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为了确定型芯混合料强度的计算方法,对砂粒表面上的粘结剂分布情况进行了分析。采用粘结剂在其膜层内流动方向,作为判断砂粒表面上的粘结剂膜稳定性的标准,如果粘结剂流向膜层较薄的一边,则膜是稳定的,因为粘结剂的迁移会导致增加膜厚度的不均匀性,结果使粘结剂膜在其最薄处断裂。当两个砂粒的粘结剂膜互相接触时,连接区域中由于部分粘结剂被挤
In order to determine the strength of the core mixture calculation method, the distribution of the binder on the surface of the sand was analyzed. The direction of flow of the adhesive within its film is used as a criterion for judging the stability of the adhesive film on the surface of the sand and the film is stable if the adhesive flows to the thinner side of the film because the Migration results in increased inhomogeneity in film thickness, with the result that the adhesive film breaks at its thinnest. When the adhesive films of the two sand particles are in contact with each other, the adhesive in the connection area is squeezed by the part of the adhesive