由于工业的迅速发展,我厂担负的铸钢任务日益繁重,在不增加作业面积和造型技工的条件下,我厂提高单位面积产量的主要方法是采用水玻璃砂.在大量推广水玻璃砂中遇到的最大困难是华南地区目前还没有液体的CO_2供应.我厂自行设计之CO_2发生器的能力,不能满足大量生产的要求,在这种情况下,部 Due to the rapid development of the industry, the task of casting steel in our factory is becoming more and more arduous. Under the condition of not increasing the work area and modeling technicians, the main method of increasing the unit area output of our factory is to use sodium silicate sand. The biggest difficulty we encountered is that there is no liquid CO 2 supply in South China at present and our ability to design a CO 2 generator can not meet the requirements of mass production. In this case,