The sandblasting machine uses compressed air as the power to form a high-speed jet beam to spray the spray material on the surface of the workpiece to be processed at a high speed, so that the mechanical properties of the outer surface of the workpiece surface are changed. Due to the impact and cutting action of the abrasive on the surface of the workpiece, the portable sand blasting machine obtains a certain degree of cleanliness and different roughness on the surface of the workpiece, and improves the mechanical properties of the workpiece surface, thus improving the fatigue resistance of the workpiece, It increases the adhesion between it and the coating, extends the durability of the coating film, and is also conducive to the leveling and decoration of the coating. The sand blasting machine removes impurities, variegated colors and oxide layers on the surface, and at the same time makes the surface of the medium Roughening has the effect of increasing the residual stress on the surface of the substrate and improving the surface hardness of the substrate.
The purpose of portable sand blasting machine:
1. The sand blaster machine is used to clean the surface of the workpiece. The automatic sandblasting machine can be used as the corrosion layer on the metal, the residual salt and oxide layer on the surface of heat-treated parts, the oxide layer on the surface of rolled parts, the oxide layer on the surface of forging parts, the oxide layer on the surface of welding parts, the sand and oxide layer on the surface of castings, The residual dirt and tiny burrs on the surface of the machined parts, the surface of the old machine parts, etc. are treated to remove the surface adhesion layer and reveal the nature of the matrix.
2. Sandblasting equipment is used for pretreatment of the workpiece surface before coating. The sandblasting machine can be used as a pre-treatment process for various electroplating processes, brush plating processes, spraying processes, and bonding processes to obtain an active surface and improve the adhesion between the plating, coating, and bonding parts.
3. The automatic sandblasting machine can change the physical and mechanical properties of the workpiece. The portable sand blasting machine can change the surface stress state of the workpiece, improve the lubrication conditions of the mating parts, reduce the noise during the movement of the mating parts, harden the surface of the workpiece, and improve the wear resistance and fatigue strength of the parts.
4. The portable sand blasting machine is used for the finishing of the surface of the workpiece. Sandblasting equipment can change the surface roughness Ra value of the workpiece to produce a matt or diffusely reflective workpiece surface to achieve the purpose of finishing.
Choose different sand blasting machines according to the types of workpieces. For steel structural parts, in order to improve production efficiency, of course, the press-in sand blasting machine is preferred. For the surface finishing of glass and other handicrafts or aluminum alloy parts, you must choose suction-type sandblasting equipment, because it does not require too much processing force. For the dust-free workshop, of course, the wet sandblasting machine is the main choice, but the workpiece is preferably aluminum alloy or stainless steel that can be processed in water; for other materials, even if it dries quickly, water stains will occur. May affect coating quality.
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