| 430铁素体不锈钢脱氮工艺 |
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| 引用本文： | 杨岩,朱荣,汤旭炜,赵飞 李超.430铁素体不锈钢脱氮工艺[J].中国冶金,2015,25(11):22-25. |
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| 作者姓名： | 杨岩 朱荣 汤旭炜 赵飞 李超 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院， 北京 100083 2. 北京科技大学高端金属材料特种冶炼与制备北京市重点实验室， 北京 100083 |
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| 基金项目： | “十二五”国家科技支撑计划;国家自然科学基金 |
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| 摘 要： | 430铁素体不锈钢中的氮能恶化晶间腐蚀、低温冲击韧性、缺口敏感性以及焊接等性能。在热力学分析的基础上，研究了430铁素体不锈钢冶炼过程中初始碳质量分数、温度、氩氧比以及冶炼时间等工艺参数与对终点氮质量分数的影响。研究表明，在一定范围内，初始碳质量分数越高，氩氧比越大，脱氮效果越好；吹氩20min左右时脱氮效果最好，脱氮率可达到60%左右，继续延长冶炼时间会有回氮现象发生。
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| 关 键 词： | 铁素体 不锈钢 GOR炉 脱氮 |
Denitrogenation process for 430 ferritic stainless steel |
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| YANG Yan,ZHU Rong,TANG Xu- wei,ZHAO Fei,LI Chao.Denitrogenation process for 430 ferritic stainless steel[J].China Metallurgy,2015,25(11):22-25. |
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| Authors: | YANG Yan ZHU Rong TANG Xu- wei ZHAO Fei LI Chao |
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| Affiliation: | （1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Beijing Key Laboratory of Special Melting and Preparation of High- End Metal Material, Universinty of Science and Technology Beijing, Beijing 100083, China） |
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| Abstract: | The nitrogen in 430 ferritic stainless steel can worsen the intergranular corrosion, the low temperature impact toughness, the notch sensitivity and the welding properties. In this paper, the effect of parameters (including initial carbon content, temperature, argon- oxygen ratio and smelting time) on the content of nitrogen at end point in smelting process for 430 ferritic stainless steel was studied. The results showed that the higher the initial carbon content and higher argon- oxygen ratio, the better the denitrogenation effect. After argon blowing for 20min, the denitrogenation effect was the best, and the denitrogenation rate could be up to about 60 %. If the smelting time was further prolonged, the increase of nitrogen content in liquid steel could be observed. |
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| Keywords: | ferrite stainless steel GOR denitrification |
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