82B盘条质量研究

Investigation of 82B Wire Rod Quality

通过试验分析连铸坯成分偏析、非金属夹杂物、钢中O和N含量、轧制工艺、轧后控冷工艺等因素对82B盘条质量的影响。研究表明,盘条中心碳偏析严重,易使盘条在拉拔时断裂,产生杯锥状断口;连铸坯表面局部增碳,使盘条在拉拔时断裂,产生笔尖状断口;盘条中的非金属夹杂物,使盘条在拉拔和捻制时因应力作用而造成钢丝断裂。提出进一步提高82B盘条质量的建议。

To analyze the effect of such factors as segregation in continuous casting billet, non-metallic inclusions, oxygen and nitrogen contents in steel, rolling process and cooling process after rolling on quality of 82B wire rod. The investigation indicates that the serious carbon segregation in the center of wire rod is easy to make wire rod break in drawing and bring on cup-cone shape fracture, local carbureting on the surface of continuous casting billet make wire rod break in drawing and bring on pen tip shape fracture, non-metallic inclusions in wire rod cause steel wire rupture in wire drawing and stranding for stress. The suggestions of improving quality of 82B wire rod are put forward.