Comparison between shot peening and sandblasting in Dalian metal surface treatment:

Comparison between shot peening and sandblasting in Dalian metal surface treatment:

Shot peening is a process that uses compressed air as the driving force, and is sprayed onto the surface of the workpiece by the high-speed airflow of compressed air to clean or strengthen the surface of the workpiece.

Glass shot for shot peening and glass shot for other purposes are two different concepts. The characteristic of glass shot size for shot peening is that its hardness is not less than 6-7 Mohs, and it has a certain toughness, with a low roundness rate of not less than 90%. However, there is no requirement for the hardness of road reflective glass beads. Generally, ordinary glass can be used as the raw material, and the roundness rate is required to be 75% lower.

Dalian Metal Surface Treatment Sandblasting is simply the use of a high-speed jet beam formed by compressed gas to drive the spraying of materials, usually quartz sand, diamond sand, iron sand, etc., onto the surface of the workpiece at high speed. Due to the impact and cutting of the abrasive on the workpiece surface, the workpiece surface can obtain a certain degree of cleanliness and different roughness, thereby improving the mechanical properties of the workpiece.

The difference between shot peening and sandblasting

Shot peening and sandblasting both use high-pressure air or compressed air as power to blow it out at high speed and impact the surface of the workpiece to achieve cleaning effects, but the effect varies depending on the medium chosen.

After sandblasting treatment, the dirt on the surface of the workpiece is removed, and the surface of the workpiece is slightly damaged, resulting in a significant increase in surface area, thereby increasing the bonding strength between the workpiece and the coating/coating.

The surface of the workpiece after sandblasting treatment is metallic in its natural color, but due to its rough surface, light is refracted away, resulting in no metallic luster and a dull surface.

After shot peening treatment, the dirt on the surface of the workpiece is removed, and the surface of the workpiece is minimally damaged, resulting in an increase in surface area. Due to the fact that the surface of the workpiece is not damaged during the processing, the excess energy generated during processing will lead to surface strengthening of the workpiece substrate.

The surface of the workpiece that has undergone shot peening treatment is also of metallic natural color, but due to the spherical surface, some of the light is refracted, so the workpiece is processed in a matte effect.

Sandblasting causes changes in the surface condition of the workpiece, achieving a certain level of cleanliness and different roughness, improving the mechanical properties of the workpiece surface, increasing the coating adhesion of the coating material, prolonging the durability of the coating film, and also facilitating the leveling and decoration of the coating. Sometimes, it is also a method of chemical heat treatment to activate the surface of the workpiece. Used on glass products, it can be used for surface texturing of glass or for artistic carving. Many aluminum alloys also use sandblasting technology for surface cleaning.