What Is The Difference Between Shot Blasting And Sand Blasting

Both shot blasting and sand blasting can clean and decontaminate the workpiece. The purpose is to prepare for the next sequence, that is, to ensure the roughness requirements of the next process, and some in order to ensure the consistency of the surface. The strengthening effect is not obvious. Generally, shot peening is small steel ball, and sand blasting is quartz sand. According to different requirements, divide the number of heads.
(1) The main functions of sand blasting are surface rust removal, scale removal, etc., such as heat-treated parts, and the function and function of shot blasting are more: not only rust removal, surface scale removal, but also surface roughness improvement, removal Machining burrs of parts, eliminate internal stress of parts, reduce deformation of parts after heat treatment, improve wear resistance and compression capacity of parts surface.
(2) There are many techniques for shot peening, such as: castings, forgings, parts surface after machining, parts surface after heat treatment, etc.
(3) Sand blasting is mainly manual operation, while shot blasting automation and semi-automation are much more.
(4) Steel shots and iron shots used for shot blasting are not actually shots in the true sense. It is precisely a small steel wire or a small steel rod. It only looks like a shot after a period of use. The sand is, to put it bluntly, just like river sand. It is the same as the one used for construction. It is just screened for sand blasting. It contains less mud and has a smaller particle size. Of course, some industries are also different, for example, the shot blasting in the marine industry uses real steel shots, and the sand blasting uses metal ores.
(5) Pills are generally spherical particles with no edges. Such as steel wire cutting shot; sand refers to angular sand grains, such as brown steel jade, white steel jade, river sand, etc.
(6) The spray uses compressed air as the power to spray the sand or pellets onto the surface of the material to achieve removal and a certain roughness. Throwing is a method of centrifugal force generated when the pellets are rotated at high speed, impacting the surface of the material to achieve clearance and a certain roughness.