The automatic sandblasting machines equipped in our sandblasting workshop can spray abrasive particles at high speed to thoroughly remove dirt, oxide layers, coatings and other substances on the surface of objects, making the surface smoother and flatter. At the same time, the sandblasting machine can also accurately control the sandblasting pressure, sand grain size and spray angle to ensure that the treatment effect of each workpiece is consistent, improving the controllability and stability of production. This efficient sandblasting operation method greatly shortens the surface treatment time and improves production efficiency.