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Pre-treatment and introduction of sand blasting machine


Sand blasting uses the impact of high-speed sand flow to clean and roughen the substrate surface. Use compressed air as the power to form a high-speed jet beam to spray the blasting material (copper ore sand, quartz sand, corundum sand, iron sand, Hainan sand) to the surface of the workpiece to be processed at high speed, so that the appearance or shape of the outer surface of the workpiece surface changes. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece has a certain degree of cleanliness and different roughness, and the mechanical properties of the surface of the workpiece are improved, so the fatigue resistance of the workpiece is increased, and it and the coating are increased. The adhesion between the layers prolongs the durability of the coating film and is also beneficial to the leveling and decoration of the coating.
Pre-sandblasting process The pre-processing stage refers to the treatment of the surface of the workpiece before the workpiece is sprayed and sprayed with a protective layer.
The quality of the sandblasting process before and after treatment affects the adhesion, appearance, moisture resistance and corrosion resistance of the coating. The pretreatment is not done well, and the rust will continue to spread under the coating, causing the coating to peel off. After carefully cleaning the surface and the general simple cleaning of the workpiece, the coating can be compared with the exposure method, the life span can be 4-5 times. There are many methods for surface cleaning, but the most commonly accepted methods are: solvent cleaning, pickling, hand tools, power tools.
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