Abrasive treatment by shot blasting machine on steel plate pretreatment line equipment in general
In the domestic shipbuilding, container, large machinery industry, the general use of steel plate pretreatment line equipment on the shot blasting machine shot blasting method for abrasive treatment, shot blasting abrasive treatment and pickling treatment in three ways. Which to get high efficiency and high quality automatic flow operation, there is still only shot blasting treatment method.
Shot blasting is the use of road blasting machine impeller in the high-speed rotation of the centrifugal force generated by the projectile shot material (steel shot, steel wire segments, angular steel sand, etc.) at a very high speed shot to the surface of the steel to be treated, the impact and grinding effect, remove the steel surface oxidation and rust, so that the surface of the steel to reveal the original color of the metal and present a specific roughness, in order to facilitate the adhesion of coatings.
After the shot blasting steel is sent to the cleaning room, the cleaning roller brush will be cleaned of the residual pellets on the surface, and then the wind tail blowing, the surface of the workpiece is cleaned and clean, with the clean standard of painting.
The cleaned workpiece is sent to the spray painting room, and the spray painting room is set up with two air jets to spray paint the workpiece, and the paint spraying process is adjusted to control the thickness of the paint film by adjusting the speed of the roller runway, the size of the nozzle and choosing the working mode.
After the surface is painted, the steel is sent to the drying room for drying, which is heated by combustion or electricity. After drying, the workpiece enters the conveying roller conveyor at the discharge end to complete the pre-treatment of steel.
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, a 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 quality of coating, saving manpower and financial resources, and shortening the post-painting construction cycle.
When the wear degree of the main parts has reached the limit of normal use, continue to use, wear will rise sharply, resulting in mechanical equipment precision, technical performance, production efficiency dropped significantly, the failure rate rose sharply.
In the use of machinery and equipment, the limit of normal use should be found in time, timely preventive repair and replacement of worn parts to prevent failure.