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carbon seamless steel pipe

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carbon seamless steel pipe
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Surface cleaning method of seamless steel pipe

Date:2021-09-06View:595Tags:carbon seamless steel pipe

1. Cleaning

Use solvents and emulsions to clean the surface of steel to remove oil, grease, dust, lubricants and similar organic matter, but it cannot remove rust, oxide scale (corrosion products formed by oxidation), welding flux, etc. on the surface of steel. It is only used as an auxiliary means in anti-corrosion production.


seamless steel pipe


2. Tools to remove rust

Mainly use tools such as wire brushes to polish the steel surface, 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 steel surface is attached with a firm iron oxide scale, the tool rust removal effect is not ideal, and the anchor pattern depth required for anti-corrosion construction cannot be reached.


3. Pickling

Generally, two methods of chemical and electrolysis are used for pickling. 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 reach a certain degree of cleanliness and roughness, its anchor pattern is shallow and easily pollutes the environment.


4. Spray rust removal

Jet rust removal is to drive the jet blades to rotate at a high speed by a high-power motor, so that steel grit, steel shot, iron wire, minerals and other abrasives are sprayed on the surface of the steel pipe under the action of centrifugal force, which can not only completely remove rust, oxides and dirt. , And the steel pipe can achieve the required uniform roughness under the action of the abrasive violent impact and friction. Seamless carbon steel pipe have a hollow section and are used in large quantities as pipelines for conveying fluids, such as pipelines for conveying oil, natural gas, gas, water and certain solid materials. Compared with solid steel such as round steel, steel pipe has a lighter weight when the bending and torsion strength is the same, and it is a kind of economical cross-section steel.

  
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