Process performance introduction of steel plate pretreatment line

Process performance introduction of steel pretreatment line

The role of steel plate pretreatment In order to give full play to the protection and decoration of the coating on the substrate, in addition to the quality of the coating itself, the surface treatment quality and construction level of the substrate directly affect the quality of the coating project. Practical experience shows that most of the coating defects come from poor surface treatment, and any coating cannot exert its performance on poorly treated surfaces. It is a waste of time and money to paint on scales, rust, and oil stains. High-grade surface treatment quality will extend the service life of the paint.

The surface treatment of the steel plate before painting is divided into two stages. After the steel plate enters the factory, the raw materials of the steel are processed before processing to remove the scale and rust on the surface. After reaching the rust removal standard, the temporary protective workshop primer is applied. To ensure that the steel will not continue to corrode during the process of manufacturing components, this stage of steel plate treatment is called surface pretreatment of steel. Its advantages are convenient construction, ensuring coating quality, saving manpower and financial resources, and shortening the later coating. Construction period. Another stage of treatment is when the steel is processed into a work piece and then folded into a whole, the surface treatment of the steel made by painting is called "secondary rust removal", but this method is generally not adopted.

 Steel plate shot blasting pretreatment line process In the domestic shipbuilding, container, and large machinery industries, the shot blasting method on the steel plate pretreatment line equipment is generally used for abrasive treatment, jet abrasive treatment and pickling treatment. Among them, to obtain high-efficiency and high-quality automatic flow operations, there is currently only a shot blasting method. Shot blasting is to use the centrifugal force generated by the impeller of the shot blaster to rotate at high speed to shoot the projectile material (steel shot, steel wire section, angular steel sand, etc.) at a very high speed toward the surface of the steel to be processed, resulting in shock and Grinding action to remove scale and rust on the steel surface, let the steel surface reveal the true color of the metal and show roughness, in order to facilitate the adhesion of the paint. There are two types of blasting pretreatment lines in general: one is the steel plate pretreatment line, and the other is the steel pretreatment line. The working principles of the two are the same. The current shipyards, containers, and large port machinery plants use one. There are two methods used in general steel structure factories. The purpose of the two methods is the same to ensure the coating quality.