Cr,Mo増量によるハイスロール材の熱間摩耗特性の向上
2003 年 89 巻 6 号 p. 680-685
詳細
2003 年 89 巻 6 号 p. 680-685
The influence of alloying elements on microstructure and wear resistance of High Speed tool Steel roll (HSS roll) was studied in order to improve wear resistance and surface deterioration resistance of HSS roll. Although the volume of eutectic M7C3 carbide increased with the increase in C and Cr contents, wear resistance was not improved. The increase in Cr and Mo contents in good balance improved the wear resistance of HSS Roll remarkably, as eutectic carbide of M7C3 type became tough and the damage on the worn surface was prevented.
The destructive prevention mechanism of carbide was discussed from change of the alloy concentration and the lattice constant of carbide by increasing in Cr and Mo contents.
