减少冷轧低碳钢轧材表面夹杂缺陷实践  

Practice of Reducing Inclusion Defects on Surface of Cold Rolled Low Carbon Steel Products

作　　者：杜林 苏建铭 王一名 孙群[1] DU Lin;SU Jianming;WANG Yiming;SUN Qun(General Steelmaking Plant of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China)

机构地区：[1]鞍钢股份有限公司炼钢总厂,辽宁鞍山114021

出　　处：《鞍钢技术》2024年第4期64-67,共4页Angang Technology

摘　　要：针对冷轧低碳钢轧材表面夹杂缺陷问题,分析主要原因是结晶器保护渣卷入钢水导致,采取优化保护渣理化性能,优化铸机拉速、水口浸入深度和氩气流量等措施后,降低了卷渣风险,冷轧低碳钢表面夹杂缺陷指数由4降至1,提高了产品表面质量。With regard to the problem that the defects of inclusions occurred on the surface of low carbon cold rolled steel products,the causes leading to the defects were analyzed and it was concluded that the main cause was caused by some mould fluxes which were introduced into molten steel.After taking such measures as optimizing the physical and chemical properties of mould fluxes,optimizing the casting speed of a casting machine,adjusting the immersion depth of a nozzle and regulating the argon-blowing flow,the risk of mould fluxes being introduced was reduced.And therefore,the index for inclusion defects was decreased from 4 to 1,and the surface quality of low carbon cold rolled steel products was improved.

关 键 词：冷轧低碳钢 表面夹杂 保护渣 拉速 水口浸入深度 氩气流量 

分 类 号：TF769[冶金工程—钢铁冶金]