itself, it is difficult to withstand too much electricity, and the production efficiency is very low; the second type is to use an additional liquid feeder to supply electricity to the formation tank at different stages of formation, and the production efficiency is greatly improved. But at the same time As the aluminum foil passes through the feed slot, H 2 The inability to spill causes the finished product to suffer from hydrogen embrittlement affecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/12C25D11/06
CPCC25D11/06C25D11/12
Inventor 周小兵吴春春
Owner NANTONG HAIXING ELECTRONICS
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