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发明公开
CN109518085A 一种含磷高强IF钢及其表面麻点缺陷的消除方法 有权 转让

一种含磷高强IF钢及其表面麻点缺陷的消除方法
摘要：
本发明公开了一种含磷高强IF钢及其表面麻点缺陷的消除方法，属于轧钢技术领域。所述含磷高强IF钢的钢种化学质量百分比为：C 0.0060-0.0080wt％，Si 0.10-0.20wt％，Mn 1.1-1.20wt％，P 0.075-0.095wt％，S≤0.012wt％，Alt 0.025-0.050wt％，Nb 0.010-0.020wt％，Ti 0.050-0.070wt％，B 0.0004-0.0010wt％，N≤0.0040wt％。本发明含磷高强IF钢及其表面麻点缺陷的消除方法可以消除含磷高强IF钢连退产品表面发麻。
摘要（英）：

The invention discloses phosphorus-containing high-strength interstitial free (IF) steel and a method for eliminating a surface pit defect thereof and belongs to the technical field of steel rolling.The steel grade of the phosphorus-containing high-strength IF steel comprises, by chemical mass, 0.0060-0.0080 wt% of carbon, 0.10-0.20 wt% of silicon, 1.1-1.20 wt% of manganese, 0.075-0.095 wt% of phosphorous, less than or equal to 0.012 wt% of sulfur, 0.025-0.050 wt% of aluminum, 0.010-0.020 wt% of niobium, 0.050-0.070 wt% of titanium, 0.0004-0.0010 wt% of boron and less than or equal to 0.0040wt% of nitrogen. By means of the phosphorus-containing high-strength IF steel and the method for eliminating the surface pit defect thereof, pits generated in the surface of continuous annealing products of the phosphorus-containing high-strength IF steel can be eliminated.

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