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 m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example one

[0016] The surface anticorrosive treatment agent for alloy castings is prepared according to a method known in the art, and the following components are all calculated 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, at room temperature, first add oxalic acid and soluble aluminum salt sequentially to the mixture of isopropanol and distilled water In the mixed solution, stir evenly, 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 surface of the casting. After coating, the anti-corrosion and anti-rust properties of the casting are increased by 2 times, and the coating adhesion rea...

Example Embodiment

[0020] Example two

[0021] Prepare alloy casting surface anticorrosion treatment agent according to the following components (all 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 sequentially to the mixed solution of isopropanol and distilled water, stir evenly, and then add the aniline methyl triethoxy silane coupling agent and the corrosion inhibitor to the above solution.

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

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

Example Embodiment

[0025] Example three

[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 uniformly, and then add hexamethylenediaminomethyltriethoxysilane coupling agent and corrosion inhibitor to the above solution.

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

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

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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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