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Surface treatment method for aluminum and aluminum alloy workpieces

A surface treatment, aluminum alloy technology, applied in the direction of surface reaction electrolytic coating, anodic oxidation, electrolytic coating, etc., can solve the intergranular corrosion of aluminum and aluminum alloy, and the wear resistance of aluminum alloy conversion film layer has not been greatly improved , Low surface hardness and other problems, to achieve the effect of prolonging the service life, promoting the use value and improving the corrosion resistance

Inactive Publication Date: 2017-10-13
肥西县通力机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used method is anodic oxidation method, which forms a conversion film on the surface of aluminum alloy by electrochemical method. Although this method can improve the corrosion resistance of aluminum alloy, the wear resistance of aluminum alloy conversion film layer has not been greatly improved. Moreover, this layer of oxide film is easily corroded by strong acid and strong alkali. At the same time, aluminum and aluminum alloys are prone to intergranular corrosion, and the surface hardness is low and not wear-resistant.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for surface treatment of aluminum and aluminum alloy workpieces, comprising the steps of:

[0031] (1) Degreasing treatment:

[0032] Put the aluminum or aluminum alloy workpiece into the degreasing treatment solution for degreasing treatment, take it out after 30 minutes and rinse it with clean water once before use;

[0033] (2) Pickling treatment:

[0034] Put the aluminum or aluminum alloy workpiece processed in step (1) into the acid solution for 8 minutes, take it out, rinse it with clean water, and set it aside;

[0035] (3) Alkali washing treatment:

[0036] Put the aluminum or aluminum alloy workpiece treated in step (2) into the alkali solution for 1 minute, take it out, rinse it with clean water, and set it aside;

[0037] (4) Anodizing treatment:

[0038] Put the aluminum or aluminum alloy workpiece processed in step (3) into the electrolyte for anodic oxidation treatment, and control the current density to 1A / dm 2 , the temperature of the elec...

Embodiment 2

[0052] A method for surface treatment of aluminum and aluminum alloy workpieces, comprising the steps of:

[0053] (1) Degreasing treatment:

[0054] Put the aluminum or aluminum alloy workpiece into the degreasing treatment solution for degreasing treatment, take it out after 35 minutes and rinse it with clean water once before use;

[0055] (2) Pickling treatment:

[0056] Put the aluminum or aluminum alloy workpiece treated in step (1) into the acid solution for 10 minutes, take it out, rinse it with clean water, and set it aside;

[0057] (3) Alkali washing treatment:

[0058] Put the aluminum or aluminum alloy workpiece processed in step (2) into the alkali solution for 1.5 minutes, take it out, rinse it with clean water, and set it aside;

[0059] (4) Anodizing treatment:

[0060] Put the aluminum or aluminum alloy workpiece processed in step (3) into the electrolyte for anodic oxidation treatment, and control the current density to 1.2A / dm 2 , the temperature of the ...

Embodiment 3

[0074] A method for surface treatment of aluminum and aluminum alloy workpieces, comprising the steps of:

[0075] (1) Degreasing treatment:

[0076] Put the aluminum or aluminum alloy workpiece into the degreasing treatment solution for degreasing treatment, take it out after 40 minutes and rinse it with clean water once before use;

[0077] (2) Pickling treatment:

[0078] Put the aluminum or aluminum alloy workpiece processed in step (1) into the acid solution for 13 minutes, take it out, rinse it with clean water, and set it aside;

[0079] (3) Alkali washing treatment:

[0080] Put the aluminum or aluminum alloy workpiece treated in step (2) into the alkali solution for 2 minutes, take it out, rinse it with clean water, and set it aside;

[0081] (4) Anodizing treatment:

[0082] Put the aluminum or aluminum alloy workpiece processed in step (3) into the electrolyte for anodic oxidation treatment, and control the current density to 1.5A / dm 2 , the temperature of the ...

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PUM

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Abstract

The invention discloses a method for surface treatment of aluminum and aluminum alloy workpieces, comprising the following steps: (1) degreasing treatment, (2) pickling treatment, (3) alkali washing treatment, (4) anodic oxidation treatment, (5) Irradiation treatment, (6) soaking treatment, (7) drying treatment. The invention reasonably matches and improves the surface treatment method of aluminum and aluminum alloy workpieces, effectively improves the corrosion resistance and wear resistance characteristics of the workpieces, prolongs the service life of the workpieces, and has good popularization and use value.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a surface treatment method for aluminum and aluminum alloy workpieces. Background technique [0002] Construction machinery is an important part of the equipment industry. In a nutshell, all the mechanical equipment necessary for comprehensive mechanized construction projects required for earthwork construction projects, road surface construction and maintenance, mobile lifting and loading and unloading operations, and various construction projects are called construction machinery. The use of aluminum and aluminum alloy workpieces is inevitable in the processing and manufacturing of construction machinery, which has a series of advantages such as low density, high specific strength, good corrosion resistance and formability, and low cost. However, traditional aluminum and aluminum alloy materials usually cannot meet the performance requirements of the ...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/16C25D11/24C25D11/18C23G1/12C23G1/22
CPCC25D11/08C23G1/125C23G1/22C25D11/16C25D11/18C25D11/246
Inventor 徐群张飞李少宝张维林董万斌
Owner 肥西县通力机械有限公司