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选取存在典型翘皮缺陷的钢板,利用SEM、EDS和金相显微镜对钢板表面翘皮缺陷的形成原因进行了分析。结果表明:呈条状分布的夹杂物、保护渣的卷入,氧化铁皮压入是引起钢板表面出现翘皮缺陷的主要原因。但是形成机理有所不同,夹杂物和保护渣作为裂纹源在轧制力的作用下逐步演化成的翘皮缺陷,而氧化铁皮的压入是由于残留的高温氧化铁皮在轧制力的作用下进入钢板次表层,使钢板不能被轧合而形成的。
Select the existence of typical skellet defects of steel, the use of SEM, EDS and metallographic microscope on the surface of the skin surface defects caused by the formation of barking were analyzed. The results show that the inclusions distributed in the form of strips, the involvement of the mold flux and the pressing of the oxide scale are the main causes of the flaw on the surface of the steel sheet. However, the formation mechanism is different, inclusions and mold flux as a crack source in the gradual evolution of the force under the action of the flip-flop defects, and the pressure of the iron oxide skin is due to the residual high-temperature iron oxide under the action of the rolling force Sub-surface into the steel, so that steel can not be formed by rolling.