How to control the particle size to meet different steel shot application requirements?

　　The effect of particle size distribution on steel shot performance

　　Cleaning efficiency:

　　Steel shot with a reasonable particle size distribution can improve cleaning efficiency. Graded steel shot (containing steel shots of different particle sizes) has a higher cleaning efficiency than steel shots of a single particle size because it takes into account both the impact force and coverage during cleaning.

　　Large-sized steel shots have a large impact energy and can quickly remove a large amount of material, but may result in a large surface roughness; small-sized steel shots have a slower processing speed but can obtain a finer surface.

　　Surface roughness:

　　The larger the particle size, the greater the compressive stress generated when the steel shot impacts the workpiece surface, and the higher the surface roughness value.

　　The smaller the particle size, the lower the surface roughness value, and the smoother the workpiece surface.

　　Coverage:

　　After shot peening and cleaning with small-sized steel shots, the surface coverage of the object is higher; large-sized steel shots have a lower surface coverage.

　　Workpiece surface quality:

　　Steel shots with uniform particle size distribution can treat the workpiece surface more evenly, reducing local over-treatment or under-treatment.

　　Methods for controlling particle size to meet different application requirements

　　Raw material selection and cutting process:

　　Select the appropriate wire diameter according to the required particle size.

　　Use precise mechanical operation and cutting technology to ensure that the shape of the cut steel shots is regular and consistent, and the particle size meets the requirements.

　　Screening and grading:

　　Use screening equipment to grade the steel shots according to the particle size.

　　Through multiple screening and grading operations, steel shots with uniform particle size and meeting the requirements are obtained.

　　Subsequent treatment:

　　The cut steel shots are subjected to subsequent treatment such as rolling to further improve their shape and surface quality.

　　Rolling can make the steel shots more round and smooth, and improve their use effect in metal surface treatment.

　　Quality control:

　　Carry out multiple quality inspections throughout the production process to ensure that the particle size and shape of the steel shots meet the predetermined standards.

　　Screen and remove unqualified products in a timely manner to ensure the quality of the final product.

　　Matching application requirements:

　　Choose the appropriate particle size distribution according to specific application requirements. For example, for occasions that require high cleaning efficiency, you can choose graded steel shots; for occasions that require fine surfaces, you can choose small-size steel shots.