The criterion of original position statistic distribution analysis for the aluminum inclusion in steel
Haizhou Wang · Metallurgical Analysis · 2006
The determination of reference samples containing aluminum inclusion has been studied by original position analyzer for metal, and the distribution rule of the single spark discharge intensity was gained. An important parameter for the analysis of inclusion——threshold value has been confirmed with step by step method. A new method for the quantitative analysis of Al inclusion in steel has been founded. According to the results obtained by chemical analysis of phase and metallographic examination, a mathematic mode of the relation between the content of aluminum inclusion and relative frequency of abnormal spark signal has been established. When the mathematic mode was applied to the factual samples, the analytical results found by OPA were accordance with those measured by ICP-AES.