以6Cr13、7Cr17MoV、8Cr13MoV高碳不锈钢为对象,通过SEM、EDS、XRD和图像分析法对比研究了不同碳含量高碳不锈钢刀剪材料经热轧和冷轧后碳化物变化。结果表明,热轧后,碳化物有明显聚集,随C含量增高,碳化物从短棒状向椭球状转变,尺寸变大。冷轧后,碳化物聚集现象基本消失,分布更加均匀,尺寸明显细化,形貌更近球形,随碳含量增高,碳化物尺寸同样变大。热轧变形量加大,使碳化物尺寸变小,但聚集更加严重。冷轧变形量加大,使碳化物更加均匀细小,但达到一定变形量后,无明显改变。6Cr13轧制板材中的碳化物类型主要是M7C3,7Cr17MoV和8Cr13MoV轧制板材中的碳化物主要是M23C6。 The changes of carbide after hot rolling and cold rolling of high carbon stainless steel cutters with different carbon content were studied by SEM, EDS, XRD and image analysis with 6Cr13, 7Cr17MoV and 8Cr13MoV high carbon stainless steel. The results show that after hot rolling, the carbides are obviously aggregated. With the increase of C content, the carbide changes from short rod to ellipsoid and becomes larger in size. After cold rolling, the carbide aggregation basically disappeared, the distribution was more uniform, the size was obviously refined and the shape was closer to the sphere. As the carbon content increased, the size of the carbide became larger. Hot rolling deformation increases, the carbide size smaller, but the accumulation of more serious. Cold rolling deformation increases, the carbide is more uniform and small, but to a certain amount of deformation, no significant change. The carbide types in the 6Cr13 rolled sheet are mainly M23C6 in the M7C3, 7Cr17MoV and 8Cr13MoV rolled plates.