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Method for treating the surface of sanitary stainless steel pipe

Method for treating the surface of sanitary stainless steel pipe

(Summary description)The research institute verified that the life of the anti-corrosion layer depends on the type of coating, coating quality and construction environment. The surface treatment of the sanitary seamless pipe has an impact on the life of the anti-corrosion layer about 50%. Therefore, it should be strictly in accordance with The anti-corrosion coating specification has continuously explored and summarized the surface requirements of sanitary stainless steel pipes, and continuously improved the surface treatment methods of sanitary stainless steel pipes.

Method for treating the surface of sanitary stainless steel pipe

(Summary description)The research institute verified that the life of the anti-corrosion layer depends on the type of coating, coating quality and construction environment. The surface treatment of the sanitary seamless pipe has an impact on the life of the anti-corrosion layer about 50%. Therefore, it should be strictly in accordance with The anti-corrosion coating specification has continuously explored and summarized the surface requirements of sanitary stainless steel pipes, and continuously improved the surface treatment methods of sanitary stainless steel pipes.

Information

The research institute verified that the life of the anti-corrosion layer depends on the type of coating, coating quality and construction environment. The surface treatment of the sanitary seamless pipe has an impact on the life of the anti-corrosion layer about 50%. Therefore, it should be strictly in accordance with The requirements of anticorrosion coating specifications on the surface of sanitary stainless steel pipes have been continuously explored and summarized, and the surface treatment methods of sanitary stainless steel pipes have been continuously improved.
1. Cleaning
To
Use solvents and emulsions to clean the steel surface to remove sanitary stainless steel pipe oil, grease, dust, lubricants and the like, but it cannot remove the rust, oxide scale, welding flux, etc. on the surface of stainless steel sanitary pipes, so it is in anti-corrosion production The medium is only used as an aid. To
2. Tools to remove rust
To
Mainly use tools such as wire brushes to polish the surface of sanitary stainless steel pipes, which can remove loose or warped oxide scale, rust, welding slag, etc. The rust removal of hand tools can reach Sa2 level, and the rust removal of power tools can reach Sa3 level. If the surface of sanitary stainless steel pipe is attached with firm oxide scale, the tool rust removal effect is not ideal, and the anchor pattern required for anti-corrosion construction cannot be achieved.
3. Pickling
To
Generally, two methods of chemical and electrolysis are used for pickling treatment. Pipeline anticorrosion only uses chemical pickling, which can remove oxide scale, rust, and old coatings. Sometimes it can be used as a reprocessing after sandblasting and rust removal. Although chemical cleaning can make the surface of sanitary stainless steel pipe reach a certain degree of cleanliness and roughness, its anchor pattern is shallow and it is easy to pollute the environment.
4. Spray (throw) to remove rust
To
Spraying (throwing) rust removal is to drive the spraying (throwing) blades to rotate at a high speed through a high-power motor, so that the steel grit, steel shot, iron wire section, minerals and other abrasives are sprayed (throwed) on the surface of the steel pipe under the action of centrifugal force. , Not only can remove rust, oxide and dirt, but also the sanitary stainless steel pipe can achieve the required uniform roughness under the action of the violent impact and friction force of the abrasive.

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