Production Practice for Low Carbon Steel QD08 Steelmaking by Natural Decarburization during 120 t RH Refining Process

李海; 刘列喜; 张洪彪; 介瑞华; 王立青; 陆曼; 徐雷

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Production Practice for Low Carbon Steel QD08 Steelmaking by Natural Decarburization during 120 t RH Refining Process

更新时间：2026-01-21

- Production Practice for Low Carbon Steel QD08 Steelmaking by Natural Decarburization during 120 t RH Refining Process
- Special Steel Vol. 39, Issue 3, Pages: 13-16(2018)
- 作者机构：
  
  芜湖新兴铸管有限责任公司炼钢部,芜湖,241000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 December 2017，
  
  Online First：02 June 2022，
  
  Published：02 June 2018
- 稿件说明：
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李海, 刘列喜, 张洪彪, et al. 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.
DOI：

李海, 刘列喜, 张洪彪, et al. 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. DOI：

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%。

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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