Introduction to the process performance of steel pretreatment line
The role of steel pretreatment In order to give full play to the protective and decorative effect of the coating on the substrate, in addition to the quality of the coating itself, the quality of the surface treatment of the substrate and the construction level directly affect the quality of the coating project. Practical experience shows that most of the coating defects come from bad surface treatment, and any coating can not play its performance on the poorly treated surface. Painting on oxidized, rusted and oiled surfaces is a waste of both time and money, and high grade surface treatment quality will extend the life of the coating.
The surface treatment of steel plate before painting is divided into two stages After the steel plate comes into the factory, the raw material of steel is treated before processing to remove the surface oxidation and rust, and after reaching the standard of rust removal, the temporary protective workshop primer is applied to ensure that the steel will not continue to corrode in the process of processing and manufacturing the components, this stage of steel plate treatment we call the surface pretreatment of steel, the advantages of which are convenient construction, ensuring the painting The advantages are easy construction, guaranteeing the quality of coating, saving manpower and financial resources, and shortening the construction period of later coating. Another stage of treatment is the steel surface treatment to be painted when the steel is processed into the workpiece and combined into a whole, called "second rust removal", but generally do not adopt this method.
Steel plate shot pre-treatment line process In the domestic shipbuilding, container, large machinery industry, the general use of steel plate pre-treatment line equipment on the shot blasting machine shot blasting method of abrasive treatment, spray abrasive treatment and pickling treatment in three ways. Among them to obtain high-quality automatic flow of work, there is still only shot blasting treatment method. Shot blasting treatment is the use of the impeller of the blasting machine in the high-speed rotation of the centrifugal force generated by the projectile shot material (steel shot, steel wire segments, angular steel sand, etc.) to a very high speed shot to the surface of the steel to be treated, to produce a blow and grinding effect, remove the steel surface oxidation and rust, so that the steel surface to reveal the original color of the metal and present roughness, in order to facilitate the adhesion of coatings. Shot blasting pretreatment line, in general, there are two types: one is the steel pretreatment line, the other is the steel pretreatment line, the two working principle is the same, now shipyards, containers, large port plant using a method, general steel production plant with two methods, the two methods are the same purpose is to ensure the quality of painting.