中间包等离子加热和电磁搅拌复合技术的研发
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- 英文论文题名：Development of Plasma Heating and Electromagnetic Stirring in Tundish
- 论文作者：钟云涛 ; 潘汉玉 ; Emmanuel Abiona ; 杨洪良
- 英文论文作者：Yuntao Zhong ; Hanyu Pan ; Emmanuel Abiona ; Hongliang Yang ; ABB(China) Ltd. ; ABB AB/Metallurgy
- 年：2016
- 作者机构：ABB(中国)有限公司;ABB AB/Metallurgy;
- 论文关键词：中包 ; 感应加热 ; 等离子加热 ; 电磁搅拌
- 英文论文关键词：tundish ; induction heating ; plasma heating ; electromagnetic stirring
- 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：TF703
- 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：4
- 文件大小：1146k
- 原文格式：O
- 会议级别：全国
摘要
等离子加热与感应加热相比,在中包包型设计和维护成本上具有一定的优势。另外一面,与感应加热90%的加热效率相比,等离子加热仅有60%的加热效率。我们对于电磁搅拌和等离子加热相结合的方案做了大量的数值研究分析。仅使用等离子加热,那么加热室的上部钢液由于浮力作用而滞流,这是由于等离子加热形成了巨大的温度梯度造成的。使用EMS,在加热室内的钢液以0.2~0.4m/s的速度旋流,这使得加热室内的钢液温度均匀化。同时,减小了中包水口处的温度波动,提高了等离子加热的热效率。
Plasma heating is advantageous over induction heating in the aspects of less impact on tundish design and lower maintenance costs.On the other hand,plasma heating has a lower heating efficiency of 60%compared to that of induction heating90%.The idea of utilizing electromagnetic stirring was numerically investigated in combination with plasma heating.With plasma heating alone,the flow in the upper part of heating chamber is dampened due to the buoyancy force caused by the large temperature gradient of plasma heating.With EMS,one rotational flow with the velocity of 0.2-0.4 m/s is created in the heating chamber,and the temperature in the heating chamber is homogenized.The temperature response time in the outlet is reduced and heating efficiency of plasma heating can be improved with EMS.
Plasma heating is advantageous over induction heating in the aspects of less impact on tundish design and lower maintenance costs.On the other hand,plasma heating has a lower heating efficiency of 60%compared to that of induction heating90%.The idea of utilizing electromagnetic stirring was numerically investigated in combination with plasma heating.With plasma heating alone,the flow in the upper part of heating chamber is dampened due to the buoyancy force caused by the large temperature gradient of plasma heating.With EMS,one rotational flow with the velocity of 0.2-0.4 m/s is created in the heating chamber,and the temperature in the heating chamber is homogenized.The temperature response time in the outlet is reduced and heating efficiency of plasma heating can be improved with EMS.
引文
[1]ASEA,"Tundish heating system brochure,"1985.
[2]H.Kimura,"Innovative Technologies in Continuous Casting Tundish,"Nippon Steel Technical Report,no.61,pp.22-28,1994.
[3]S.Kittaka,"Twin-torch type tundish plasma heater"NS-Plasma II"for continuous caster,"Nippon Steel Technical Report,No.92,pp.16-21,July 2005.
[2]H.Kimura,"Innovative Technologies in Continuous Casting Tundish,"Nippon Steel Technical Report,no.61,pp.22-28,1994.
[3]S.Kittaka,"Twin-torch type tundish plasma heater"NS-Plasma II"for continuous caster,"Nippon Steel Technical Report,No.92,pp.16-21,July 2005.