How to improve the quality of steel shot after polishing?

　　We all know that there are usually three processes for polishing steel shots: coarse grinding, medium grinding and fine grinding. Each handling process needs to use finer abrasives, and properly reduce the rotation speed of the grinding wheel, so as to obtain a more precise grinding effect than the previous process.

　　Generally, the specific steel shot polishing steps depend on the roughness of the surface of the workpiece itself. Except for the severe scratch marks on the aluminum material, the machined parts can be polished with l60#, and then the steel shot can be polished. If necessary, 120# rough grinding can be added before that, and then oiled and polished. It is not suitable or recommended to use fine sand abrasives for one-time grinding, otherwise it will not only reduce the work efficiency, but also affect the service life of the polishing wheel.

　　In order to improve the polishing quality of the steel shot, it is necessary to grind away the rough processing marks left by the mechanical processing during the rough grinding, and it is necessary to wear out the marks left during the rough grinding during the medium grinding, so that the surface finish of the workpiece is gradually improved. Improve and progress, otherwise it will not only waste labor and materials, but also the quality will not be guaranteed.

　　In addition, in order to prevent the repetition of steel shot polishing track marks, and improve the steel shot polishing quality and polishing efficiency, the direction of the grinding wheel must intersect with the previous grinding track in each polishing.

　　By polishing the steel shot, various macroscopic defects such as burrs, rust, scratches, welding bumps, weld seams, sand holes, and scale can be removed to improve the flatness and electroplating quality of the steel shot.