一、什么叫流态自硬砂,它有那些特点流态自硬砂是在原砂中加入适量的发泡剂、硬化剂、粘结剂、水等附加物,在机械搅拌作用下,使其具有流动性,经一段时间能自行硬化的一种新型的造型材料。流态自硬砂的主要优点如下:1.混好的流态砂可直接灌入砂箱或芯盒中,过一段时间就自行硬化成型,节省人工上砂、振实、撞实、压实等工序,从而大大降低了劳动强度,改善了劳动条件,缩短了 First, what is the flow of the self-hardening sand, it has those characteristics of the flow of self-hardening sand in the original sand by adding the right amount of foaming agent, hardener, binder, water and other add-ons, under the mechanical stirring effect, make A new type of modeling material that has fluidity and can harden itself over time. The main advantages of the fluidized hard sand are as follows: 1. The mixed fluid sand can be directly poured into the sand box or the core box. After a period of time, the sand is self-hardened to save artificial sand, vibration, impact, compaction Other processes have greatly reduced labor intensity, improved working conditions, and shortened