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树脂砂是靠化学作用自行快速硬化而使砂型(芯)获得强度。由于这种特点,使得其对原材料的要求、混合料的配制、造型和制芯工艺以及旧砂回用等与粘土砂有所不同,其主要设备也有较大的差别。图1为呋喃树脂自硬砂铸造生产流程图。本讲重点是围绕各主要工序对树脂自硬砂的工艺特点及工艺设备进行阐述。
Resin sand is rapidly hardened by chemical action to obtain sand (core) strength. Because of this feature, making its requirements on raw materials, mixture preparation, molding and core making process and the reuse of used sand and clay sand are different, the main equipment is also a big difference. Figure 1 is a furan resin self-hardening sand casting production flow chart. The focus of this talk is to focus on the main processes of the resin from the hard sand process characteristics and process equipment described.