| 120 t RH自然脱碳精炼低碳钢QD08的生产实践 |
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| 引用本文： | 李海,刘列喜,张洪彪,介瑞华,王立青,陆曼,徐雷.120 t RH自然脱碳精炼低碳钢QD08的生产实践[J].特殊钢,2018,39(3):13-16. |
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| 作者姓名： | 李海 刘列喜 张洪彪 介瑞华 王立青 陆曼 徐雷 |
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| 作者单位： | 芜湖新兴铸管有限责任公司炼钢部，芜湖241000 |
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| 摘 要： | 基于生产数据对120 t RH精炼低碳钢QD08(/%:≤0.07C,0.15～0.35Si,0.25～0.45Mn,≤0.035P,≤0.035S)进行了RH碳氧反应的热力学、动力学分析和自然脱碳分析,得出RH精炼自然脱碳的优化工艺。结果表明,BOF终点温度≥1650℃,RH初始温度≥1 600℃,BOF终点C]0.04%～0.10%,P]≤0.018%,出钢前加顶浇石灰200 kg,出钢不加合金和脱氧剂,RH真空度4～8 kPa,6～8 min可使钢水C]≤0.05%。
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| 收稿时间： | 2017-12-05 |
Production Practice for Low Carbon Steel QD08 Steelmaking by Natural Decarburization during 120 t RH Refining Process |
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| Li Hai,Liu Liexi,Zhang Hongbiao,Jie Ruihua,Wang Liqing,Lu Man,Xu Lei.Production Practice for Low Carbon Steel QD08 Steelmaking by Natural Decarburization during 120 t RH Refining Process[J].Special Steel,2018,39(3):13-16. |
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| Authors: | Li Hai Liu Liexi Zhang Hongbiao Jie Ruihua Wang Liqing Lu Man Xu Lei |
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| Affiliation: | Steelmaking Division, Wuhu Xinxing Casting Pipe Co Ltd, Wuhu 241000 |
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| Abstract: | Based on the production data the analysis on thermodynamics, kinetics of RH carbon-oxygen reaction and natural decarburization in 120 t RH refining process of low carbon steel QD08 (/% ： W0. 07C, 0. 15 ?0. 35Si, 0. 25 ? 0. 45 Mn, W0. 035P, W0. 035 S) has been carried out to get the optimized process for RH refining natural decarburization. The results show that with BOF end temperature ≥l650 °C , RH initial temperature of liquid ≥1600 °C , BOF end C] 0.04% ~0.10% , end P] ≤ 0.018% , before BOF tapping adding top slag lime 200 kg and during tapping non-adding alloy and deoxidation agent, and RH vacuum 4 ~8 kPa for 6 ~ 8 min, the liquid C] shall decrease to ≤ 0,05%. |
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