Abstract:The scar defect of a high carbon tool steel was analyzed by SEM and EDS. The results showed that obvious decarburization occurred in this area in the hot rolling process. The coarse decarburized grain led to the local plastic deterioration of the strip surface. During the hot rolling process, due to the different plasticity of different parts of the strip, the deformation was different, resulting in scar defects. Thermal simulation tests were carried out on the high carbon tool steel to find out the high temperature plasticity of the material. By controlling the hot charging temperature, the time of the slab in the furnace, the temperature of the slab out of the furnace and the reasonable finishing temperature of the hot rolling, the occurrence of the surface scaling of the high carbon tool steel was effectively controlled.
刘兰霄, 周娜, 刘娟, 张云鹤, 徐彬, 呼智勇. 高碳工具钢表面翘皮缺陷分析及控制措施[J]. 中国冶金, 2021, 31(11): 59-61,66.
LIU Lan-xiao, ZHOU Na, LIU Juan, ZHANG Yun-he, XU Bin, HU Zhi-yong. Analysis and control measures of scar defect of high carbon tool steel[J]. China Metallurgy, 2021, 31(11): 59-61,66.