When many engineers first enter the mechanical industry to do design, they are confused about these three processes and do not know which process to use when writing technical requirements? Today, let's talk about these three processes: shot blasting, sandblasting, and shot blasting. 01 Shot peening Shot peening is a method of removing metal corrosion using metal pellets, powered by compressed air or mechanical centrifugal force and friction. The diameter of the projectile is between 0.2-2.5mm, the compressed air pressure is 0.2-0.6Mpa, and the angle between the jet and the surface is about 30-90 degrees.

Do you know the difference between sandblasting, shot blasting, and shot blasting?

In fact, from the name, it can be seen that "Maru" is just like a small ball, and its professional name is "Danqiu". In application, pellets are divided into cast steel pellets, cast iron pellets, glass pellets, and ceramic pellets according to their materials. Cast iron pellets. picture Cast iron pellets picture Glass Ball Shot blasting is used to remove oxide scale, rust, molding sand, and old paint film from medium and large metal products and castings and forgings with a thickness of not less than 2mm or without requiring accurate size and contour.

Widely used in large shipyards, heavy machinery factories, automobile factories, etc. Using shot peening for surface treatment results in strong impact and significant cleaning effect. 02 Sandblasting Sandblasting is the process of using the impact of high-speed sand flow to clean and roughen the surface of the substrate. It uses compressed air as power to form a high-speed jet beam that sprays the material at high speed onto the surface of the workpiece to be treated, causing changes in the appearance or shape of the outer surface of the workpiece.

It is also a mechanical cleaning method, but sandblasting is not shot blasting. Sandblasting uses sand particles (such as copper ore sand, quartz sand, diamond sand, iron sand, Hainan sand). Among the existing surface treatment methods for workpieces, sandblasting cleaning has the best cleaning effect. Sandblasting is suitable for cleaning workpieces with high surface requirements. 03 Shot blasting Shot blasting is the process of using a high-speed rotating impeller to throw small steel or iron pellets at high speed onto the surface of a component, thereby removing the oxide layer on the surface of the component.

At the same time, the high-speed impact of steel or iron shot on the surface of the part causes lattice distortion and deformation, resulting in increased surface hardness. Shot blasting is a method of cleaning the surface of the part, and is commonly used for cleaning the surface of castings or strengthening the surface of the part. picture Shot blasting is the process of using a motor to drive the impeller to rotate, relying on centrifugal force to throw balls with a diameter of 0.2-3.0 onto the surface of the workpiece, achieving a certain degree of roughness and making the workpiece more aesthetically pleasing.