利用图像分析仪测定了表征石墨颗粒形状特征值的面积、圆度和目标外廓长度,讨论了表述石墨球化率的各种计算法,并借助SPSS计算软件,根据国标GB/T 9441-1988求出它的球化率。试验结果表明,利用该法可提高工作效率,可避免参照GB/T 9441-1988标准附录A中表1比对法产生的人为误差。通过各种计算法的比对分析,认为采用石墨面积率平均值和方差更能反映样品的实际情况。SPSS软件在球化率计算中的应用,可弥补通用图像分析仪在该方面计算的不足,学习和操作都很容易。

The shape characteristic of area,roundness and perimeter on graphitic particle is determined by image analyzer and discussion on diversified computing methods for graphite nodularity is carried out,and nodularity of graphite is calculated by SPSS software according to GB/T 9441-1988 national standard. The result shows the way can be improved work efficiency and to avoid artificial antitheses errors refer to tab.1,appendix A of GB/T 9441-1988,and it is considered that mean and standard error value of graphitic area ratio is more closed to true sample state,and it is easily and quickly to calculated nodularity of graphite by SPSS statistical software and to remedy the defaults of universal image analyzer in the calculation.