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Alkaline washing solution, phosphating solution and metal surface treatment method

A technology of cleaning liquid and phosphating liquid, applied in the direction of metal material coating process, etc., can solve the problems of environmental treatment burden of phosphate, short service life of phosphating liquid, and high phosphating temperature, so as to reduce phosphating liquid sediment and cost. Low, good corrosion resistance effect

Active Publication Date: 2017-11-14
威海赤那思电子材料有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

At present, the common problems of domestic phosphating technology are: high phosphating temperature, short service life of phosphating solution, difficult washing and water pollution, which not only bring burden to environmental governance but also consume a lot of water, phosphate and other resources

Method used

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  • Alkaline washing solution, phosphating solution and metal surface treatment method

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Embodiment Construction

[0018] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] Such as figure 1 Shown, a kind of metal surface treatment method of the present invention mainly comprises the following steps:

[0020] Step 1) Degreasing: soak the metal workpiece to be treated in an acetone solution, use an ultrasonic cleaner to clean it for 10-15 minutes, and fully clean the oil stain;

[0021] Step 2) Alkali cleaning: immerse the workpiece to be treated in an alkaline cleaning solution or use an alkaline cleaning solution for spraying;

[0022] Step 3) pickling: the above-mentioned metal workpiece after alkali washing is carried out pickling, the pickling liquid used is the H2SO4 of 150mL / L, the HF of 50mL / L and the mixed solution of the triethanolamine of 30mL / L, control temperature at 25 ℃, the pickling time is about 2 min; the pickling solution used is a mixed solution of 150mL / L H2SO4, 50mL / L HF and 3...

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Abstract

The invention discloses an alkaline washing solution, a phosphating solution and a metal surface treatment method. The metal surface treatment method comprises the steps of deoiling, washing via alkaline, washing via acid, washing twice via water and phosphating. The adopted environment-friendly alkaline washing solution has the technical effects of energy economization and environment protection and also has excellent washing effects on ferrous metals and non-ferrous metals; the adopted phosphating solution has the advantages of rapid film formation, strong binding force of coating films, high corrosion resistance, capability of operating by brushing or spraying, simple operation and low cost; according to the prepared phosphating solution, the sediment of the phosphating solution is reduced; the quality of phosphating films is ensured; film layers are uniform, fine and smooth; therefore, the metal surface treatment method is capable of more environmentally friendly and more efficiently achieving metal surface treatment before coating and has positive influence on the coating process and the coating quality.

Description

technical field [0001] The invention relates to a metal surface treatment method before painting, which belongs to the technical field of metal smelting and processing. Background technique [0002] Pre-painting treatment refers to the preparation of the surface of the object before painting, which is the basis of the entire painting process. The quality of the treatment directly affects the quality of the entire painting, so it must be given important attention. During the processing and storage of metal workpieces, especially in the process of machining, they are easily polluted by oil, and the surface is prone to produce adhesions. For example, some workpieces need to be coated with anti-rust oil or anti-rust grease in order to prevent rust during storage. be protected. The existence of oil stains affects the wetting and bonding force of the paint on the metal substrate, so it is necessary to remove the metal material before painting, and perform a proper surface chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/78C23C22/44C23G1/18
CPCC23C22/44C23C22/78C23G1/02C23G1/18
Inventor 董晓娜
Owner 威海赤那思电子材料有限公司
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