Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing anodic oxidation film of aluminum alloy by tartaric acid anodic oxidation

An anodic oxidation film and anodic oxidation technology, which is applied in the field of tartaric acid anodic oxidation, can solve the problems of not particularly excellent performance of aluminum alloy anodic oxidation film, pollution and large energy consumption, and achieve enhanced anti-pollution ability, compactness, and corrosion resistance Strong, high hardness effect

Active Publication Date: 2015-07-29
CHINA JILIANG UNIV +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the pollution and energy consumption in the production process of these aluminum anodizing processes are relatively large, and the performance of the aluminum alloy anodic oxidation film is not particularly excellent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Immerse the aluminum alloy parts in 28g / L P3 Almeco 36 alkaline solution (mixed solution of sodium carbonate and sodium borate) at 65°C for 10 minutes, then wash with water for 2 minutes; in 60°C 36g / L TURCO Aluminetch 2 alkaline solution (mixed solution of sodium hydroxide and sodium phosphite) etching for 2~3 minutes, washing with water for 2 minutes; pickling in 190ml / L TURCO Liquid Smut Go NC acidic solution (mixed solution of hydrofluoric acid and nitric acid) at 50°C for 10 minutes , wash with water for 2 minutes; observe the continuous water film on the surface of the aluminum alloy and then carry out anodic oxidation. Put the pretreated aluminum alloy parts in an anodic oxidation solution: tartaric acid 80g / L, citrate 20ml / L; temperature 37°C, voltage 16V, oxidation time 25 minutes. The pure aluminum sheet is used as the cathode, and the air is stirred during the anodizing process. Wash with water after oxidation, and seal until the water film on the surface is...

Embodiment 2

[0027] Immerse the aluminum alloy parts in 28g / L P3 Almeco 36 alkaline solution (mixed solution of sodium carbonate and sodium borate) at 65°C for 10 minutes, then wash with water for 2 minutes; in 60°C 36g / L TURCO Aluminetch 2 alkaline solution (mixed solution of sodium hydroxide and sodium phosphite) etching for 2~3 minutes, washing with water for 2 minutes; pickling in 190ml / L TURCO Liquid Smut Go NC acidic solution (mixed solution of hydrofluoric acid and nitric acid) at 50°C for 10 minutes , wash with water for 2 minutes; observe the continuous water film on the surface of the aluminum alloy and then carry out anodic oxidation. Put the pretreated aluminum alloy parts in an anodic oxidation solution: tartaric acid 100g / L, citrate 20ml / L; temperature 37°C, voltage 18V, oxidation time 25 minutes. The pure aluminum sheet is used as the cathode, and the air is stirred during the anodizing process. Wash with water after oxidation, and seal until the water film on the surface i...

Embodiment 3

[0030] Immerse the aluminum alloy parts in 28g / L P3 Almeco 36 alkaline solution (mixed solution of sodium carbonate and sodium borate) at 65°C for 10 minutes, then wash with water for 2 minutes; in 60°C 36g / L TURCO Aluminetch 2 alkaline solution (mixed solution of sodium hydroxide and sodium phosphite) etching for 2~3 minutes, washing with water for 2 minutes; pickling in 190ml / L TURCO Liquid Smut Go NC acidic solution (mixed solution of hydrofluoric acid and nitric acid) at 50°C for 10 minutes , wash with water for 2 minutes; observe the continuous water film on the surface of the aluminum alloy and then carry out anodic oxidation. Put the pretreated aluminum alloy parts in an anodic oxidation solution: tartaric acid 80g / L, citrate 20ml / L; temperature 37°C, voltage 16V, oxidation time 30 minutes. The pure aluminum sheet is used as the cathode, and the air is stirred during the anodizing process. Wash with water after oxidation, and seal until the water film on the surface is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing an aluminum alloy anodic oxidation film by tartaric acid anodic oxidation. The method comprises the following steps of A, aluminum alloy anodic oxidation pretreatment; B, aluminum alloy anodic oxidation; and C, sealing of an anodic oxide film. The method has the following advantages that (1) pretreatments such as alkaline degreasing, alkaline washing and scouring are carried out before surface treatment; and the anti-pollution capacity and the compactness of the surface of the anodic oxide film are strengthened; (2) the anodic oxide film is even in hole density, high in hardness and good in abrasive resistance; (3) the anodic oxide film is strong in resistance to corrosion after being sealed; and (4) the technical scheme is simple to operate, energy-saving, environment-friendly, and easy to industrialize.

Description

technical field [0001] The invention relates to tartaric acid anodic oxidation technology, in particular to a method for preparing aluminum alloy anodic oxidation film by tartaric acid anodic oxidation. Background technique [0002] Due to its high strength / weight ratio, easy forming process and excellent physical and chemical properties, aluminum alloy material has become the second largest metal material used in industry after steel. However, aluminum alloy materials have low hardness, poor corrosion resistance and corrosion resistance, and abrasion damage often occurs. Corresponding surface treatment is often required before use to meet its adaptability and safety to the environment, reduce abrasion and prolong its service life. In the industry, anodic oxidation is more and more widely used to form a dense oxide film on the surface of aluminum alloys, so as to significantly improve the corrosion resistance, wear resistance and decorative properties of aluminum alloys. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/12C25D11/16C25D11/10
Inventor 卫国英
Owner CHINA JILIANG UNIV