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Normal-temperature green efficient composite metal surface treating agent

A metal surface treatment and composite technology, which is applied in the field of compound metal surface treatment agent preparation, can solve the problems of complex cleaning agent formulation, large size and difficult to degrade, and high cost of use, and achieves a simple and convenient surface treatment process, as well as ensuring smoothness and smoothness. Effect of finish, low processing cost

Active Publication Date: 2015-04-15
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based cleaning agent commonly used at present not only has poor resistance to hard water, poor cleaning effect, and limited use conditions; moreover, the formula of the cleaning agent is complicated, the use cost is high, and the cleaning components are highly toxic and difficult to degrade

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] High-efficiency composite surface treatment agent: the surfactant components are fatty alcohol polyoxyethylene ether 18g / L, alkyl alcohol polyoxyethylene ether 6g / L, sodium dodecylbenzenesulfonate 6g / L, mixed acid 15g / L L, additives are sodium silicate 8g / L, sodium carboxymethylcellulose 3g / L. First add the surfactant and auxiliary components into a certain amount of water to dissolve, then add the mixed acid and stir evenly.

[0016] The high-efficiency composite surface treatment agent is used for the treatment of a certain mechanical heat exchange equipment. The metal material of the heat exchange equipment is 3A21 aluminum alloy. Put the heat exchange equipment into the prepared surface treatment solution at room temperature for immersion treatment for 20-30 minutes, and finally take it out to calculate the oil removal rate and the thickness of the aluminum oxide film.

[0017] The treatment results show that the surface of the treated heat exchange equipment is cl...

Embodiment 2

[0019] High-efficiency composite surface treatment agent: the surfactant components are fatty alcohol polyoxyethylene ether 12g / L, alkyl alcohol polyoxyethylene ether 8g / L, sodium dodecylbenzenesulfonate 6g / L, mixed acid 8g / L L, additives are sodium silicate 10g / L, sodium carboxymethylcellulose 2g / L. First add the surfactant and auxiliary components into a certain amount of water to dissolve, then add the mixed acid and stir evenly.

[0020] The high-efficiency composite surface treatment agent is used for the surface treatment of a mechanical brake pipeline, and the metal material of the brake pipeline is alloy steel. Since the inner wall of the brake pipeline is seriously polluted by heavy oil and there is a small amount of rust on the outside, first put the brake pipeline into the prepared surface treatment solution and soak it at room temperature for 10 minutes, and then use a high-pressure water gun to clean the prepared surface. Rinse the inner wall with the treatment l...

Embodiment 3

[0023] High-efficiency composite surface treatment agent: the surfactant components are fatty alcohol polyoxyethylene ether 10g / L, alkyl alcohol polyoxyethylene ether 6g / L, sodium dodecylbenzenesulfonate 8g / L, mixed acid 15g / L L, additives are sodium silicate 6g / L, sodium carboxymethylcellulose 4g / L. First add the surfactant and auxiliary components into a certain amount of water to dissolve, then add the mixed acid and stir evenly.

[0024] The high-efficiency composite surface treatment agent is used for cleaning a certain heat exchanger, and the metal material of the heat exchanger is copper alloy. Due to long-term storage, a small amount of patina has appeared on the surface of the heat exchanger blades, so the soaking time should be extended appropriately. Soak the copper alloy heat exchanger sheet in the prepared surface treatment solution at room temperature for 30 minutes, take out the heat exchanger sheet and rinse it with clean water.

[0025] The treatment results...

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Abstract

The invention relates to a compounding method of a water-based efficient metal surface treating agent. At present, the conventional metal surface treating agents can not remove oil stains, metal rusts, and oxide scales at the same time, most of conventional metal surface treating agent comprises phosphorus, the treating effect is bad, the environment is badly polluted, and the conventional metal surface treating agents cannot be used in hard water. Therefore, an normal-temperature composite surface treating agent, which is efficient, environment-friendly, and antiseptic and is capable of removing oil and rusts at the same time, is badly needed. LAS and AEO-7 can be compounded to generate a synergetic effect, the mixture has a good hard water resistant performance, and the mixture can be further compounded with AEO-9, OP-10, sodium silicate, sulfuric acid, phosphoric acid, sodium carboxymethyl cellulose, and water so as to obtain an efficient environment-friendly composite metal surface treating agent. The provided metal surface treating agent has excellent functions of removing oil, rust, oxide scales, preventing corrosion, and activating, and can be widely applied to surface treatments before welding, electroplating, phosphatization of metals. The provided metal surface treating agent also has the advantages of low cost, environment-friendliness, stable property, good hard water resistant property, and no generation of acid fog during the treatment course, and thus has a high application value and wide market prospect.

Description

technical field [0001] The invention relates to the preparation of a composite metal surface treatment agent, which is suitable for surface treatment of various materials such as stainless steel, copper, aluminum and alloys. Background technique [0002] In the process of production, transportation and storage, metal materials will inevitably be contaminated with a lot of oil, dust and particle pollutants, which will cause rust on the metal surface; dense aluminum oxide film. These oil stains, rust, and oxide scales will directly affect the quality of subsequent metal welding, electroplating, and phosphating processes. Therefore, the treatment effect of the surface treatment agent has a great influence on the precision machining and service life of the metal. [0003] At present, the industry has phased out the previous solvent-based cleaning agents and replaced them with water-based cleaning agents. The water-based cleaning agents commonly used at present not only have p...

Claims

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Application Information

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IPC IPC(8): C23G1/04
CPCC23G1/04
Inventor 杨文忠严伟强刘瑛尹晓爽
Owner NANJING UNIV OF TECH
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