【摘要】 针对莱钢特钢厂中轧车间大规格圆钢（６５～８５ｍ ｍ ）所出现的表面麻坑的成因进行分析，发现钢坯在加热炉中生成的氧化铁皮在轧制过程中未能脱净是表面麻坑产生的主要原因。为此提出了改善烧嘴控制、降低炉内氧化性气氛、钢坯出炉轧制前翻钢９０°等有效措施。更多还原

【Abstract】 Through cause analysis to produced scalemark on the face of big size round steel(65～85mm) in medium section rolling workshop of special steel plant of Laiwu iron and steel group Co.,Ltd.,it is discovered that the main cause produced scale mark on the face of big size round steel is having scale on the rolled billet face which is heated in heating furnace.For overcoming this defect,the some effective measures consisted of improving the burner control of heating furnace,decreasing the oxidizing atmosphere in heating furnace and turning the billet for 90 degree before it is out of the furnace and rolled are puted forward.更多还原