Surface anti-corrosion treatment method of aluminum alloy pump cover

An anti-corrosion treatment, aluminum alloy technology, applied in the direction of coating, etc., to achieve the effect of reducing self-corrosion current density, improving corrosion resistance and surface hardness, and promoting formation speed and quality

Active Publication Date: 2017-11-28
ANHUI TENGLONG PUMP VALVE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With people's continuous pursuit of product performance, the corresponding processing technology and effect need to be continuously improved, and the effect of the existing organosilane treatment technology still needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A surface anticorrosion treatment method for an aluminum alloy pump cover, comprising the steps of:

[0033] (1) Cleaning treatment:

[0034] Rinse the surface of the aluminum alloy pump cover with deionized water first, clean and remove surface dust, debris and impurities before use;

[0035] (2) Degreasing and degreasing treatment:

[0036] Put the aluminum alloy pump cover treated in step (1) into the degreasing and degreasing solution for immersion treatment. During this period, heat to keep the temperature of the degreasing and degreasing solution at 36°C. After soaking for 25 minutes, take out the aluminum alloy pump cover, and then use it Standby after rinsing once with deionized water; the degreasing and degreasing liquid is composed of the following parts by weight: 5 parts of alkylphenol polyoxyethylene ether, 12 parts of sodium hexametaphosphate, 4 parts of fatty alcohol polyoxyethylene ether, 20 parts Acetone, 280 parts of water;

[0037] (3) Acid-base cl...

Embodiment 2

[0056] A surface anticorrosion treatment method for an aluminum alloy pump cover, comprising the steps of:

[0057] (1) Cleaning treatment:

[0058] Rinse the surface of the aluminum alloy pump cover with deionized water first, clean and remove surface dust, debris and impurities before use;

[0059] (2) Degreasing and degreasing treatment:

[0060] Put the aluminum alloy pump cover treated in step (1) into the degreasing and degreasing solution for immersion treatment. During this period, heat to keep the temperature of the degreasing and degreasing solution at 40°C. After soaking for 28 minutes, take out the aluminum alloy pump cover, and then use it Standby after rinsing once with ionized water; the degreasing and degreasing liquid is composed of the following parts by weight: 6 parts of alkylphenol polyoxyethylene ether, 13 parts of sodium hexametaphosphate, 5 parts of fatty alcohol polyoxyethylene ether, 22 parts Acetone, 290 parts of water;

[0061] (3) Acid-base clea...

Embodiment 3

[0080] A surface anticorrosion treatment method for an aluminum alloy pump cover, comprising the steps of:

[0081] (1) Cleaning treatment:

[0082] Rinse the surface of the aluminum alloy pump cover with deionized water first, clean and remove surface dust, debris and impurities before use;

[0083] (2) Degreasing and degreasing treatment:

[0084] Put the aluminum alloy pump cover treated in step (1) into the degreasing and degreasing solution for immersion treatment. During this period, heat to keep the temperature of the degreasing and degreasing solution at 42°C. After soaking for 30 minutes, take out the aluminum alloy pump cover, and then use it Standby after rinsing once with deionized water; the degreasing and degreasing liquid is composed of the following parts by weight: 7 parts of alkylphenol polyoxyethylene ether, 15 parts of sodium hexametaphosphate, 6 parts of fatty alcohol polyoxyethylene ether, 25 parts Acetone, 300 parts of water;

[0085] (3) Acid-base cl...

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PUM

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Abstract

The invention discloses a surface anti-corrosion treatment method of an aluminum alloy pump cover. The method is characterized by comprising steps as follows: (1) cleaning treatment, (2) oil removing and degreasing treatment, (3) acid-base cleaning treatment, (4) surface polishing treatment, (5) drying treatment, (6) preparation of a silane treating agent, (7) silanization treatment and (8) cleaning and drying treatment. In the organosilane treatment process of the aluminum alloy pump cover, the forming speed and quality of a pump cover surface silane film are effectively promoted and improved, the self-corrosion current density of the aluminum alloy pump cover is remarkably reduced, the corrosion resistance and the surface hardness are effectively improved, the service life is prolonged by 4 times or longer, and the aluminum alloy pump cover treated with the method has high market competitiveness.

Description

technical field [0001] The invention belongs to the technical field of material surface processing, and in particular relates to a surface anticorrosion treatment method for an aluminum alloy pump cover. Background technique [0002] The pump cover is one of the essential parts in the pump. In order to reduce the overall weight of the pump, most of the pump covers are made of aluminum alloy, and aluminum is an active metal. The surface of the alloy material parts must be cleaned before use. Protective treatment. The traditional method is to spray anti-corrosion paint on its surface, but the paint often has a high content of harmful substances, which is not conducive to the health of workers. Organosilane treatment technology has the characteristics of low pollution, low toxicity and good corrosion resistance, and gradually shows strong competitiveness in the field of metal surface pretreatment. With people's continuous pursuit of product performance, the corresponding proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/24C23G1/12C23G1/22C09D183/04C09D7/12
CPCC08K3/36C08K9/08C08K2201/011C09D4/00C23G1/125C23G1/22C23G1/24
Inventor 徐向远
Owner ANHUI TENGLONG PUMP VALVE MFG CO LTD
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