冷芯盒射芯机采用的是气体硬化法，用树脂射砂后，通以气体使砂芯硬化。射芯机上另装有通气板，射砂慢盒后，将芯盒工作台稍稍下降一段距离，在射头与芯盒之间插入通气板，再将芯盒与通气板压紧，这时由通气板引入硬化气体，从芯盒顶上的射孔引入砂芯，并穿过砂芯经下面的排气孔排出，经过短时间通气使砂芯硬化，砂芯硬化后，再通过通气板通入空气，使空气穿过已硬化的砂芯，将残留在砂芯中的有毒的硬化气体冲洗除去，残气通过排气孔排入专门的净化装置。

The cold core box core shooting machine adopts gas hardening method. After sand spraying with resin, the sand core is hardened by gas. The core box is fitted with a ventilation plate, and the core box work table is slightly reduced by a certain distance. The core box and the core box are inserted into the core box, then the core box and the ventilation plate are pressed. The sclerosing plate is introduced into the sclerosing gas, the perforation from the top of the core box is introduced into the core, and the sand core is discharged through the exhaust hole below. The sand core is hardened by a short time ventilation. After the sand core is hardened, the air passes through the ventilated plate, and the air passes through the hardened sand core to remove the toxic hardened gas remaining in the sand core, and the residual gas is discharged into a special purification device through the vent hole.