叶片是抛丸装置的易耗零件。目前国内各厂矿使用的叶片,其材质多为低铬合金铸铁。各种铸铁叶片的共同特点是硬度高,冲击韧性低。硬度高较耐磨,而冲击韧性低却使叶片易于脆断。我厂在使用铸铁叶片的实际运行中,其寿命一般只有12小时左右,其失效的主要形式是早期断裂。叶片在使用时断裂,使拋头运行平衡被破坏,既影响抛丸装置的正常工作,又易于损坏设备。因此,目前国内多数单位都使用双圆盘叶轮,以增加设备使用性能的 Blades are easy-to-consume parts for shot blasting equipment. At present, the leaves used by various factories and mines in China are mostly made of low chromium alloy cast iron. The common features of various cast iron blades are high hardness and low impact toughness. Higher hardness than wear resistance, but low impact toughness makes the blade easy brittle fracture. I plant in the actual operation of the use of cast iron leaves, its life expectancy is generally only 12 hours or so, the main form of failure is early fracture. Blade in use rupture, so that throwing head running balance is destroyed, both affect the normal operation of the shot blasting device, but also easy to damage the equipment. Therefore, at present, most domestic units use double disc impellers to increase the serviceability of the equipment