Differences and advantages of sand blasting and shot blasting in Dalian

Which is a good sand blasting factory? The main differences are:

1. Shot blasting is to use the high-speed rotating impeller to throw out small steel shot or small iron shot and hit the surface of the part at high speed, so the oxide layer on the surface of the part can be removed. Sand blasting is a method that uses compressed air to blow out quartz sand at high speed to clean the surface of parts.

2. generally, shot blasting is used for regular shapes, etc., with several heads up, down, left and right together, which has high efficiency and little pollution. Sand blasting is used for complex shape, easy to remove rust by hand, low efficiency, poor site environment and uneven rust removal.

3. In the repair and shipbuilding industry, shot blasting (small steel shot) is generally used in steel plate pretreatment (rust removal before coating). Sand blasting (mineral sand used in repair and shipbuilding) is mostly used in formed ships or sections to remove the old paint and rust on the steel plate and repaint it.

4. Shot blasting is to use the motor to drive the impeller body to rotate, and by the action of centrifugal force, throw the balls (including cast shot, cut shot, stainless steel shot, etc.) with a diameter of 0.2 ~ 3.0 to the surface of the workpiece, so as to make the workpiece beautiful, or change the welding tensile stress of the workpiece to compressive stress, so as to improve the service life of the workpiece. Sand blasting is in the steel structure. The application of high-strength bolts for connection is a relatively advanced method. Because the high-strength connection uses the friction between the joint surfaces to transfer force, the quality requirements of the joint surface are very high. At this time, the joint surface must be treated by sand blasting.

Shot blasting - it is to use the motor to drive the impeller body to rotate, and by the action of centrifugal force, throw the steel shot and steel sand (including alloy shot, steel wire cutting shot, stainless steel shot, steel shot and steel sand) with a diameter of 0.2 ~ 3.0 to the surface of the workpiece, so as to make the surface of the workpiece reach a certain roughness, make the workpiece beautiful, or change the welding tensile stress of the workpiece to compressive stress, so as to improve the service life of the workpiece

It is almost used in most fields of machinery, such as ship repair, auto parts, aircraft parts, gun and tank surface, bridge, steel structure, glass, steel plate, pipeline and so on.

Sand blasting (shot) - use compressed air as power to spray steel sand with a diameter of 40 ~ 120 mesh or steel shot with a diameter of about 0.1 ~ 2.0 onto the surface of the workpiece to achieve the same effect

The treatment effect is different with the size of steel shot It is emphasized that shot peening can also play a strengthening role Now the domestic equipment has entered a misunderstanding that only shot blasting can achieve the purpose of strengthening.

What the enterprise uses for strengthening is shot blasting. Each has its own advantages For example, for workpieces such as gears, the shot angle of shot blasting cannot be changed,

The initial speed can only be changed by frequency conversion However, it has large processing capacity and fast speed, while shot blasting is just the opposite. The effect of shot blasting is not as good as that of shot blasting.

Sand blasting is a method that uses compressed air to blow out quartz sand at high speed to clean the surface of parts.