2ZZ8640型二工位四十公斤热芯盒射芯机是我厂的主要制芯设备之一,缸体等主要铸件的砂芯都是这种射芯机上射制的。经调试生产,发现该机存在一些问题。几年来,在我厂党委的领导下,有关工人和技术人员密切配合,先后作了几次改进。修改后的射芯机,设备故障大大减少,为稳定生产创造了有利条件。同时,动作加快,空动一个循环仅需一分钟 2ZZ8640 two station 40 kilograms hot core box core shooter is one of the main core making equipment of our factory. The core of the main castings such as the cylinder body is shot on this core shooting machine. After commissioning production, found that the aircraft there are some problems. In the past few years, under the leadership of our factory party committee, the workers and technical staff concerned have worked closely together and have made several improvements in succession. The modified core shooting machine, equipment failure greatly reduced, to create favorable conditions for stable production. At the same time, the movement speed up, just one cycle of empty action