How to ensure surface smoothness after Dalian shot blasting processing?

Shot blasting is a common surface treatment process suitable for cleaning metal surfaces, removing dirt and oxide layers, and improving surface quality and roughness. It has extensive applications in fields such as metal manufacturing, automotive manufacturing, aerospace, and mechanical manufacturing. In practical applications, it is necessary to select appropriate shot blasting machines and materials according to specific process requirements, and control reasonable shot blasting parameters to achieve good processing results.

The principle of shot blasting processing is to use the centrifugal force generated by the high-speed rotating shot blasting wheel to eject metal shot blasting particles and impact the surface of the workpiece at high speed, in order to remove surface dirt such as oxide layer, rust, paint, welding slag, etc. When shot blasting particles impact the surface of the workpiece, the energy is converted into kinetic energy and thermal energy, causing a series of physical changes on the surface of the workpiece, including surface filling, strengthening, and improving surface quality. Shot blasting is mainly used for surface treatment of metal products such as castings, forgings, and molds, and is commonly used in industries such as automobiles, aerospace, and metallurgy.

How to ensure surface smoothness after Dalian shot blasting processing?

Choosing a suitable shot blasting medium is the key to ensuring surface smoothness. Different shot blasting media have different hardness and shape, and their impact effects on the surface are also different. Generally speaking, harder shot blasting media can better remove surface oxide layers and dirt, but it is also prone to surface scratches. On the contrary, softer shot blasting media are prone to burrs and depressions. Therefore, when selecting shot blasting media, it is necessary to comprehensively consider the hardness and surface requirements of the material and select a suitable medium.

Secondly, controlling the parameters of shot blasting processing is also an important means to ensure surface smoothness. The parameters of shot blasting processing include the type and size of shot blasting medium, spraying speed, spraying angle, shot blasting time, etc. Reasonably adjusting these parameters can control the impact force and action time of shot blasting, thus achieving good processing results. Excessive impact force and prolonged application time can lead to excessive surface wear and scratches, thereby affecting surface smoothness. Therefore, it is necessary to determine appropriate processing parameters through practice and experience summary during the operation process.

In addition, paying attention to the maintenance and cleaning of shot blasting equipment is also the key to ensuring surface smoothness. Shot blasting equipment is a tool for implementing shot blasting processing. If the equipment is used improperly or not maintained for a long time, it will not only affect the processing effect, but also generate a large amount of dust and debris, further polluting the surface of the material. Therefore, timely cleaning and maintenance of shot blasting equipment, maintaining the normal operation and cleanliness of the equipment, is an important measure to ensure the smoothness of the processing surface.

The shot blasting processing equipment includes shot blasting machines, negative pressure systems, conveying systems, and dust removal systems. The shot blaster is the core part of the entire equipment, which is driven by a motor to rotate the shot blaster wheel at high speed and project the shot onto the metal surface. The negative pressure system is used to generate negative pressure, absorb and recover shot blasting and cleaned metal particles, and send them back to the shot blasting machine for recycling through the conveying system. The dust removal system is used to filter and clean the generated exhaust gas and dust, maintaining a hygienic and clean working environment.