Differences and advantages between sand blasting and 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. It is also called sand blowing in the factory. It can not only remove rust, but also remove oil. It is very useful for coating. It is often used for rust removal on the surface of parts; Surface modification of parts (this is the purpose of small wet sand blasting machine sold in the market. The sand is usually corundum and the medium is water); 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 the force, the quality requirements of the joint surface are very high. At this time, the joint surface must be treated by sand blasting.

Dalian sand blasting is used for complex shape, easy to remove rust by hand, low efficiency, poor on-site environment and uneven rust removal. General sandblasting machines have sandblasting guns of various specifications. As long as it is not a particularly small box, you can put the gun in and clean it. The supporting product of pressure vessel - the head adopts sand blasting to remove the oxide skin on the workpiece surface, and the diameter of quartz sand is 1.5mm ~ 3.5mm. One kind of processing is to use water as a carrier to drive emery to process parts, which is a kind of sand blasting.

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. High speed shot blasting is a common method to improve the surface hardness of parts, or shot blasting is used to strengthen the surface of parts

Both shot blasting and sand blasting can clean and decontaminate the workpiece. The purpose is to prepare for the next cloth of the process, that is, to ensure the roughness requirements of the next process, or to ensure the consistency of the surface. Shot blasting can strengthen the workpiece, so sand blasting is not obvious. Generally, shot blasting is small steel ball and sand blasting is quartz sand. Number of sub items according to different requirements. Sand blasting and shot blasting are used in precision casting almost every day. Min can sandblasting