Abstract: The cord steel 82A is melt by 80 t LD-LF-CC process. It is found that ladle refractories have obvious influence on Al content in steel. Two kinds of ladle refractories ( magnesia carbon brick and magnesia alumina carbon brick) are used for industrial production. The test results show that when 82 A cord steel is produced by using magnesia carbon brick ladle with refining slag basicity 0.9, the content of Al in steel can be controlled below 0.001% , and the inclusions can be controlled in the low melting point zone, which is beneficial to improve the quality of 82A cord steel and the wire breaking rate decreases from original 1% to 0.42%.

摘要： 帘线钢82A经80 t LD-LF-CC工艺冶炼,分析发现钢包耐火材料对钢中Al含量有明显的影响。通过采用两种钢包耐火材料(镁碳砖和镁Al碳砖)进行工业生产。试验结果表明,精炼渣系碱度采用0.9,钢包采用镁碳耐火材料生产帘线钢82A,可以将钢中Al含量控制在0.001%以下,夹杂物控制在低熔点区,有利于提高帘线钢82A的质量,断丝率由原1%降至0.42%。