By statistical analysis, the relationship between the matrixhardness of the high pearlite-containing nodular iron and its nodularity and pearlite content was investigated.
通过统计分析，研究了高珠光体含量球铁的基体硬度与球化率和珠光体含量的关系。
2
By studying the application of sandwich-structured synthetic diamond core bits, following results are concluded: Matrixhardness can be HRC3-5 higher than that of similar ordinary ones;
It demonstrated that the experiment of hardness is likely to upset in the experiment of compression. Hardness tester indenter make matrix metal plastic deformation and viscous flow happen.