【摘要】 介绍了分别向SPO和DISA造型生产线供砂的两套二手美国砂处理系统的特点，概述了结合我国国情和工厂实际的拆迁原则，修改设计使之适合我用的体会。更多还原

【Abstract】 The article introduced the characteristics of two second hand moulding sand preparation systems from United States for supplying sand repectively to a SPO and a DISA mouulding Iines-. A Summary was made of the principle on which the two sand systems were disas- sembled and transfered from US to China with considering the China’ s conditions and works’ situations, and the experience with modify-ing design of two systems to suit them to use in China更多还原