What are the main differences between shot blasting machine and sand blasting machine?



     Shot blasting is to use the motor to drive the impeller body to rotate. By the action of centrifugal force, the ball with diameter of 0.2~3.0 (with casting pill, cutting pill, stainless steel pill, etc.) is thrown to the surface of the workpiece, so that the surface of the workpiece reaches a certain rough. Degree, make the workpiece beautiful, or change the welding tensile stress of the workpiece to compressive stress, improve the service life of the workpiece. It is used in most fields of machinery, repair ship\auto parts\aircraft parts\gun tank surface\ Bridge \ steel structure \ glass \ steel \ pipe \ and so on. Sandblasting (pill) is the use of compressed air as a power to spray a diameter of 40 ~ 120 mesh or 0.1 ~ 2.0 to the surface of the workpiece, so that the workpiece achieves the same effect The size of the pellets is different, and the treatment effect is different.


 

  Sand blasting is a method of using compressed air to blow out quartz sand at high speed to clean the surface of the part. The factory is also called sand blowing, not only to rust, but also to remove oil, which is very useful for painting. Commonly used for surface derusting of parts; surface modification of parts (small wet sand blasting machine sold in the market is this use, sand is usually corundum, medium is water); in steel structure, the application of high-strength bolts is a relatively advanced The method is because the high-strength joint uses the friction between the joint surfaces to transmit the force, so the quality of the joint surface is very high, and the joint surface must be treated by sand blasting. Sandblasting is used for complex shapes, easy to remove by hand, low efficiency, poor on-site environment, and uneven rust removal.

 

 

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----Laraine Lai

E-mail : laraine@mayflay.com

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