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Anodic oxidation preparation method for antibacterial colorful aluminum or aluminum alloys

An anodic oxidation and aluminum alloy technology, applied in the direction of anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of increasing production cost, reducing production efficiency, increasing process steps, etc., to achieve high workpiece output efficiency, reduce Valueless consumption, the effect of simplifying process steps

Inactive Publication Date: 2019-09-03
苏州晶俊新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for industrial production, the increase in anodic oxidation and coloring process steps reduces production efficiency and increases production costs; although aluminum alloy materials with special composition ratios are functional, they also increase costs and are not conducive to industrial production

Method used

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  • Anodic oxidation preparation method for antibacterial colorful aluminum or aluminum alloys
  • Anodic oxidation preparation method for antibacterial colorful aluminum or aluminum alloys
  • Anodic oxidation preparation method for antibacterial colorful aluminum or aluminum alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Two pieces of 6063 aluminum alloy materials are selected as workpieces to be processed, and the specific steps of the preparation method are as follows:

[0030] S1. Put two pieces of 6063 aluminum alloy into a solution containing 40g / L sodium hydroxide and 20g / L sodium carbonate for alkaline washing to remove oil, at a temperature of 40°C, take out and wash with water after 2 minutes;

[0031] S2. Put the aluminum alloy into a solution containing 60g / L sulfuric acid and 10g / L sodium nitrate to neutralize the lye and emit light, take it out and wash it with water after 1 minute at room temperature;

[0032] S3, prepare electrolytic solution, electrolytic solution is 150g / L sulfuric acid, 5g / L silver nitrate, 10g / L cerium nitrate, 1g / L copper sulfate, 1g / L stannous sulfate, 15g / L magnesium sulfate, 10g / L boric acid, 1g / L ammonium sulfate solution;

[0033] S4. Immerse the two 6063 aluminum alloys with clean surfaces obtained in step 2 into the electrolyte obtained in st...

Embodiment 2

[0040] Two pieces of 5052 aluminum alloy materials are selected as workpieces to be processed, and the specific steps of the preparation method are as follows:

[0041] S1. Put two pieces of 5052 aluminum alloy into a solution containing 40g / L sodium hydroxide and 20g / L sodium carbonate for alkali washing to remove oil, at a temperature of 40°C, take out and wash with water after 2 minutes;

[0042] S2. Put the aluminum alloy into a solution containing 60g / L sulfuric acid and 10g / L sodium nitrate to neutralize the lye and emit light, take it out and wash it with water after 1 minute at room temperature;

[0043] S3, prepare electrolytic solution, electrolytic solution is 180g / L sulfuric acid, 1g / L silver nitrate, 1g / L cerium nitrate, 10g / L copper sulfate, 5g / L stannous sulfate, 3g / L magnesium sulfate, 22g / L boric acid, 6g / L ammonium sulfate solution;

[0044] S4. Immerse the two 6063 aluminum alloys with clean surfaces obtained in step 2 into the electrolyte obtained in step ...

Embodiment 3

[0051] Two pieces of pure aluminum materials are selected as workpieces to be processed, and the specific steps of the preparation method are as follows:

[0052] S1. Put two pieces of pure aluminum materials into a solution containing 40g / L sodium hydroxide and 20g / L sodium carbonate for alkaline washing to remove oil at a temperature of 40°C. After 2 minutes, take them out and wash them with water;

[0053] S2. Put two pieces of pure aluminum into a solution containing 60g / L sulfuric acid and 10g / L sodium nitrate to neutralize the lye and emit light, take it out and wash it with water after 1 minute at room temperature;

[0054] S3, preparation electrolyte, electrolyte is 200g / L sulfuric acid, 1.5g / L silver nitrate, 3g / L cerium nitrate, 6g / L copper sulfate, 8g / L stannous sulfate, 6g / L magnesium sulfate, 30g / L boric acid , 10g / L solution of ammonium sulfate;

[0055] S4. Immerse the two pieces of pure aluminum with clean surfaces obtained in step 2 into the electrolyte obtai...

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Abstract

The invention provides an anodic oxidation preparation method for antibacterial colorful aluminum or aluminum alloys, and in particular, relates to the technical field of surface treatment. The methodcomprises the following steps: (S1) the pretreatment is performed on aluminum or aluminum alloys; (S2) electrolyte is prepared; (S3) the two aluminum or aluminum alloy materials obtained in the step(S1) are taken to dip in the electrolyte obtained in the step (S2); and the temperature of the electrolyte is controlled within 15-25 DEG C; (S4) alternating direct current of 10-20 V is applied between the two aluminum or aluminum alloys; and the electrification time is 5-20 minutes; (S5) alternating current of 5-15 V is applied between the two aluminum or aluminum alloys treated in the step (S4); and the electrification time is 3-15 minutes; (S6) the hole sealing treatment is performed on the aluminum or aluminum alloy materials obtained in the step (S5); and (S7) two colorful aluminum or aluminum alloys with an antibacterial function are synchronously obtained by cleaning and drying. The method can prepare the colorful aluminum or aluminum alloys with the antibacterial function on the surfaces, meanwhile, can reduce operation procedures in the aluminum or aluminum alloy oxidation and coloring processes, and improves the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to an anodic oxidation preparation method of antibacterial and colored aluminum or aluminum alloy. Background technique [0002] Aluminum and aluminum alloys have many advantages such as high specific strength, good electrical and thermal conductivity, good corrosion resistance, and easy surface treatment. They are widely used in aviation, automobiles, building materials, electronics, industrial equipment and other fields. Metal materials for steel. At present, anodic oxidation and electrolytic coloring of aluminum or aluminum alloy materials is a very mature preparation method. The most widely used anodic oxidation coloring method in industry is to use sulfuric acid as the electrolyte oxidation, and then use inorganic or organic solution as the coloring liquid. [0003] However, during the process of anodic oxidation and coloring in the above-mentioned proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/14C25D11/16
CPCC25D11/08C25D11/14C25D11/16
Inventor 白晶程兆俊邵怡
Owner 苏州晶俊新材料科技有限公司
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