What is shot peening?
author: YITECH
2024-06-25
Shot peening is a process of striking a metal surface with a small, spherical material to create a compressive residual stress layer. This process can improve the material's fatigue life and resistance to stress cracking, making it useful in applications like aerospace, automotive, and industrial manufacturing. Shot peening is commonly done using shot blasting machines, which use high-pressure air or centrifugal force to propel the shot particles at the surface being treated.
Shot peening is to wear, remove or etch the surface layer of the metal surface or workpiece by spraying high-speed shot streams, such as small steel balls, cast steel sand and other media, to achieve better surface finish, adhesion, removal of corrosion or other surface treatment effects. In general, the processes of shot peening and sand blasting are very similar, except that the particle size of shot peening materials is larger than that of sand blasting, and shot peening is not suitable for manual operation and is easy to get injured.
Shot peening is often used for surface treatment of metals such as steel and aluminum. In shot peening surface treatment, it is necessary to select appropriate shot peening materials such as glass beads, corundum, steel shots, etc. according to the purpose and needs of the work, and different materials and particle sizes can be selected according to needs.
Shot peening is often used for surface treatment of metals such as steel and aluminum. In shot peening surface treatment, it is necessary to select appropriate shot peening materials such as glass beads, corundum, steel shots, etc. according to the purpose and needs of the work, and different materials and particle sizes can be selected according to needs.
Advantages of shot peening
1. Remove surface dirt, corrosion and oxide layer, and the cleaning effect is obvious.
2. Greatly improve surface adhesion, which is conducive to corrosion protection and surface coating.
3. Can improve surface quality and roughness, and can achieve different surface finish.
4. Shot peening is a powerful surface treatment method with a long service life.
5. It is also suitable for surface cleaning and improvement of complex shapes and large workpieces.
Disadvantages of shot peening
1. The shot peening process makes the originally absolutely clean work space dusty, which may cause certain pollution to the environment.
2. Some metal materials treated by shot peening may affect their original properties due to changes in physical properties.
3. As an organic material, the shot peening medium needs to be constantly replaced, which will produce a certain amount of waste.
4. Noise is generated during the shot peening process, which requires sound insulation treatment.
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