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Corrosion-preventing treating agent for surface of alloy casting

An anti-corrosion treatment and alloy casting technology, applied in the field of alloy casting surface anti-corrosion treatment agent, can solve problems such as difficulty in meeting requirements, environmental hazards, inability to clean and remove aluminum alloy die-casting coatings, etc. good antiseptic effect

Inactive Publication Date: 2016-04-06
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the surface treatment agents used in the existing surface treatment methods are more harmful to the environment, such as containing cerium Se, chromium Cr, copper Cu, etc., and there are few surface cleaning agents specially for metal die castings on the market, and most of them only It can simply remove oil or rust, but cannot clean and remove aluminum alloy die-casting coatings
Traditional alloy surface cleaning agents have been difficult to meet the current requirements for surface cleaning of aluminum alloy die castings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare the surface anticorrosion treatment agent for alloy castings by methods known in the art, and the following components are all in parts by weight:

[0017] 100 parts of oxalic acid, 20 parts of silane coupling agent, 20 parts of isopropanol, 10 parts of aluminum sulfate, 6 parts of corrosion inhibitor, 80 parts of distilled water. Stir evenly in the mixed solution, and then add the γ-ureidopropyltriethoxysilane coupling agent and benzotriazole into the above solution.

[0018] Preferably, the corrosion inhibitor is a mixture of benzotriazole and octadecyltrichlorosilane in a mass ratio of 1:0.1.

[0019] Spray the above treatment agent on the casting surface. After coating, the anti-corrosion performance and anti-rust performance of the casting are improved by 2 times, and the coating adhesion reaches the first grade.

Embodiment 2

[0021] Prepare alloy casting surface anti-corrosion treatment agent according to the following components (both in parts by weight):

[0022] 100 parts of oxalic acid, 20 parts of silane coupling agent, 25 parts of isopropanol, 15 parts of aluminum chloride, 8 parts of corrosion inhibitor, 100 parts of distilled water. At room temperature, first add oxalic acid and soluble aluminum salt to the mixed solution of isopropanol and distilled water in sequence, stir evenly, and then add anilinomethyltriethoxysilane coupling agent and corrosion inhibitor to the above solution.

[0023] The corrosion inhibitor mentioned above is a mixture of benzotriazole and octadecyltrichlorosilane with a mass ratio of 1:0.2.

[0024] Spray the above treatment agent on the casting surface. After coating, the anti-corrosion performance and anti-rust performance of the casting are increased by 3 times, and the coating adhesion reaches the first grade.

Embodiment 3

[0026] 100 parts of oxalic acid, 25 parts of silane coupling agent, 30 parts of isopropanol, 12 parts of aluminum chloride, 6 parts of corrosion inhibitor, 120 parts of distilled water. At room temperature, first add oxalic acid and soluble aluminum salt to the mixed solution of isopropanol and distilled water in sequence, stir evenly, and then add hexamethylenediaminomethyltriethoxysilane coupling agent and corrosion inhibitor to the above solution.

[0027] The corrosion inhibitor mentioned above is a mixture of benzotriazole and octadecyltrichlorosilane with a mass ratio of 1:0.3.

[0028] Spray the above treatment agent on the casting surface. The anti-corrosion performance and anti-rust performance of the casting are increased by 3 times, and the coating adhesion reaches the first grade.

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PUM

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Abstract

The invention discloses a corrosion-preventing treating agent for the surface of an alloy casting. The corrosion-preventing treating agent comprises, by weight, 100 parts of oxalic acid, 20-25 parts of silane coupling agent, 20-30 parts of isopropanol, 10-15 parts of soluble aluminum salt, 6-8 parts of corrosion inhibitor and 80-120 parts of distilled water. At the room temperature, the oxalic acid and the soluble aluminum salt are sequentially added into a mixed solution of the isopropanol and the distilled water to be evenly stirred, and then the silane coupling agent and the corrosion inhibitor are added to the solution. According to the corrosion-preventing treating agent, a very good corrosion-prevention and rust-prevention protection effect can be better achieved on the metal pressure casting, cleaning of the surface of the casting can be strengthened through the adding of the oxalic acid and the soluble aluminum salt, the dispersing effect of the treating agent can be enhanced under the synergistic effect of the silane coupling agent and other components, the binding force of a corrosion-prevention film layer is improved, and coating adhesive force is improved.

Description

technical field [0001] The invention relates to an alloy casting surface anticorrosion treatment agent. Background technique [0002] The main purpose of metal surface treatment is to improve the corrosion resistance of metal materials. Using simple and safe methods for metal surface treatment has always been the goal pursued by people. However, most of the surface treatment agents used in the existing surface treatment methods are more harmful to the environment, such as containing cerium Se, chromium Cr, copper Cu, etc., and there are few surface cleaning agents specially for metal die castings on the market, and most of them only It can simply remove oil or rust, but cannot clean and remove aluminum alloy die-casting coatings. Traditional alloy surface cleaning agents have been difficult to meet the current requirements for cleaning the surface of aluminum alloy die castings. Contents of the invention [0003] The technical problem to be solved by the invention is to...

Claims

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Application Information

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IPC IPC(8): C23G1/04C23G1/12
CPCC23G1/063C23G1/125
Inventor 浦巧生
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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