射芯机能否生产出好质量的产品，射芯机模具起着关键的作用。一般来说，射芯机模具分为冷芯盒和热芯盒两种。

The core ejection machine plays a key role in whether the core machine can produce good quality products. Generally speaking, the core ejection machine is divided into two types: cold box and hot core box.

冷芯盒模具使用树脂砂作原料，用三乙胺固化；也有用水玻璃砂作原料，用二氧化碳固化的，水玻璃砂的流动性差，只能用在简单产品工艺上，因此现在使用的非常少。冷芯盒模具适合体积比较大质量比较高的产品。

Cold core box mold using resin sand as raw material, three ethylamine solidified; also water glass sand as raw material, carbon dioxide solidified, water glass sand fluidity is poor, can only be used in the simple product process, so the use of very few. Cold box mold is suitable for products with relatively large volume and high quality.

热芯盒模具是通过加热的方式来固化砂芯产品，现在都是采用电加热的方法。热芯盒模具使用覆膜砂作原料，又叫覆膜砂模具，使用这种模具的射芯机也叫覆膜砂射芯机。热芯盒模具适合制造中小型结构复杂的产品，因此在铸造厂被广泛应用。

The hot core box mold is made by heating the sand core product, and now it adopts electric heating method. Hot core box mold uses coated sand as raw material, also called film coated sand mold. The core ejection machine using this mold is also called film coated sand core machine. Hot box mold is suitable for manufacturing complex products of medium and small size, so it is widely used in foundry.