Steel shot is a specialized spherical particle crafted from premium materials and subjected to rigorous heat treatment. It possesses a balanced blend of moderate hardness, robust toughness, exceptional impact resistance, long-lasting durability, superior rebound capabilities, rapid cleaning speeds, minimal consumption, zero breakage, and outstanding technical performance.

This advanced shot blasting media ensures metal surfaces attain a pristine cleanliness level adhering to the GBT8923-1989 standard, while also achieving a surface roughness ranging from Rz=10 to 150μm. This not only enhances the metal's specific surface area but also significantly improves the adhesion of paint post-application, translating into substantial economic benefits. It represents the pinnacle of shot blasting and metal abrasive rust removal technology in China.

Steel shot finds widespread application across diverse industries, including aerospace, automotive, sandblasting and painting, consumer goods manufacturing, container manufacturing and maintenance, foundries, granite cutting, shipbuilding and repair, oil and gas pipelines, plant maintenance, and metal processing.

1.Steel Shot Selection: The efficacy of steel shot is intimately tied to cleaning performance, surface roughness, and operational costs. Density, a crucial factor, directly impacts the lifespan of steel shot. Low-density shot indicates internal porosity, cracks, or high carbon content, predisposing it to breakage during use.

Quality-assured steel shot undergoes gradual wear, necessitating periodic replenishment of nominal-sized shot to maintain consistent gradation and cleaning quality. During cleaning, the shot's surface peels off in layers, gradually reducing in size, and thus, continuous replenishment is vital to preserve the shot's quantity and particle size distribution, ensuring stable cleaning outcomes.

Changes in replenishment methods and shot particle sizes significantly influence cleaning efficiency. Larger shot particles exit the blasting nozzle first, maintaining a stable hot spot and cleaning efficiency, while particle size variations can disrupt this balance, leading to decreased performance. The balance between impact force and coverage rate determines optimal cleaning; large shot particles offer strong impacts but limited coverage, while small particles ensure high coverage but weaker impacts.

Graded steel shot, comprising 40% to 50% of nominal-sized shot mixed with progressively smaller particles, optimizes both impact force and coverage, maximizing cleaning efficiency and minimizing surface roughness.

2.Key Factors Affecting Cleaning Results:

· Particle Size & Projection Speed: Larger shot particles and higher projection speeds increase surface roughness. Graded shot offers lower roughness values than single-sized shot.

· Graded Shot Application: Significantly reduces surface roughness and enhances cleaning efficiency.

· Feeding Method: Timely replenishment and maintaining consistent shot gradation are essential to maintain cleaning efficiency and surface quality.

· Blasting Time: Impacts surface roughness, stabilizing over time.

Reputable steel shot manufacturers leverage advanced technologies and extensive experience to tailor shot compositions to specific equipment requirements, ensuring optimal shot peening results.