Differences between sand blasting and shot blasting in Dalian

Removal, polishing and sand blasting of rough surface of cast iron and workpiece after heat treatment process can remove all wastes (such as oxide skin, oil stain and other residues) on the surface of precision casting and workpiece after heat treatment process, polish and polish the surface of workpiece, improve the smoothness of workpiece, expose symmetrical and consistent primary colors of metal materials, and make the surface of workpiece more beautiful, generous and beautiful.

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. At the same time, steel shot or iron shot impacts the part surface at high speed, resulting in lattice distortion and deformation of the part surface and increasing the surface hardness. It is a method to clean the part surface. Shot blasting is often used to clean the casting surface or strengthen the part surface.

Differences between sand blasting and shot blasting in Dalian

Shot blasting is a process that uses a high-speed rotating impeller to shoot the shot out at high speed, hit the workpiece surface, and clean or strengthen the workpiece surface.

The materials used in shot blasting include steel shot, aluminum shot, glass ball and ceramic shot.

Although the shot blasting and shot blasting processes have different jet power and mode, they are all aimed at impacting the workpiece at high speed, and their effects are basically the same. In comparison, shot blasting is relatively fine and easy to control accuracy, but the efficiency is not as high as shot blasting, which is suitable for small workpieces with complex shape; Shot blasting is economical and practical, easy to control efficiency and cost. The number of shot can be controlled to control the spraying effect, but there will be dead corners. It is suitable for batch processing of large plane and single workpiece.

In fact, the casting cleaning is not just shot blasting. For large parts, the drum sand cleaning is generally carried out first, that is, the riser of the casting is cut off and then rolled in the drum. The parts collide with each other in the drum, and most of the sand on the surface is cleaned first, and then shot blasting or shot blasting is carried out.

Sand blasting is a method that uses compressed air to blow quartz sand out 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. Commonly 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.