| 防止S31803双相钢5 mm热连轧卷板边裂的工艺实践 |
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| 引用本文： | 李国平,张威,李俊,范新智.防止S31803双相钢5 mm热连轧卷板边裂的工艺实践[J].特殊钢,2010,31(1):36-37. |
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| 作者姓名： | 李国平 张威 李俊 范新智 |
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| 作者单位： | 太原钢铁(集团)有限公司技术中心,太原030003 |
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| 摘 要： | S31803双相不锈钢(%:0.019C、22.50Cr、5.40Ni、3.15Mo、0.18N)200 mm连铸坯热轧成5 mm卷板易产生边裂。通过控制钢中S含量≤0.005%,加RE-Si-Fe合金变质硫化物,将钢中氧含量由53×100-6降至26×10-6,提高铸坯等轴晶比例,控制铸坯加热温度1150～1250℃,有效地防止5 mm热连轧卷板边裂的产生。
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| 关 键 词： | 双相不锈钢 热连轧卷板 边裂 工艺改进 |
| 收稿时间： | 2009-07-01 |
Process Practice to Prevent Edge Crack of 5mm Hot Continuous-Rolled Strip Coil of S31803 Duplex Stainless Steel |
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| Li Guoping,Zhang Wei,Li Jun,Fan Xinzhi.Process Practice to Prevent Edge Crack of 5mm Hot Continuous-Rolled Strip Coil of S31803 Duplex Stainless Steel[J].Special Steel,2010,31(1):36-37. |
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| Authors: | Li Guoping Zhang Wei Li Jun Fan Xinzhi |
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| Affiliation: | Technical Center, Taiyuan Iron and Steel (Group) Co Ltd, Taiyuan 030003 |
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| Abstract: | Edge crack of 5 mm strip coil of S31803 duplex stainless steel ( % ：0. 019C,22. 50Cr,5. 40Ni ,3. 15Mo, 0. 18N) rolled from 200 mm slab is often occurred. It is available to prevent the formation of edge crack of 5 mm hot continuous-rolled strip coil by controlling S content in steel ≤0. 005% and adding RE-Si-Fe alloy to modify sulfide, decreasing oxygen content in steel from 53 x 10 -6 to 26 x 10 -6, increasing equiaxed zone ratio in cast slab, and-controlling slab heating temperature at 1 150 - 1 250℃. |
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| Keywords: | Duplex Stainless Steel Hot Continuous-Rolled Strip Coil Edge Crack Process Improvement |
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