从六十年代开始,一些国家的铸造工业,正在从无机粘结剂向合成粘结剂方面过渡,其目的在于提高铸件质量,同时,也获得了提高生产能力及可使用非熟练工人进行操作等好处。冷凝树脂砂就是以合成树脂作粘结剂(通常用呋喃树脂)与型砂相混合,再加入固化剂后成型,能在常温条件下发生聚合反应而硬化,使其保持固定的形状和尺寸的铸型或型芯。使用 Beginning in the 1960s, the foundry industry in some countries is now transitioning from inorganic binders to synthetic binders with the aim of improving the quality of the castings, as well as improving productivity and handling with unskilled workers benefit. Condensation resin sand is synthetic resin as a binder (usually furan resin) mixed with the sand, and then add the curing agent after forming, can be polymerized at room temperature and harden to maintain a fixed shape and size of the cast Type or core. use