破碎指数是高压造型用型砂的韧性指标,它关系到起模性的好坏,直接影响高压造型线的生产效率和铸件质量。文中利用落样式和落球式两种测试破碎指数装置较系统地研究了重要参数对破碎指数和其他重要性能的影响规律,在此基础上综合国内外有益的生产经验,提出了重要参数的最佳值,以利于生产过程控制韧性和其他重要性能。 The crush index is the toughness index of molding sand used in high pressure molding. It is related to the quality of molding, which directly affects the production efficiency of high pressure molding line and casting quality. In this paper, the influence of the important parameters on the crush index and other important properties is studied systematically by using both falling and falling ball crushing index devices. On this basis, based on the beneficial domestic and foreign production experience, the optimal parameters Value, in order to facilitate the production process control toughness and other important properties.