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Method and device for controlling electrolysis current density

A control device and electrolytic current technology, applied in the field of power supply, can solve the problems of presetting by production workers, difficulty in controlling current density, inability to accurately, quantify, and intuitively display and control the current density value, affecting the quality and stability of processed products, etc. , to achieve the effect of accurate quality control, ensure product quality and improve stability

Active Publication Date: 2012-01-11
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Claims
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AI Technical Summary

Problems solved by technology

On the circuit, the total current passing through the parts is easy to detect, but it is almost impossible to calculate the total surface area of ​​the parts processed each time, because the shape and number of parts oxidized each time will vary. Therefore, it brings insurmountable difficulties to the production workers to preset and control the current density
[0005] Since the various power supplies developed and produced in China do not have the function of displaying and controlling the current density, the on-site production workers can only roughly grasp the current density of the control parts during the electrolytic treatment process by experience, and cannot accurately, quantify, and control the current density value. Intuitive display and controls
Accurate process control cannot be achieved on product quality, thus affecting the stability of processed product quality

Method used

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  • Method and device for controlling electrolysis current density
  • Method and device for controlling electrolysis current density
  • Method and device for controlling electrolysis current density

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Experimental program
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Embodiment Construction

[0030] see figure 1 , the present invention is illustrated by anodizing as an example:

[0031] In the anodizing treatment circuit composed of current density control power supply, bath liquid, parts (or test board), line copper bar, anode part hanger and cathode lead plate, etc., the loop load is mainly caused by the surface of the part (or test board) The equivalent resistance of the corresponding bath solution, the equivalent capacitance of the oxide film formed on the surface of the part, and the leakage resistance of the oxide film;

[0032] For anodic oxidation, at the initial stage of energized oxidation treatment, the oxide film on the surface of the part (or test plate) has not yet formed, and the load characteristic of the entire circuit is purely resistive, that is, the load is the corresponding bath liquid on the surface of the part (or test plate) Equivalent resistance R x , the equivalent capacitance C of the oxide film at this time m =0, the leakage resistanc...

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Abstract

The invention discloses a method and a device for controlling electrolysis current density. Process parameters such as current, voltage, temperature, time (moment) and the like of a component are automatically acquired and recorded in real time by utilizing control system software and hardware such as an industrial computer or a singlechip; and a control system establishes the current density andrealizes automatic control of an anode in an oxidation process according to an established mathematical model formula, so that a field production worker can understand and grasp the current density of the component in an electrolysis processing process instantly, accurately and intuitively. Therefore, accurate quality control of a product component in a production process is realized and product quality stability is ensured.

Description

technical field [0001] The invention relates to a power supply, especially a DC power supply for electrolytic treatment. Background technique [0002] In the process of electrolytic treatment such as electroplating and anodic oxidation, the current density passing through the parts is an important process parameter in the process, which is directly related to whether the processed parts have insufficient film thickness or no coating or oxide film due to too small current density. Generation, or severe quality problems such as ablation due to excessive current density. [0003] However, the existing equipment only has display and control functions such as current, voltage, processing time, total ampere hours, constant current / constant voltage oxidation treatment method selection, etc., without the function of displaying current density, let alone directly controlling the magnitude of current density. [0004] According to the definition, the current density refers to the cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D21/12
Inventor 李国进
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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