| 铁水预处理-80 t LD-RH-LF-CC生产流程对管线钢夹杂物的影响 |
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| 引用本文： | 王国承,黄浪.铁水预处理-80 t LD-RH-LF-CC生产流程对管线钢夹杂物的影响[J].特殊钢,2009,30(5):31-33. |
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| 作者姓名： | 王国承 黄浪 |
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| 作者单位： | 1. 江西理工大学材料与化学工程学院，赣州 341000;
2. 新余钢铁公司，新余 338001； |
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| 摘 要： | 通过鱼雷罐铁水喷粉脱硫处理,转炉加低硫废钢、出钢挡渣和加Si-Fe、Mn-Fe脱氧,控制终点C]0.026%～0.030%,RH脱气处理和加Mn-Fe合金化,LF高碱度渣精炼和喂Ca线冶炼管线钢(%:0.039～0.042C、1.56～1.62Mn、0.01Ti、0.05Nb、0.03V)。检验结果表明,生产管线钢铸坯中的硫含量为(10～18)×10-6,TO]30×10-6,铸坯中大部分夹杂物尺寸≤40μm,主要夹杂物为钙铝酸盐,Al2O3夹杂和单独存在的MnS夹杂很少,有利于提高管线钢抗HIC(氢致开裂)性能。
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| 关 键 词： | LD-RH-LF 管线钢 洁净度 夹杂物 |
| 收稿时间： | 2009-03-12 |
Effect of Metal Pretreatment-80 t LD-RH-LF-CC Process Flow on Inclusion in Pipeline Steel |
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| Wang Guocheng,Huang Lang.Effect of Metal Pretreatment-80 t LD-RH-LF-CC Process Flow on Inclusion in Pipeline Steel[J].Special Steel,2009,30(5):31-33. |
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| Authors: | Wang Guocheng Huang Lang |
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| Affiliation: | 1. School of Material and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000;
2. Xinyu lron and Steel Co,Xinyu 338001； |
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| Abstract: | The pipeline steel(%:0.039~0.042C,1.56~1.62Mn,0.01Ti,0.05Nb,0.03V) was melted by torpedo desulfurization,adding low sulphur scrap in LD,LD tapping with slag stopper and adding deoxidizer Si-Fe and Mn-Fe and controlling end C] 0.026%～0.030%,RH degassing treatment and alloying added Mn-Fe,LF refining with high basicity slag and feeding Ca wire.Examination results showed that in cast billet of pipeline steel the sulphur content was (10~18)×10-6,the TO]=30×10-6,the size of most inclusions ≤40 μm,and the main inclusion was calcium aluminate with few Al2O3 and individual MnS being available to increase the resistance on hydrogen-induced cracking (HIC). |
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| Keywords: | LD-RH-LF |
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