In the course of this experiment,core starch (β starch) was used to be as the principal binder of shell core for making 试验用 β淀粉作主粘结剂的芯砂制出了能用于铸铁件生产的壳芯 ,可以认为 ,以天然淀粉作芯砂主粘结剂用于铸造生产是完全可能的。