ＰＶＦ型铸造粘结剂是１７－９９聚乙烯醇改性后得到的一种新型水溶性粘结剂，它与水泥配合使用，配制自硬砂，保留了聚乙烯醇自硬砂的主要优点，如无臭、无毒、无公害，加入量少，硬化后强度高，发气量低，溃散性好等，而且生产成本较低，可代替桐油、合脂砂制作形状复杂和清理困难的型芯，适用于铸铁、铸钢和有色合金件的生产。 PVF casting binder is a new type of water-soluble binder modified by 17-99 polyvinyl alcohol. It is used in combination with cement to make self-hardening sand, which retains the main advantages of self-hardening polyvinyl alcohol. Such as odorless, non-toxic, pollution-free, adding less, high strength after hardening, low gas generation, good collapse and so on, and lower production costs, instead of tung oil, synthetic sand production complex shape and difficult to clean the core , Suitable for the production of cast iron, cast steel and nonferrous alloy parts.