一、前言砂型紧实度的大小及其分布状况是衡量砂型质量的重要指标,它的测量国内外曾研究应用过多种方法,如“秋纳也夫钻”法、套筒切割法、有色分格填砂法、分层切割法等。这些方法均以直接取样称重为基础,其共同缺点是依靠手工操作,测量速度慢,误差较大,重复性差。为了 I. Preface The size and distribution of sand compactness is an important index to measure the sand quality. It has been studied and applied in many ways at home and abroad, for example, “Qiu Na Yefu” method, sleeve cutting method, colored Sub-grid sand filling method, such as stratified cutting. These methods are based on direct sampling weighing, the common disadvantage is that rely on manual operation, the measurement speed is slow, the error is large, the repeatability is poor. in order to