借用径向受压圆盘的弹性力学分析和光测弹性试验结果,并籍助固化的树脂砂粘结剂的热失重分析和差热分析,对型砂的热态劈拉强度测试方法进行了试验研究。探讨了型砂的常温劈拉强度与常温轴拉强度的关系,同时首次提出了采用热态劈拉法间接地测试型砂热态轴拉强度的方法。 Based on the elastic mechanics analysis and the optical elasticity test of the disc under radial compression and the thermogravimetric analysis and differential thermal analysis of the cured resin binder, the thermal splitting tensile strength test method of the sand was studied. . The relationship between the splitting tensile strength at room temperature and the axial tensile strength at room temperature was discussed. At the same time, the method of indirectly measuring the hot tensile strength of the molding sand by hot splitting method was first proposed.