Steel shot specifications and models for shot blasting machines

　　Specifications and models of steel shot used in shot blasting machines, curved (surface) blades, can be divided into front curved blades (blade bent forward along the direction of rotation) and rear curved blades (blade bent backward along the direction of rotation);

　　According to data, tubular blades were born to adapt to high-hardness non-metallic abrasives. The material chosen for the tubular blade is ceramic. It is characterized by wear resistance and can be used continuously at a certain angle after wear, so its service life is longer than that of straight blades. However, since the blades appeared in the early seventies, due to their complex structure, and once worn, due to the different amounts of wear of each blade, the rotation of the shot blasting wheel is unbalanced, and the vibration of the shot blasting machine is intensified. It is difficult to say whether this kind of shot blasting machine is suitable for large shot blasting machines that spray metal projectiles.

　　Under the conditions of the same diameter and the same speed, straight blades. The absolute speeds of forward-curved blades and backward-curved blades are different. The speed of forward curved blades is the highest, followed by straight blades, and the speed of backward curved blades is the lowest.

　　Due to the different pressure and friction exerted by projectiles on the blades, a simple analysis shows that the front curved blades bear greater pressure and friction, followed by straight blades, and the rear curved blades are the smallest. Therefore, it is believed that the front curved blades have the shortest life, the straight blades have a longer life, and the rear curved blades have the longest life.

　　In summary, tubular blades have not been widely used at home and abroad. The most widely used are pre-curved blades, backward-curved blades and straight blades. Among them, the forward curved blade experiences the greatest stress and wear, but has the highest ejection speed and the best ejection efficiency. The backward curved blades have less force, more uniform force, and the longest service life, but the ejection speed is the lowest and the ejection effect is the worst. Straight leaves are relatively uniform. Therefore, three types of blades were selected according to different situations and different requirements