连铸板坯电磁搅拌技术的发展现状及讨论

杨宝; 张慧; 王明林; 王学兵; 刘斌; 刘帅

doi:10.7513/j.issn.1004-7638.2021.05.023

连铸板坯电磁搅拌技术的发展现状及讨论

doi: 10.7513/j.issn.1004-7638.2021.05.023

杨宝^1,,
张慧¹,
王明林¹,
王学兵¹,
刘斌¹,
刘帅^{1, 2}

1.
钢铁研究总院连铸技术国家工程研究中心，北京 100081
2.
北京科技大学冶金与生态工程学院，北京 100083

详细信息

作者简介:
杨宝(1991—)，男，在读博士生，主要研究方向：连铸过程工艺研究及铸坯质量控制，E-mail：ybvip1991@163.com。

中图分类号: TF777
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出版历程
- 收稿日期: 2021-07-07
- 刊出日期: 2021-10-30

Review of continue casting slab electromagnetic stirring technology

1.
National Engineering Research Center of Continuous Casting Technology of Central Iron & Steel Research Institute, Beijing 100081, China
2.
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 简述了连铸板坯电磁搅拌技术的发展过程和现存问题，重点阐述了连铸板坯生产过程中结晶器内和二冷区电磁搅拌的工作原理和技术特点，对电磁搅拌器的安装位置进行了归纳，同时总结了板坯结晶器电磁搅拌和二冷区电磁搅拌的研究现状，探究了影响板坯电磁搅拌效果的因素及其主次关系，归纳了用于二冷区电磁搅拌支撑辊的作用及需继续探究的方向，分析了板坯电磁搅拌技术对铸坯内元素分布和等轴晶区间隙率的影响，为以后的板坯电磁搅拌研究者提供参考。
- 连铸 /
- 板坯 /
- 结晶器 /
- 电磁搅拌 /
- 二冷区
Abstract: The development process and existing problems of electromagnetic stirring technology for continuous casting slabs were briefly described, focusing on the working principle and technical characteristics of electromagnetic stirring in the mold and the secondary cold zone during the production of continuous casting slabs. The installation position of the electromagnetic stirrer and the research status of electromagnetic stirring in the slab mold as well as electromagnetic stirring in the secondary cold zone were summarized. The factors affecting the electromagnetic stirring effect of slab and their primary and secondary relationships were discussed, and the electromagnetic stirring support roll used in the secondary cold zone was summarized. The role of slab electromagnetic stirring technology and the direction to be further explored were analyzed. The influence of slab electromagnetic stirring technology on the element distribution and equiaxed grain gap ratio in the cast slab was analyzed.
- continue casting /
- slab /
- mold /
- electromagnetic stirring /
- secondary cooling zone

HTML全文

图 1 连铸板坯结晶器电磁搅拌器

Figure 1. Continuous casting slab mold electromagnetic stirrer

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图 2 电磁控流装置示意

Figure 2. Sketch of flow control mold

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图 3 二冷区电磁搅拌原理

Figure 3. The principle of electromagnetic stirring in the second cooling zone

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图 4 钢液的流场形状

Figure 4. The shape of flow field

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图 5 行波磁场搅拌器

Figure 5. Line wave magnetic field stirrer

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图 6 电磁推力与频率的关系

Figure 6. The relationship between electromagnetic and frequency

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图 7 电磁搅拌辊支承托辊示意

Figure 7. Schematic diagram of electromagnetic stirring roller support roller

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表 1 板坯连铸过程二冷区用电磁搅拌器的特点

Table 1. Characteristics of electromagnetic stirrer used in secondary cooling zone of slab continuous casting process

类型	感应器数量	感应器绕组	电流/A	中心电磁推力（mmFe）	作用面	对扇形段改造	优点	缺点
辊后式	1台，单面安装	铜管绕组，迭绕式	2000	35～50	单侧	连铸机结构及辊列需改造	寿命长	磁力小；位置不可调
磁极插入式	2台，对面安装	扁铜管绕组，克兰姆式	2×700	85～110	内外弧双侧	辊列结构需改造	磁力大；寿命长；适用范围广	需特制扇形段；铸坯易鼓肚
辊式	4根两对，对面安装	扁铜线绕组，克兰姆式	2×400	一对60～80；两对并列：90～110	内外弧双侧	-	安装位置灵活；磁力大；适用范围广	寿命短；维护较麻烦

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