Sand blast cabinet coating for non-uniform reasonsThe sand blast cabinet works by taking advantage of the high-speed motion of the gun and using the Compressed air to create negative pressure. The sand material in the cyclone separator is sucked into the spray gun according to the sand pipe and then sprayed from the nozzle to the inner part of the product at high speed along the Compressed air, thus achieving the aim of sand blasting treatment. The effect of the surface layer depends on the sand material, air pressure, and distance, and different types of abrasives have different effects. The difference between the sand blast cabinet and the manual sandblasting machine lies in the sand blasting efficiency and the sand blasting uniformity. What are the reasons for uneven spraying on the sand blast cabinet?

(1) The velocity of sand blast cabinet is unstable during sand blasting. When the gun is slow and when the gun is fast, the amount of sand that comes out is the same per unit of time, but the area of sand distribution is smaller and larger in the former because the same amount of sand is distributed in different areas of the surface layer, will have different thickness and fineness.

(2) The pressure of sand blast cabinet is unstable. When an Air compressor is used as more than one gun, the air pressure is less stable. When the air pressure is high, the sand is sucked in and ejected. When the air pressure is low, the opposite is true: less sand is sucked in and ejected. When the amount of sand, the sand surface will appear thick and fine phenomenon, and when the amount of sand into small, the sand surface must be loose.

(3) The nozzle is too close and far away from the product surface. Spray the gun near the surface, spraying area is not large, but more concentrated, it looks thick and thin. When the muzzle is away from the surface, the amount of sandblasting is still so much, but the scope of sandblasting expanded, at this time there will be sparse.

Blast cleaning is a widely used process in mechanical manufacturing, were forging, casting, heat treatment, and surface treatment of parts, are all to be Shot Blast Machine to clean. Feel Free to contact us for more information on the Shot Blast Machine.