Sandblasting machines belong to the category of air conveying machinery.

It is the process of using compressed air in the pipeline to transport powdered particles (with a diameter of 1-4mm) from one location to another, converting kinetic energy into potential energy, causing high-speed moving sand particles to wash away the surface of the object, thereby improving the surface quality of the object

The sand particles are pushed forward by compressed air in the pipeline, exhibiting two states: suspended and pulsating.

The ideal working condition requires that the sand particles present a uniform suspended flow state in the pipeline. The appropriate amount of sand supplied, as well as the appropriate air volume and air pressure, are the most critical factors determining the flow effect of the sand particles. The size of the air volume should ensure that the flow rate of the air in the pipeline is at least greater than the settling speed of the sand particles, and the air pressure is sufficient to overcome the friction loss and resistance of the air pushing the sand particles to flow in the pipeline, in order to ensure the smooth flow of the sand particles in the pipeline.

However, as the pipeline grows, the wind pressure gradually decreases, the airflow speed decreases, and the suspended particles first exhibit non-uniform suspended flow, leading to an uneven flow state of density. When the airflow speed is less than a certain value, a pulsating flow state occurs. As the airflow speed further decreases, some material particles will stagnate at the bottom of the pipeline, while the other part will slide forward, causing unstable movement of the stagnant material layer, ultimately forming a blockage and causing work failure. This is something that should be avoided during the sandblasting process.

Due to the impact and cutting effect of abrasives on the surface of the workpiece, the sandblasting machine achieves a certain degree of cleanliness and different roughness, improving the mechanical properties of the workpiece surface. Therefore, it improves the fatigue resistance of the workpiece, increases the adhesion between it and the coating, prolongs the durability of the coating film, and is also conducive to the leveling and decoration of the coating, removing impurities, impurities, and oxide layers from the surface, Simultaneously roughening the surface of the medium, eliminating residual stress in the workpiece and improving the surface hardness of the substrate.

Dafeng sandblasting machine wholesale manufacturer: Yancheng Dafeng District Outstanding Machinery Equipment Co., Ltd. mainly produces various models of sandblasting cleaning equipment, sand treatment equipment and other mechanical industry products. The main products include roller type, crawler type, hook type, suspension type, through type plate, profile pre-treatment line, sandblasting coating room, sand mixing machine, loose sand machine and other sand treatment equipment, various industrial environmental dust removal equipment, supporting wear-resistant protective plates, steel shot abrasives and other products.