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Cobalt-titanium film-forming agent, aluminum material and surface coating treatment method of aluminum material

A film-forming agent, aluminum technology, applied in the direction of metal material coating process, etc., can solve problems such as the inability to meet environmental protection requirements, and achieve the effects of avoiding inconvenience, convenient use and good corrosion resistance

Inactive Publication Date: 2021-04-30
SHENZHEN CHANGHONGTAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional film generally contains chromium ions in the film treatment, which cannot meet the environmental protection needs and the process requirements of some merchants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Mix the ingredients according to the following parts by weight: based on 1000 parts by weight, 5 parts of cobalt sulfate, 2 parts of potassium fluotitanate, 2 parts of hydrofluoric acid, 2 parts of sodium tungstate and the remainder of water, stir, mix evenly, and prepare film-forming agent.

[0019] Treatment method: Prepare a cobalt-titanium film-forming agent; prepare a cobalt-titanium film-forming agent into a film solution with a mass percentage of 2%; control the pH value of the film-coating agent solution to 3; soak the aluminum material in the solution at room temperature for 2 minutes, rinse with clean water, take it out, place it under a fan to drain, and then dry it at 120 degrees.

[0020] After being treated with the above film agent solution, it was found that the corrosion resistance of the workpiece was greatly improved. The neutral salt spray test lasted for more than 48 hours. class.

Embodiment 2

[0022] Mix the ingredients according to the following parts by weight: based on 1000 parts by weight, 20 parts of cobalt sulfate, 5 parts of potassium fluotitanate, 4 parts of hydrofluoric acid, 4 parts of sodium tungstate and the rest of water, stir, mix evenly, and prepare film-forming agent.

[0023] Treatment method: prepare a cobalt-titanium film-forming agent; prepare a cobalt-titanium film-forming agent into a film solution with a mass percentage of 1.5%; control the pH value of the film-coating agent solution to 3; soak the aluminum material in the solution at room temperature for 2 minutes, rinse with clean water, take it out, place it under a fan to drain, and then dry it at 120 degrees.

[0024] After being treated with the above film agent solution, it was found that the corrosion resistance of the workpiece was greatly improved. The neutral salt spray test lasted for more than 48 hours. class.

Embodiment 3

[0026] Mix the ingredients according to the following parts by weight: based on 1000 parts by weight, 35 parts of cobalt sulfate, 5 parts of potassium fluotitanate, 6 parts of hydrofluoric acid, 6 parts of sodium tungstate and the remainder of water, stir, mix evenly, and prepare film-forming agent.

[0027] Treatment method: prepare a cobalt-titanium film-forming agent; prepare a cobalt-titanium film-forming agent into a film solution with a mass percentage of 1%; control the pH value of the film-film agent solution to 3; soak the aluminum material in the solution at room temperature for 2 minutes, rinse with clean water, take it out, place it under a fan to drain, and then dry it at 120 degrees.

[0028] After being treated with the above film agent solution, it was found that the corrosion resistance of the workpiece was greatly improved. The neutral salt spray test lasted for more than 48 hours. class.

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PUM

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Abstract

The invention relates to a cobalt-titanium film-forming agent, an aluminum material and a surface coating treatment method of the aluminum material. The cobalt-titanium film-forming agent is used for pretreating the surface of the aluminum material and comprises the following components of, in terms of 1000 parts by weight, 5-50 parts of cobalt sulfate, 2-20 parts of potassium fluotitanate, 2-10 parts of hydrofluoric acid, 2-10 parts of sodium tungstate and the balance water. A film layer formed by the cobalt-titanium film-forming agent is good in corrosion resistance and strong in adhesive force, and is particularly suitable for being used as a coating treatment bottom layer; when the film-forming agent is applied to aluminum material treatment, the film-forming agent can be used in a soaking and spraying mode, and water washing is not needed, so that water is saved, inconvenience caused by using water is avoided, and the film-forming agent is thus very convenient to use; and the film-forming agent is free of chromium ions and other heavy metal which damage the environment, and is of a green, energy-saving and environment-friendly product.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a cobalt-titanium film-forming agent, an aluminum material and a surface film treatment method thereof. Background technique [0002] In order to improve the surface performance or appearance of the product, the surface treatment technology of the workpiece is usually used. For example, the surface treatment process of aluminum, iron and their alloys has penetrated into all walks of life. Moreover, most of the work requires pretreatment before surface treatment, for example, cleaning, decontamination and degreasing, and aluminum for some purposes also needs to be treated with a film. [0003] Film treatment generally uses a film agent to pretreat the aluminum to form a film on the surface of the aluminum for subsequent surface treatment and increase the bonding force and anti-corrosion of the subsequent film. The traditional film generally contains chromium ions...

Claims

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Application Information

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IPC IPC(8): C23C22/44C23C22/73C23C22/76
CPCC23C22/44C23C22/73C23C22/76
Inventor 方招娣
Owner SHENZHEN CHANGHONGTAI TECH CO LTD
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