树脂砂冷芯盒制芯是国外在一九六八年以后出现的一种新工艺,按工艺特点大致可分为两类:吹气法和自硬法。自硬冷盒法制芯是铸造生产中的一次革命,从根本上甩开了砂芯必须用加热法烘干的工艺框框,有效地提高了砂芯的精度,大大缩短了砂芯的生产周期,节省了大量的电力和燃料,取消了庞大的烘干设备。我厂树脂砂试制组在上海机械工艺研究所的协助下,于一九七七年底进行了呋喃类树脂 Resin sand cold core box core is abroad after 1968 a new technology, according to process characteristics can be broadly divided into two categories: inflatable method and self-hardening method. The method of self-hardening cold box is a revolution in foundry production, fundamentally throwing off the frame of the sand core which must be dried by heating method, effectively improving the precision of the sand core, greatly shortening the production cycle of the sand core, Save a lot of electricity and fuel, canceled a huge drying equipment. Resin sand trial production plant in our plant with the help of the Shanghai Institute of Machinery Technology, in late 1997 conducted a furan resin