Shot Blasting Equipment Combined with Low Carbon Steel Shot Delivers Synergistic Performance, Elevating Quality of Casting Surface Treatment

Shot blasting machines impart kinetic energy to abrasives through high-speed impellers to achieve all-round impact cleaning. Low carbon steel shot features excellent toughness, moderate hardness and low breakage rate, enabling perfect compatibility with the equipment. During coordinated operation, high-speed projected low carbon steel shot efficiently removes bonded sand, oxide scale, flash and burrs on casting surfaces, delivering uniform coverage and minimizing uncleaned blind spots.

Castings treated by this process boast remarkable advantages. Firstly, the castings feature fine and even surface texture without chipped edges or excessive surface erosion, ensuring dimensional precision. This solution is particularly suitable for ductile iron castings and precision thin-wall castings. Secondly, spherical impact from steel shot generates uniform residual compressive stress on the casting surface layer, which restrains surface microcracks and improves the fatigue service life of castings. Meanwhile, the clean and flat base surface greatly boosts adhesion of subsequent paint and electroplating coatings and reduces the risk of coating peeling.

From the production operation perspective, low carbon steel shot wears gradually during impact with low fragmentation rate and long recycling life, significantly lowering workshop dust. It not only cuts procurement consumption of steel shot, but also reduces abrasion on wearing parts including impeller blades and liners of shot blasting machines, extending equipment maintenance cycles and realizing cost reduction and efficiency improvement.