How to remove rust from sanitary valves?
Aug 05, 2022| Why do sanitary valves rust in use? So how do you resolve this situation? The following sanitary valve manufacturers will summarize several rust removal methods for sanitary valves.
1. Tool rust removal
Mainly use tools such as wire brushes to grind the surface of steel, which can remove loose or raised 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.
Ideal, deep pickling of anchor pattern that cannot meet the requirements of anti-corrosion construction
2. Pickling and rust removal
Generally, two methods of chemical and electrolysis are used for pickling treatment. Pipeline anti-corrosion only adopts chemical pickling, which can remove oxide scale, rust, and old coating. Sometimes it can be used as reprocessing after sandblasting and rust removal. Although chemical cleaning can make the surface achieve a certain degree of cleanliness and roughness, its anchorage
The grains are shallow, and it is easy to cause pollution to the environment.
3. Spray (throwing) rust removal
Spraying (throwing) rust removal is to drive the spraying (throwing) blades to rotate at high speed through a high-power motor, so that abrasives such as steel sand, steel shot, iron wire segments, minerals, etc. are sprayed (throwing) on the surface of the steel pipe under the action of centrifugal force. , not only can completely remove rust, oxides and dirt, but also the steel pipe is in
Under the action of the abrasive impact and friction force, the required uniform roughness can also be achieved. After spraying (throwing) rust removal, it can not only expand the physical adsorption on the surface of the pipe, but also enhance the mechanical adhesion between the anti-corrosion layer and the surface of the pipe. Therefore, spraying (throwing) rust removal is a pipeline
The ideal way to remove rust from corrosion. Generally speaking, shot blasting (sand) derusting is mainly used for inner surface treatment of pipes, and shot blasting (sand) derusting is mainly used for outer surface treatment of pipes. Several problems should be paid attention to when using spray (throwing) rust removal.
The above are several rust removal methods for sanitary valves, I hope to help everyone.