采用原位统计分布分析技术对不同来源的模具钢进行解析，获得了模具钢坯横剖面较大尺度范围内各化学组成的位置分布、状态分布、含量分布的一系列新信息；定量表征了不同来源模具钢的最大偏析度、统计偏析度、统计符合度、统计致密度、统计疏松度、夹杂物种类和含量以及粒度统计分布等参数的差异性，可用于不同来源模具钢质量差异解析的参考。

Through the analysis of mould steel from different sources by the original position statistic distribution analysis (OPA), new information on the position, state and content distribution of each chemical component in the cross section of mould steel was obtained in a relatively wide range. As a result, the differences among the parameters of mould steel from different sources were uantitatively characterized, including the biggest segregation, the statistic degree of segregation, statistic degree of accord with contents (statistic degree of homogeneity), the statistic density as well as the content, variety and statistic size distribution of the inclusions. The experimental results could be used as reference for analyzing the quality variance of mould steel from different sources.