Abstract: Analysis results show that the center segregation of continuous casting billet is serious, easy to cause cup and cone fracture when the rod is drawn； the non-metallic inclusions in the wire rod cause the wire fracture due to the stress when the wire rod is pulled out and twisted; if the content of O and N in steel is too high, the strength and hardness of steel will increase, and the toughness will decrease； reasonable coiling temperature and cooling rate can ensure the ideal micro structure o£ the wire rod. By controlling [O]≤20 X 10^-6, N]≤40 X 10^-6,costing liquid superheating ≤25℃,, rolling billet heating at 1100~1170 ℃ and coiling at 910~93O℃ etc process measures the drawing fracture is avoided.

摘要： 分析结果表明,连铸坯中心偏析严重,易使盘条在拉拔时,产生杯锥状断裂;盘条中的非金属夹杂物,使盘条在拉拔和捻制变形时,因应力作用而造成钢丝断裂;钢中O、N含量过高,会使钢的强度和硬度升高,塑韧性下降。合理的吐丝温度和冷却速度,能保证盘条获得理想的细索氏体组织。通过控制[O]≤20 × 10^-6,[N] ≤40 ×10^-6,连铸钢水过热度≤25℃,轧制加热1100～1170 ℃,吐丝910～930 ℃等工艺措施,避免了拉拔断丝。