Sand blasting is carried out by compressed air To form a high-speed jet beam to spray materials (copper ore Quartz sand 、 Emery , iron sand, Hainan sand) to the surface of the workpiece to be treated at high speed, which changes the appearance or shape of the external surface of the workpiece surface Abrasive materials The impact and cutting action on the surface of the workpiece can make the surface of the workpiece obtain a certain degree of cleanliness and different roughness, improve the mechanical properties of the surface of the workpiece, thus improving the ease and fatigue of the workpiece, increasing the adhesion between it and the coating, extending the durability of the coating, and also conducive to coating Leveling and decoration. Technical consultation:***
Application range of sand blasting abrasive:
（1） Sand blasting before workpiece coating and workpiece bonding can remove all dirt on the surface of workpiece, such as rust scale, and establish a very important basic pattern on the surface of workpiece (commonly referred to as rough surface). Moreover, it can exchange abrasives of different particle sizes, such as flyaway Abrasive abrasive tool The abrasives of the coating can reach different degrees of roughness, greatly improving the bonding force between the workpiece and the coating and plating materials. Or make the bonding parts more firm and better quality. (II) casting Rough surface of parts heat treatment The cleaning, polishing and sandblasting of the post workpiece can clean all the dirt (such as oxide skin, oil stain and other residues) on the surface of the casting and forging, and the workpiece after heat treatment, and polish the surface of the workpiece to improve the smoothness of the workpiece, so that the workpiece can expose a uniform metal natural color, and make the surface of the workpiece more beautiful and good-looking. （3） Burr cleaning and surface beautification sandblasting of machined parts can clean the tiny burrs on the surface of the workpiece, make the surface of the workpiece more flat, eliminate the harm of burrs, and improve the grade of the workpiece. In addition, sandblasting can make a small round corner at the junction of the workpiece surface, making the workpiece more beautiful and accurate.
（4） Improve the mechanical properties of parts After sandblasting, the mechanical parts can produce uniform and fine concave convex surfaces on the surface of the parts, so that the lubricating oil can be stored, thus improving the lubricating conditions, reducing noise and improving the service life of the machinery.
（5） Polishing function For some special purpose workpieces, sandblasting can achieve different reflections or matt at will. For example, polishing of stainless steel workpieces and plastics, polishing of jade, matting of wooden furniture surface, Frosted glass The pattern of the surface, and the texturing of the cloth surface. Contact number***
