近十年来,国外在采用自硬砂造型和制芯方面发展很快,对提高铸件质量和精度均获得了良好的效果。随着合成树脂粘结剂的来源日趋方便,近年来对自硬砂的应用引起了普遍的重视,同时自制专门混制自硬砂的设备相继出现,自硬砂的应用更广泛了,可以预计,对性能更好的混制设备的要求会愈来愈迫切。为 In the past ten years, foreign countries have developed rapidly in adopting self-hardening sand molding and core making, and obtained good results in improving the quality and precision of castings. With the increasingly convenient sources of synthetic resin binders, the application of self-hardening sand has drawn universal attention in recent years. At the same time, self-made specialized equipment for self-hardening sand has appeared one after another, and the application of self-hardening sand is more widespread. , The demand for better performance mixed equipment will be more and more urgent. for