What is the effect of sand blasting gas pressure on the surface properties of the substrate

       The change of blasting gas pressure has the greatest influence on the internal stress of the substrate surface. The use of high-pressure gas to blast the surface of thin plates and long parts often causes distortion of the workpiece, and the surface of soft substrates (such as aluminum, zinc, babbitt, etc.) Inlaid sandblasted abrasive. In addition, with the increase of blasting gas pressure, the surface activity of the substrate increases, the surface roughness value increases, and the blasting efficiency increases. For steel, stainless steel and alloy steel workpieces, the gas pressure value should be ≥ 0.5MPa, and for soft substrate workpieces, the gas pressure value should be ≤ 0.3MPa.