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A continuous anodizing process for aluminum strip

A technology of anodic oxidation and anodic oxidation tank, which is applied in the direction of anodic oxidation, electrode, coating, etc., can solve the problems of time-consuming and labor-intensive, and achieve the effects of reducing dissolution, improving utilization rate, and shortening the sealing time

Active Publication Date: 2018-09-28
ZHEJIANG DILONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the above problems, in order to improve the deficiencies of the existing oxidation process, and to overcome the defects of the existing equipment oxidation tank technology that aluminum materials are time-consuming and labor-intensive for manual operation, and to provide a continuous anodic oxidation process for aluminum strips

Method used

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  • A continuous anodizing process for aluminum strip
  • A continuous anodizing process for aluminum strip
  • A continuous anodizing process for aluminum strip

Examples

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Embodiment 1

[0034] A continuous anodizing process for aluminum strips, comprising pre-treatment, anodizing and post-treatment;

[0035]The pretreatment includes degreasing, stripping, stripping and polishing. Degreasing is putting the aluminum strip into 15% nitric acid for 5 minutes; Ultrasonic treatment; stripping is 1 minute in a nitric acid solution with a mass concentration of 30%;

[0036] Anodizing includes the following steps: put the pre-treated aluminum strip into the anodizing tank, the aluminum strip is connected to the positive electrode of the oxidation power supply as an anode in the electrolyte of the anodizing tank, and the cathode of the oxidation tank is connected to the oxidation plate On, a current is passed under an applied voltage to maintain the electrochemical oxidation reaction, the electrolyte includes 115g / L of sulfuric acid, 5g / L of hydrogen peroxide, 10g / L of sodium acetate, 1g / L of zinc sulfate, and the voltage is 28V. The temperature is 23°C and the curren...

Embodiment 2

[0040] A continuous anodizing process for aluminum strips, comprising pre-treatment, anodizing and post-treatment;

[0041] Described pretreatment comprises degreasing, deplating, stripping and polishing, and degreasing is that the aluminum strip is put into 20% nitric acid for 3min; deplating is 3min in the sodium hydroxide solution that pH is 12, and simultaneously adds 80Khz Ultrasonic treatment; stripping is 3 minutes in a nitric acid solution with a mass concentration of 10%;

[0042] Anodizing includes the following steps: put the pre-treated aluminum strip into the anodizing tank, the aluminum strip is connected to the positive electrode of the oxidation power supply as an anode in the electrolyte of the anodizing tank, and the cathode of the oxidation tank is connected to the oxidation plate , pass a current under an applied voltage to maintain the electrochemical oxidation reaction, the electrolyte includes 110g / L of sulfuric acid, 8g / L of hydrogen peroxide, 8g / L of s...

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Abstract

Belonging to the technical field of aluminum anodic oxidation production, the invention in particular relates to an aluminum strip continuous anodic oxidation process. An anodic oxidation tank adopted by anodic oxidation is an integral structure, and comprises an upper working groove and a lower storage tank, the working groove is internally provided with a cathode grid lead plate, the storage tank is connected to the working groove through an electrolyte solution pump, and the working groove is internally provided with an overflow port for backflow to the storage tank. According to the invention, the anodic oxidation hole sealing step is improved, and the anodic oxidation time and hole sealing time are further shortened, thereby improving the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of aluminum anodic oxidation production, and in particular relates to a continuous anodic oxidation process for aluminum strips. Background technique [0002] Aluminum is one of the most widely used metal materials among non-ferrous metals. It has a series of powerful physical, chemical and processing properties, and it has a wide range of uses; high-tech products, high-end building decoration materials, transportation , aerospace, lighting and electronic products, etc. [0003] According to the different uses of aluminum materials, some properties are not ideal, such as surface properties such as hardness, wear resistance, and corrosion resistance. These properties can be processed by anodizing to expand the application range of aluminum materials and prolong service life. significance. [0004] The process of using an aluminum coil as an anode in an electrolyte solution and using electrolysis to form an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C25D17/12C25D11/18
Inventor 张小祥刘礼方敏
Owner ZHEJIANG DILONG NEW MATERIAL
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