Improving casting surface roughness and extending service life: Analysis of the advantages of sandblasting and shot peening

Improving surface roughness is critical for many castings that require subsequent coating or plating. Sandblasting can significantly improve coating adhesion by creating tiny grooves and textures on the surface of the casting. For example, in the production of Oem /Customized Brass Casting With Different Surface Finish, sandblasting is often used as a pre-treatment for coating or plating. After improving the surface roughness, the coating can better bond with the base metal, preventing the coating from flaking or falling off, thereby greatly improving the service life of the product.
Although shot peening is mainly used to enhance surface hardness, its fine surface roughness can also improve coating adhesion, especially in mechanical parts and automotive parts that require high-strength coating protection. Shot peened castings can ensure better adhesion of the coating, thereby improving the overall corrosion resistance of the parts.

The surface treatment of sandblasting and shot peening allows Different Surface Finish to effectively improve the wear resistance and fatigue resistance of castings. The surface roughness formed by sandblasting can increase the friction coefficient of the metal surface. In some friction accessories, the surface roughness can significantly improve the wear resistance of the parts. Shot peening effectively enhances the fatigue resistance of castings by increasing surface compressive stress. Especially in parts that require high strength and high wear resistance, such as mechanical parts and engine accessories, shot peening can significantly improve the stability of castings in high-frequency working environments. This improvement in wear resistance and fatigue resistance enables Oem /Customized Brass Casting With Different Surface Finish products that have been sandblasted and shot peened to perform well in long-term use, especially in high-load, frequent friction or high-temperature environments, ensuring long-term reliable operation of the product.

In addition to improving the functionality of castings, sandblasting and shot peening can also effectively improve the appearance of products. Sandblasting can give the surface of castings a uniform rough texture, which is suitable for castings that require specific artistic effects, such as architectural decoration, furniture accessories and other fields. The sandblasted surface can form a unique texture effect, enhancing the visual appeal of the product. Shot peening can make the surface of castings flat and have a metallic luster. In many mechanical equipment and automotive accessories, the surface of castings after shot peening has a smoother and more uniform appearance, which is suitable for applications that have high requirements for surface aesthetics.

Sandblasting and shot peening can indirectly enhance the corrosion resistance of castings by changing their surface roughness. Sandblasting makes the surface more receptive to subsequent anti-corrosion coatings or plating, thereby improving the anti-corrosion performance of the casting. In some special environments, such as marine environments, chemical media environments, etc., sandblasted castings can significantly reduce the risk of corrosion.
Shot peening effectively reduces the formation of surface cracks and avoids the spread of corrosion by forming a compression layer. Therefore, shot peening not only improves the surface strength and wear resistance, but also enhances the corrosion resistance of castings, especially for castings that need to be used in harsh environments.

Both sandblasting and shot peening are efficient surface treatment methods that can significantly improve production efficiency. In mass production, sandblasting and shot peening have obvious time advantages over traditional manual grinding, polishing and other processes, and can process a large number of castings in a shorter time. At the same time, these treatment methods can improve the performance of castings, reduce rework or repairs caused by surface defects, and further reduce production costs. For Oem /Customized Brass Casting With Different Surface Finish, sandblasting and shot peening can improve product quality and performance, as well as production efficiency and product market competitiveness, ensuring that customers can obtain higher quality castings in a shorter cycle.