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A process of increasing the speed of the vehicle by corrosion of the electronic light foil

An electronic and optical foil technology, applied in circuits, capacitors, electrical components, etc., can solve the problems of production efficiency limitation, restricting the production speed of corroded foil, etc., and achieve the effect of increasing the production speed

Active Publication Date: 2017-08-11
RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current continuity requirement and the maximum current that the light foil can withstand in the existing process greatly restrict the increase of the production speed of the corroded foil, which limits the production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Select the same batch of light foils with a normal operation of the sulfuric acid-hydrochloric acid corrosion system, and soak them in NaOH solution with a concentration of 20g / L for 40 seconds before etching, and the treatment temperature is 40°C. The primary and secondary pore baths are the same (the main components are HCl, H 2 SO 4 and Al 3+ , wherein free acid concentration is 7.05mol / L, total acid concentration is 7.85mol / L, Cl - concentration of 0.81mol / L), the temperature of primary and secondary pore baths are 71°C and 72.5°C respectively, and the average current density is 0.55A / cm 2 and 0.42A / cm 2 (The cathode graphite substrate is partially shielded with a tetrafluoroethylene sheet with holes, so that the current density is changed from the initial 1.0A / cm 2 Linear gradient to 0.1A / cm 2 , the secondary pore current density is changed from the initial 0.74A / cm 2 Linear gradient to 0.1A / cm 2 ). The main component of the hole reaming bath liquid is HNO ...

Embodiment 2

[0029] Select the same batch of light foils with a normal operation of the sulfuric acid-hydrochloric acid corrosion system, and soak them in NaOH solution with a concentration of 20g / L for 40 seconds before etching, and the treatment temperature is 40°C. The primary and secondary pore baths are the same (the main components are HCl, H 2 SO 4 and Al 3+ , wherein the free acid concentration is 7.5mol / L, the total acid concentration is 8.5mol / L, and the Cl- concentration is 0.85mol / L), the temperatures of the primary and secondary pore baths are 71°C and 72.5°C respectively, and the average current densities are respectively 0.55A / cm 2 and 0.42A / cm 2 (The cathode graphite substrate is partially shielded with a tetrafluoroethylene sheet with holes, so that the current density is changed from the initial 1.0A / cm 2 Linear gradient to 0.1A / cm 2 , the secondary pore current density is changed from the initial 0.74A / cm 2 Linear gradient to 0.1A / cm 2 ). The main component of th...

Embodiment 3

[0031] Select the same batch of light foils with a normal operation of the sulfuric acid-hydrochloric acid corrosion system, and soak them in NaOH solution with a concentration of 20g / L for 40 seconds before etching, and the treatment temperature is 40°C. The primary and secondary pore baths are the same (the main components are HCl, H 2 SO 4 and Al 3+ , wherein free acid concentration is 7.5mol / L, total acid concentration is 8.5mol / L, Cl - concentration of 0.85mol / L), the temperature of primary and secondary pore baths are 71°C and 72.5°C respectively, and the average current density is 0.55A / cm 2 and 0.42A / cm 2 (The cathode graphite substrate is partially shielded with a tetrafluoroethylene sheet with holes, so that the current density is changed from the initial 1.0A / cm 2 Linear gradient to 0.1A / cm 2 , the secondary pore current density is changed from the initial 0.74A / cm 2 Linear gradient to 0.1A / cm 2 ). The main component of the hole reaming bath liquid is HNO 3...

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Abstract

The invention relates to a turning speed improving process during corrosion for an electronic plain foil used for an aluminum electrolytic capacitor. On the existing process basis of an electronic plain foil sulfuric acid and hydrochloric acid corrosion system, hole forming which is carried out once becomes hole forming which is carried out twice in the corrosion process, original constant-current powering-up is changed to a linear gradient powering-up mode from a higher value to a lower value, the content of corrosion electrolyte is properly adjusted, and the problem that the turning speed is difficult to improve due to the facts that in the prior art, hole forming currents cannot be interrupted and due to largest bearing currents of the foil can be completely solved. According to the turning speed improving process, the production turning speed of an existing process is improved by 30-50%, and compared with the specific volume of a corrosion foil in the prior art, the specific volume of a produced corrosion foil is improved.

Description

technical field [0001] The invention relates to an etching process, which is applied in the production field of medium and high voltage corrosion foils for aluminum electrolytic capacitors. Background technique [0002] Electronic light foil for aluminum electrolytic capacitors is a special electronic material for basic components in the electronic information industry. According to the forecast of the Capacitor Industry Association, with the development of electronics, electric power, communications, household appliances and other industries, the demand for large-capacity, high-performance medium and high voltage electrolytic capacitors for energy-saving industrial equipment, information terminal equipment and electronic equipment will increase rapidly. For a long time, the market for medium and high-grade medium and high voltage aluminum electrolytic capacitors has been in short supply. In the world, a few companies such as Japan, Germany, and Italy represent the most adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/00H01G9/055
Inventor 杨华
Owner RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD