低碳钢的真空感应熔炼脱氮、脱氧
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- 英文论文题名：Denitrification and Deoxidation during Vacuum Induction Melting of Low Carbon Steel
- 论文作者：郭西良 ; 余建波 ; 侯渊 ; 李晓飞 ; 任兴孚 ; 任忠鸣
- 英文论文作者：State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy &School of Materials Science and Engineering ; Shanghai University
- 年：2016
- 作者机构：省部共建高品质特殊钢冶金与制备国家重点实验室上海市钢铁冶金新技术开发应用重点实验室和上海大学材料科学与工程学院;
- 论文关键词：真空 ; 脱氮 ; 脱氧 ; 热力学 ; 动力学
- 英文论文关键词：vacuum ; denitrification ; deoxidation ; thermodynamic ; kinetic
- 会议召开时间：2016-05-19
- 会议录名称：第十九届（2016年）全国炼钢学术会议大会报告及论文摘要集
- 语种：中文
- 分类号：TF761.2
- 学会代码：ZGJS
- 会议名称：第十九届（2016年）全国炼钢学术会议
- 会议地点：中国湖南长沙
- 主办单位：中国金属学会炼钢分会
- 学会名称：中国金属学会
- 页数：1
- 文件大小：60k
- 原文格式：O
- 会议级别：全国
摘要
本文利用真空感应炉精炼低碳钢,分析了精炼时间对氮氧含量和夹杂物含量的影响。研究表明:在1600℃,1Pa的精炼条件下,随着精炼时间的增加,氮含量降低,经计算,此实验条件下氮的理论溶解度为1.4ppm,远低于实验值3.5ppm,说明脱氮过程受动力学的影响,其脱氮速率常数为1.6×10~(-2)cm/s:而氧含量则先降低后略有增加,主要与钢液中[O]的扩散速度和氧化铝坩埚的供氧速度有关。夹杂物含量统计结果表明,夹杂物含量随精炼时间的增加而减少,这主要是由于在真空感应熔炼条件下氮氧含量的降低所造成的。
The effect of refining time on the content of O,N and conclusions in low carbon steel by vacuum induction melting at1600℃ and 1Pa are investigated.The results show that the contents of O and N decrease significantly with the prolongation of refining time.When 1he refining time is prolonged to 20 min,the content of O increases appreciably.Thermodynamic and kinetic calculations about denitrification and deoxidation have been done.Because of the limitation of nitrogen diffusion rate,theoretical solubility of nitrogen(1.4ppm) is far below than experimental result(3.5ppm).The rate constant of nitrogen desorption in low carbon steel is 1.6×10~(-2)cm/s.It is found that oxygen content is higher than calculated results after deoxidation by carbon,which is related to oxygen diffusion rate and decomposition of alumina crucible.Accordmg to statistical results,amounts of inclusions reduce greatly after refining.
The effect of refining time on the content of O,N and conclusions in low carbon steel by vacuum induction melting at1600℃ and 1Pa are investigated.The results show that the contents of O and N decrease significantly with the prolongation of refining time.When 1he refining time is prolonged to 20 min,the content of O increases appreciably.Thermodynamic and kinetic calculations about denitrification and deoxidation have been done.Because of the limitation of nitrogen diffusion rate,theoretical solubility of nitrogen(1.4ppm) is far below than experimental result(3.5ppm).The rate constant of nitrogen desorption in low carbon steel is 1.6×10~(-2)cm/s.It is found that oxygen content is higher than calculated results after deoxidation by carbon,which is related to oxygen diffusion rate and decomposition of alumina crucible.Accordmg to statistical results,amounts of inclusions reduce greatly after refining.
引文