Does the size of steel grit have any requirements for roughness?

　　Of course! Using steel grit for sandblasting can not only remove the oxide scale, rust, stains, etc. on the surface of the workpiece, but also improve the roughness of the workpiece, increase its surface adhesion, and make subsequent coating, plating and other processes more solid. However, you need to pay attention to the size of the steel grit.

　　First, the particle size of the steel grit should be selected according to the roughness requirements of the workpiece. If the roughness requirements are relatively high, you can choose medium and coarse sand; if the roughness requirements are relatively low, you can choose fine sand or ultra-fine sand.

　　Secondly, when using steel grit for sandblasting, you should pay attention to the distance and angle of the sandblasting. The distance should be moderate and the angle should be correct to ensure that the surface of the workpiece is completely covered, and there will be no leakage or accumulation. At the same time, pay attention to the consumption of steel grit and add new steel grit in time to ensure the effect of sandblasting.

　　In short, does the size of steel grit have any requirements for roughness? Of course! When using steel grit to sandblast workpieces, you should choose appropriate steel grit according to the roughness requirements, shape and size of the workpiece, and pay attention to the blasting distance and angle to ensure the blasting effect.