Characteristics of Sandblasting Machine Parts for Casting

Sandblasting machine parts for casting are primarily used to clean the surface of castings from oxidation, rust, and other impurities, thereby improving their surface quality and subsequent processing effects. These parts generally require wear-resistant characteristics to withstand the wear and tear caused by the high-intensity sandblasting process.

Shot Peening Effects

Shot peening refers to the effect created when abrasive particles (such as steel shots or ceramic beads) are fired at the workpiece surface during the sandblasting process. This impact effectively removes surface impurities and also enhances the hardness and fatigue resistance of the workpiece surface.

Shot peening is an important surface treatment technique widely applied to improve the surface performance of workpieces, especially in the treatment process of sandblasting machine parts for casting. This technique uses high-speed abrasives (such as steel shots, glass beads, or ceramic beads) to strike the workpiece surface, generating a series of physical and mechanical effects to clean, harden, and strengthen the surface.

The core principle of shot peening is to use the kinetic energy of abrasive particles to repeatedly impact the workpiece surface. When these high-speed particles strike the surface, they cause plastic deformation, forming a compressive stress layer. This compressive stress layer compresses the surface, closing micro-cracks and thus enhancing the surface's fatigue resistance and wear resistance.

Wear-Resistant Characteristics of Sandblasting Machine Parts for Casting
1. Material Selection: Wear-resistant alloy steel or carbide materials are usually used to make these parts. These materials have high hardness and high wear resistance, effectively resisting damage during the sandblasting process.
   
2. Surface Treatment: Parts are typically heat-treated or hardened, such as nitriding, carburizing, or coating with hard alloy layers to further enhance wear resistance.
   
3. Design Considerations: The structural design of the parts must also take wear resistance into account, such as adding reinforcing ribs or using replaceable wear liners to extend the parts' service life.

Impact of Shot Peening
Shot peening affects the surface of parts in the following ways:

1. Surface Cleanliness: Efficiently removes oxidation, rust, and other impurities, providing a clean surface.
   
2. Surface Hardening: Through shot peening, the surface metal deforms and hardens, forming a hardened layer that improves the workpiece's wear resistance and fatigue resistance.
   
3. Surface Quality: The shot peening process also alters the surface roughness of parts, achieving the required surface finish, thereby improving the quality of subsequent processing.

The wear-resistant characteristics and shot peening effects of sandblasting machine parts for casting play a crucial role in the entire sandblasting process. Selecting appropriate materials and designs, along with suitable surface treatments, can significantly enhance the parts' service life and performance. Additionally, achieving optimal shot peening conditions can lead to higher surface quality and performance, meeting various industrial application requirements.