S3220型叶片式松砂机共有36块叶片,采用45号钢板或10mm 厚弹簧钢板制成,经淬火后使用。由于叶片顶部和砂团发生强烈摩擦、碰撞,导致叶片从顶部向中间迅速磨损,造成松砂效果降低,使铸件质量受到影响。因此,叶片使用3个月左右,即得更换。为延长松砂叶片的使用寿命,重庆第二纺织机械厂在45号钢叶片本体极易磨损的顶部,镶焊废旧硬质合 S3220-type leaf sanding machine a total of 36 leaves, 45 steel or 10mm thick spring steel plate made of, after quenching and use. Due to the strong friction and collision between the top of the blade and the sand mass, the blades rapidly wear from the top to the middle, resulting in the decrease of the loose sand effect and the quality of the castings being affected. Therefore, the leaves used about 3 months, that is, replaced. In order to extend the service life of the loose sand leaves, Chongqing No. 2 Textile Machinery Factory in the 45 steel blade body wear easily the top of the mosaic of solid waste incandescent