这里介绍一种决定铸铁基体组织的计算图表如下图所示,横座标代表Si+LgR的值,从座标代表碳的含量。使用这个图表,可以根据要求的基体组织及铸件的相对厚度,求出铸铁中应有碳矽含量。图表中的四条曲线,表示C(Si＋LgR)的数值,这些曲钱将整个图表分为五个区 Here is a calculation of cast iron substrate matrix calculation diagram shown below, the abscissa represents the value of Si + LgR, from the coordinates of the carbon content. Use this chart, according to the requirements of the matrix structure and the relative thickness of the casting, found in the cast iron should have carbon content. The four curves in the chart represent the values ​​of C (Si + LgR), which split the entire chart into five zones