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Anode aluminum foil forming device

A chemical formation device and anode aluminum foil technology, applied in the direction of capacitor electrodes, capacitor parts, etc., can solve the problems of uneven concentration and temperature distribution of chemical forming liquid, poor cycle performance of chemical forming liquid, uneven oxide film thickness, etc., to improve performance and Its stability, temperature and concentration distribution uniformity are improved, and the effect of ensuring the continuity of production

Inactive Publication Date: 2016-06-08
YANGZHOU UNIV
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Problems solved by technology

[0022] In a word, the problems existing in the prior art are: the circulation performance of the chemical formation liquid in the existing chemical formation device is poor, the electrical conductivity is small, the interfacial tension is small, the concentration of the chemical formation liquid and the temperature distribution are uneven, resulting in more oxygen vacancies in the chemical formation film, Inhomogeneous oxide film thickness, small specific volume, poor bending performance, short life at high temperature

Method used

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Embodiment Construction

[0036] Such as figure 1 As shown, the anode aluminum foil formation device of the present invention includes a plurality of electrode plates 3 placed in the formation tank 6, an internal circulation pipe network 11 and a circulation pump 8 connected to the internal circulation pipe network, and also includes a A DC electromagnet 10, the DC electromagnet 10 is immersed in the chemical conversion solution 5 in the chemical conversion tank.

[0037] The reason for setting the DC electromagnet 10 is that the DC electromagnet will produce a magnetically induced eddy current effect, which will have the following effects on the formation:

[0038] (1) Enhance the mass transfer of charged ions. In the process of electrolytic corrosion superimposed external magnetic field, when charged particles such as H + and O 2- Lorentz force F will be applied when the cutting magnetic field line moves L (F L =J×B, J is the current density, B is the magnetic field strength), thus driving the p...

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Abstract

The invention discloses an anode aluminum foil forming device. The anode aluminum foil forming device comprises multiple electrode plates (3), inner circulation pipe networks (11) and a circulation pump (8) connected with the inner circulation pipe networks, wherein the electrode plates (3) and the inner circulation pipe networks (11) are arranged in a forming tank (6). The anode aluminum foil forming device further comprises direct-current electromagnets (10) arranged in the forming tank (6). The direct-current electromagnets (10) are soaked in forming liquid (5) in the forming tank. Multiple heat uniformization holes are evenly distributed in each electrode plate (3). The anode aluminum foil forming device has the beneficial effects that forming liquid circulating performance is good, electrical conductivity is high, interface tension is large, and the concentration and temperature of the forming liquid are uniform in distribution, so that the number of oxygen vacancies of forming films is small, the thickness of oxide films is uniform, the specific volume is large, bending performance is good, and the high-temperature service life is long.

Description

technical field [0001] The invention belongs to the technical field of corroded foil electrodes, in particular to an anode aluminum foil forming device with good chemical forming liquid circulation performance, high electrical conductivity, large interfacial tension, uniform concentration and temperature distribution of the forming liquid. Background technique [0002] Anode aluminum electrode foil is the core component of high voltage aluminum electrolytic capacitors. The formed foil is an important raw material for the preparation of anode aluminum electrode foil. The components of the chemical liquid used to prepare the chemical foil are generally boric acid and ammonium borate. Its formation mechanism can be represented by the following chemical equation: [0003] The ionization equilibrium when boric acid is added is: [0004] [0005] [0006] The ionization equilibrium when adding ammonium borate is: [0007] [0008] [0009] Anode and cathode reactio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/04H01G9/04
CPCC25F3/04H01G9/04
Inventor 张淮浩胡斌尹必跃赵静马坤松朱德秋
Owner YANGZHOU UNIV
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