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Surface passivation treatment method of steel plate

A passivation treatment, steel plate technology, applied in the direction of metal material coating process, etc., can solve the problem that the effect of passivation is not as good as that of chromate passivation solution, and achieve good use value, extended service life and good corrosion resistance Effect

Inactive Publication Date: 2017-12-12
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 effect of passivation treatment is closely related to the use of passivation solution and the process of passivation treatment. There are many types of passivation solutions, such as chromate passivation solution, phosphate passivation solution, rare earth salt passivation solution, etc. Among them, chromate is eliminated because it is harmful to the environment. Although the overall performance of the rare earth salt passivation solution is good, the passivation effect is not as good as that of the chromate passivation solution. Therefore, it is necessary to passivate the existing rare earth salt passivation treatment. process improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for surface passivation treatment of a steel plate, comprising the steps of:

[0028] (1) Cleaning and degreasing treatment:

[0029] Immerse the steel plate to be treated in acetone for 15 minutes, remove the surface grease and take it out for later use;

[0030] (2) Alkali washing treatment:

[0031] Immerse the steel plate treated in step (1) in alkaline solution for alkaline washing for 25 seconds, then take it out for later use;

[0032] (3) Rinse with clean water:

[0033] Rinse the steel plate treated in step (2) with clean water, and then dry it for later use;

[0034] (4) Rare earth passivation treatment:

[0035] Immerse the steel plate treated in step (3) into the rare earth passivation solution for a passivation treatment. During this period, heat and keep the temperature of the rare earth passivation solution at 46°C, and take it out after 55 seconds of passivation treatment;

[0036] (5) Silane passivation treatment:

[0037] Immerse the ste...

Embodiment 2

[0046] A method for surface passivation treatment of a steel plate, comprising the steps of:

[0047] (1) Cleaning and degreasing treatment:

[0048] Immerse the steel plate to be treated in acetone for 18 minutes, remove the surface grease and take it out for later use;

[0049] (2) Alkali washing treatment:

[0050] Immerse the steel plate treated in step (1) in alkaline solution for alkaline cleaning for 27 seconds, then take it out for use;

[0051] (3) Rinse with clean water:

[0052] Rinse the steel plate treated in step (2) with clean water, and then dry it for later use;

[0053] (4) Rare earth passivation treatment:

[0054] Immerse the steel plate treated in step (3) into the rare earth passivation solution for a passivation treatment. During this period, heat and keep the temperature of the rare earth passivation solution at 49°C, and take it out after 58 seconds of passivation treatment;

[0055] (5) Silane passivation treatment:

[0056] Immerse the steel pl...

Embodiment 3

[0065] A method for surface passivation treatment of a steel plate, comprising the steps of:

[0066] (1) Cleaning and degreasing treatment:

[0067] Immerse the steel plate to be treated in acetone for 20 minutes, remove the surface grease and take it out for later use;

[0068] (2) Alkali washing treatment:

[0069] Immerse the steel plate treated in step (1) in alkaline solution for alkaline cleaning for 30 seconds, then take it out for later use;

[0070] (3) Rinse with clean water:

[0071] Rinse the steel plate treated in step (2) with clean water, and then dry it for later use;

[0072] (4) Rare earth passivation treatment:

[0073] Immerse the steel plate treated in step (3) into the rare earth passivation solution for a passivation treatment. During this period, heat and keep the temperature of the rare earth passivation solution at 50°C, and take it out for use after 60s of passivation treatment;

[0074] (5) Silane passivation treatment:

[0075] Immerse the s...

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Abstract

The invention discloses a surface passivation treatment method of a steel plate. The surface passivation treatment method comprises the following steps of (1) cleaning and oil removal treatment, (2) alkaline cleaning treatment, (3) clean water washing treatment, (4) rare earth passivation treatment, (5) silane passivation treatment, and (6) drying treatment. According to the surface passivation treatment method of the steel plate, a traditional surface passivation treatment method is reasonably optimized and improved, the passivation treatment effect is effectively improved through a technology comprising two times of passivation treatment, finally, the treated steel plate has very good corrosion resistance, the service life of the steel plate can be prolonged by 25% or so, and the steel plate has very good use value.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a surface passivation treatment method of a steel plate. 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 steel plates is inevitable in the processing and manufacturing of construction machinery, but steel plates are prone to corrosion and deterioration under natural conditions, so it is necessary to improve the anti-corrosion performance of steel plates in processing, storage and use of parts. At present, there are many studies on steel plate anticorrosion process, and the corresp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/73
CPCC23C22/73C23C2222/20
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