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Method For Removing Rust On Spiral Steel Pipe Surface

Jan. 21, 2019

After the spiral steel pipe is placed for a long time, the surface will produce rust. Do you know how to clean the rust? Pipe Fitting Wholesaler will give some suggestions.

1.Cleaning

The solvent and emulsion are used to clean the Large Diameter Spiral Steel Pipe surface to remove oil, grease, dust, smoothing agent and similar organic matter, but it can not remove the rust, scale, flux, etc. of the steel surface, so it is only used as an auxiliary tactic in the anti-corrosion production.

2. Spray derusting

Jet rust removal is a high-speed motor driven spray (throwing) spray blade high-speed torsion, so that steel sand, steel pellets, wire segments, minerals and other abrasives under the centrifugal force effect on the surface of the steel pipe spray (throwing) treatment, not only thoroughly The rust, oxides and dirt are eliminated, and the steel pipe can reach the required average roughness under the effect of abrasive impact and friction.

After spraying and removing rust, not only can the physical adsorption effect of the outer surface of the tube be expanded, but also the mechanical adhesion effect between the anti-corrosion layer and the outer surface of the tube can be enhanced. Therefore, spray rust removal is an ideal method for rust removal of pipelines. In general, shot blasting descaling is mainly used for the internal and external treatment of pipes, and shot blasting descaling is mainly used for surface treatment of pipes.

3. Tool rust removal

Firstly, the steel surface is polished with tools such as wire brushes to remove loose or raised scale, rust, welding slag, and the like. The rust removal of the hand tool can reach the Sa2 level, and the rust removal of the power tool can reach the Sa3 level. If the steel surface is attached with a strong iron oxide scale, the rust removal result of the tool is not ideal, and the anchor depth required for the anti-corrosion construction cannot be achieved.

4. Pickling

Ordinary use of chemical and electrolytic methods for pickling disposal, pipeline anti-corrosion only chemical pickling, can remove oxide scale, rust, old coating, and sometimes can be used as sandblasting after rust removal. Chemical cleaning can certainly bring the appearance to the inevitable cleanliness and roughness, but its anchor pattern is shallow and it is easy to cause pollution.

Large Diameter Spiral Steel Pipe

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