起模力是从型砂中起出模型时所需力的一个指标,高压造型起模力就更为重要。起模力也表示型砂和模型间相互连结所产生的阻力的指标。本文详细说明测量合成型砂起模力的试验情况。并且还报导和讨论了膨润土,失效粘土,煤粉,糊精和这些材料组合物在不同压力下紧实时对砂型起模力影响的试验结果。湿砂造型包括把在模型周围的粘土型砂紧实以及从砂型中起出模型而形成一个型腔。对一 Die set off from the model sand from the model required force when an indicator of high-pressure modeling from the mold force is even more important. Die set-up also represents an indicator of drag created by the interconnection of the molding sand and the mold. This article describes in detail the test of the synthetic sand molding force. And also reported and discussed the test results on the impact of bentonite, spent clay, pulverized coal, dextrin and the composition of these materials on the mold release force when compacted at different pressures. Molten sand molding involves compacting the clay sand around the model and creating a cavity from the sand mold. To one