一、绪言在机器制造工厂的化验室中,铸铁的分析往往占有很大的工作量,尤其是矽的分析,用化学方法分析所需的时间要三小时左右。针对矽的工作量,我们认为假如能用光谱分析来代替化学分析,这将是很有价值的一项工作。因为用光谱分析,不论在操作方面,以及所需的工时方面,还较化学分析简单和迅速。根据以上的情况,我们对铸铁中矽的分析进行了一些工作。据文献所载,铸铁中矽的分析一般都用火花光源,由于我们试验室目前还 I. INTRODUCTION In the laboratory of a machine-building factory, the analysis of cast iron usually takes up a lot of workload, especially for the analysis of silicon. The time required for chemical analysis is about three hours. For the workload of silicon, we think it would be a valuable work to use spectral analysis instead of chemical analysis. Because of the spectral analysis, it is simpler and faster than chemical analysis, both in terms of handling and in the amount of man-hours required. Based on the above, we have done some work on the analysis of silicon in cast iron. According to the literature, the analysis of silicon in cast iron generally use spark light source, because our laboratory is still