What are the methods of steel pipe surface treatment

Long-term exposure to steel and other metal materials in the atmosphere will inevitably corrode and form loose rust, which will cause serious losses to modern industries.

At present, pipelines play an important role in various industries, so the surface treatment of steel pipes is also a factor that determines the service life of pipelines. It is the premise of whether the anti-corrosion layer and steel pipes can be tightly combined. After verification by research institutions, the life of the anti-corrosion layer depends on the type of coating, the quality of the coating, and the construction environment. In addition to the above factors, the steel pipe surface treatment accounts for about 50% of the life of the anti-corrosion layer. From this, we can know the importance of steel pipe surface treatment, and we must continuously improve the surface treatment method. The following common steel pipe rust removal methods in the market, how to remove rust on steel pipes? What is the best method for steel pipe surface treatment?

1. Cleaning. Cleaning is a method of using a chemical agent to remove dirt on the surface of an object. It uses the surface pollutants or coatings of the cleaning agent to chemically transform, dissolve, and peel off to achieve the effects of degreasing, rust removal, and decontamination. The disadvantage is that it can not really remove the rust, scale, etc. on the surface of the steel, so it can only be used as an auxiliary method in the process of anti-corrosion and rust removal.

2. Use tools to remove rust. Tool de-rusting mainly uses wire brushes to polish the surface of steel pipes and steel materials, which can remove loose or raised oxide scales, welding slag, rust, and other surface treatments. The rust removal of hand tools can reach the rust removal grade Sa2, and the rust removal of power tools can reach the rust removal grade Sa3. If the surface attachment of the steel is firm, the de-rusting effect of the tool cannot achieve the desired effect, and the anchor pattern depth required for anti-corrosion construction cannot be achieved.

Three, pickling. A long time ago, the method of rust removal was widely used, usually using chemical and electrolytic methods for pickling treatment. Pickling can be used to remove scale, rust, and old coatings. Sometimes it can be used for sandblasting to remove rust. The secondary treatment after rusting and chemical pickling can make the surface reach a certain degree of cleanliness and roughness, but the anchor lines are shallow and cause environmental pollution, which exceeds the national environmental protection index.

Fourth, mechanical equipment – steel pipe shot blasting machine de-rusting. The surface treatment method of steel pipe shot blasting machine for rust removal is to throw the shot material (steel sand or sand) onto the surface of the workpiece at a high speed and a certain angle, let the shot material hit the surface of the steel pipe, and then make the shot material inside the machine Repeat cycle system. This method can not only completely solve the rust, oxide, and pollution of the steel pipe, but also achieve the required uniform roughness under the violent impact and friction of the steel pipe abrasive. The modified surface treatment method realizes the advantages of low cost, high efficiency, economic and environmental protection, mechanization, and a high degree of intelligence. The steel pipe shot blasting machine has a wide range of applications. It can clean the surface attachments and oxide layers of the workpiece, so that the workpiece can show a new look and meet the standards for the use of the workpiece. At the same time, it can also make the surface of the workpiece smoother, which is beneficial for later Spraying and other work. The steel pipe shot blasting machine can clean the inner and outer walls of the steel pipe, and the work efficiency is also very high.

The use of the steel pipe shot blasting machine makes the surface treatment of the steel pipe more convenient, the cleaning effect is better, and it can also save costs and reduce manpower input. This method has also been applied in more and more fields. The current design of steel pipe shot blasting machines is also more environmentally friendly. For example, there is dust removal equipment, which can collect the dust generated during work without causing pollution. At the same time, the steel pipe shot blasting machine can also be recycled, which can reduce material consumption and reduce the cost of the enterprise. Using the steel pipe shot blasting machine works faster, can save a lot of time, and process a large number of workpieces at the same time, improving the efficiency of the enterprise.

Post time: May-22-2023