流态自硬砂的砂再生问题,直接影响到铸件的成本和流态自硬砂大面积推广使用。近年来各单位都在研究解决这一问题。南京第二机床厂工人遵照伟大领袖毛主席的教导,发扬自力更生,艰苦奋斗的精神,通过实践,找到了一种流态自硬砂回用简易再生方法,达到了旧砂全部回收,保证了流态自硬砂这项新技术在厂内 Flow of sand from the hard sand regeneration problem, a direct impact on the cost of casting and flow of large areas of hard sand to promote the use of. In recent years, all units are studying and solving this problem. Nanjing Second Machine Tool Plant workers follow the guidance of Chairman Mao, the great leader to promote self-reliance and hard work, through practice, to find a flow of hard sand reuse simple regeneration method, to achieve the full recovery of the old sand to ensure the flow State of the new technology in the factory hard sand