The particle size of steel shot exerts a significant impact on blasting results. Specifically, the particle size directly determines cleaning efficiency, surface roughness and overall cleaning quality.
Impact of Particle Size on Cleaning Efficiency
Coarse steel shot: Large-sized steel shot delivers stronger impact force and can rapidly strip thick dirt and rust layers. However, each kilogram contains fewer individual particles, leading to low coverage rate and suboptimal overall cleaning efficiency.
Fine steel shot: Though its impact force is weaker, fine steel shot features a large number of particles per kilogram and high coverage. It can clean tiny intricate details and is ideal for workpieces requiring delicate surface finishing.
Impact of Particle Size on Surface Roughness
Larger particle size: Larger steel shot grains create deeper indentations on workpiece surfaces during blasting, resulting in higher surface roughness values.
Smaller particle size: Conversely, fine steel shot lowers surface roughness and yields a smoother surface finish.
Application Scenarios for Steel Shot of Different Grain Sizes
Coarse steel shot: Suitable for large workpieces; quickly removes heavy contaminants and thick rust layers.
Fine steel shot: Designed for precision surface finishing workpieces; ensures thorough cleaning of micro-details and reduces surface roughness.
