The reason for the inconsistent density of steel sand produced by the sandblasting machine

　　There are three reasons for the uneven density of steel sand produced by sandblasting machines:

　　(1) The sandblasting machine equipment has unstable spray gun travel speed when spraying steel grit. When the walking speed of the spray gun is slow and fast, the amount of steel grit sprayed by both is the same per unit time, but the distribution area of the steel grit is smaller in the former and larger in the latter. Due to the same amount of steel grit distributed on different surface areas, there will inevitably be a phenomenon of uneven density.

　　(2) The sandblasting machine has unstable air pressure during operation. When an air compressor is used for multiple spray guns, the air pressure is difficult to stabilize. When the air pressure is high, more steel sand is sucked in and sprayed out, while when the air pressure is low, the opposite is true, that is, the amount of steel sand sucked in and sprayed out is less. When the amount of steel sand sprayed is high, the sprayed steel sand surface will inevitably appear dense, while when the amount of steel sand sprayed is low, the steel sand surface will inevitably be sparse.

　　(3) The distance between the nozzle of the spray gun and the surface of the workpiece is too large. When the muzzle of the spray gun is close to the surface of the workpiece, the spraying range is small but concentrated, appearing dense. When the muzzle of the spray gun is far away from the surface of the workpiece, although the amount of steel sand sprayed is still the same, the sprayed area expands, and it will appear sparse at this time.