本文针对某钢厂所生产的82A轮胎帘线钢盘条的拉拔脆断现象进行研究。通过对断口金相组织进行观察分析及硬度检测判定其脆断的原因之一为盘条表面的损伤。通过对断口夹杂物进行分析并和中包夹杂物进行对比分析,得到部分大型夹杂物产生的原因为洁净器保护渣及中包覆盖剂的卷入,从而得知导致盘条拉拔脆断的另一个原因为非稳态浇铸导致的卷渣和二次氧化产物。 In this paper, the drawing brittle fracture phenomenon of 82A tire cord steel wire rod produced by a steel mill was studied. Through the fracture microstructure analysis and hardness testing to determine one of the reasons for brittle fracture of the wire rod surface damage. Through the analysis of the fracture inclusions and contrastive analysis of inclusions in the inclusions, some of the large inclusions are generated due to the entrainment of the cleaner flux and the covering agent, so that it can be seen that the wire rod is brittle Another reason is unsmooth casting caused by the slag and secondary oxidation products.