五十年代初,芯子烘干炉是制芯工部的核心设备。油砂制芯、水溶性粘结剂混合砂芯和天然砂制芯,都采用通用的烘干方法。在多数情况下,中小型芯子用烘芯板,大型芯子采用气体干燥油砂制作。目前应用的CO_2制芯法,大约是在1952年开始采用的。第一次实现了芯子在芯盒中不需要加温便可硬化,并有第一批自动制芯机投放市场。在以后的若干年内,由于机器制芯采用了如壳型法、热芯盒法、温度突变法、温芯盒 The early fifties, core drying furnace is the core equipment manufacturing department. Oil sand core, water-soluble binder mixed sand core and natural sand core, all using a common drying method. In most cases, small and medium-sized core with baking core, large core using gas-dried oil sand production. The current application of CO_2 system core method, started in about 1952. The first realization of the core in the core box does not require heating can be hardened, and the first batch of automatic core making machine on the market. In the next few years, due to the machine core using methods such as shell, hot box method, temperature mutation method, the temperature box