Article(id=1187341680849072478, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, articleNumber=1009-5438(2022)02-0005-03, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1644422400000, receivedDateStr=2022-02-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761013916455, onlineDateStr=2025-10-21, pubDate=1650816000000, pubDateStr=2022-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761013916455, onlineIssueDateStr=2025-10-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761013916455, creator=13701087609, updateTime=1761013916455, updator=13701087609, issue=Issue{id=1187341678487679284, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='2', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761013915892, creator=13701087609, updateTime=1761015806887, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187349609945907689, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187349609945907690, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=5, endPage=7, ext={EN=ArticleExt(id=1187341681033621858, articleId=1187341680849072478, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Production Practices on Steelmaking for High Magnetic Induction Oriented Silicon Steel, columnId=1187340472918880861, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practice and Management, runingTitle=null, highlight=null, articleAbstract=

The goal of accurately controlling various components in smelting process of high magnetic induction oriented silicon steel is realized through process optimization of the whole production line in steelmaking area of Rare Earth Steel Plate Co., where the mass fraction of total oxygen in casting blank is controlled at 0.000 4%~0.001 5%; mass fraction of aluminum is controlled at 0.027 0%~0.030 0%; mass fraction of nitrogen is controlled at 0.007 1%~0.008 3% so that the high magnetic induction oriented silicon steel could meet the needs of next step in the rolling process. As a result, its mass production is realized.

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稀土钢板材公司炼钢区域通过全产线工艺优化,实现了高磁感取向硅钢冶炼过程中精确控制各类成分的目标。其中铸坯全氧质量分数控制在0.000 4%~0.001 5%之间;铝的质量分数控制在0.027 0%~0.030 0%之间;氮的质量分数控制在0.007 1%~0.008 3%之间,使高磁感取向硅钢满足下一步轧制工艺的需要,实现了高磁感取向硅钢批量生产。

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李志成(1985-),男,内蒙古包头市人,工程师, 现从事炼钢精炼生产和综合管理工作。

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李志成(1985-),男,内蒙古包头市人,工程师, 现从事炼钢精炼生产和综合管理工作。

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李志成(1985-),男,内蒙古包头市人,工程师, 现从事炼钢精炼生产和综合管理工作。

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主体设备 数量
KR铁水预处理装置 3套
260 t顶底复吹转炉 3座
260 t LF钢包精炼炉 2座
260 t RH真空脱气炉 2套
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冶炼区域主要设备

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主体设备 数量
KR铁水预处理装置 3套
260 t顶底复吹转炉 3座
260 t LF钢包精炼炉 2座
260 t RH真空脱气炉 2套
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序号 项目 技术参数
1 连铸机机型 直结晶器连续弯曲连续
矫直弧型板坯连铸机
2 连铸机台数×流数 1×2
3 连铸机基本半径/m 10
4 流间距/m 6.5
5 浇注断面厚度/mm 230、250(预留)
6 宽度/mm 900~1 650
7 定尺长度/mm 8 000~11 000
8 铸机冶金长度/m 约36
9 铸机速度范围
/(m·min-1)
0.1~2.5
10 引锭杆装入方式 上装
11 结晶器铜板长度/mm 900
12 结晶器振动装置 液压振动
13 扇形段更换方式 吊具式扇形段更换装置
14 切割方式 在线火焰切割
15 铸坯去毛刺 在线去毛刺机
16 铸坯喷号 在线喷号机
17 出坯方式 横移车+辊道热送+
推钢机/垛板台
18 出坯辊面标高/m +0.93
19 浇注平台标高/m +13.6
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1 650 mm连铸机主要技术参数

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序号 项目 技术参数
1 连铸机机型 直结晶器连续弯曲连续
矫直弧型板坯连铸机
2 连铸机台数×流数 1×2
3 连铸机基本半径/m 10
4 流间距/m 6.5
5 浇注断面厚度/mm 230、250(预留)
6 宽度/mm 900~1 650
7 定尺长度/mm 8 000~11 000
8 铸机冶金长度/m 约36
9 铸机速度范围
/(m·min-1)
0.1~2.5
10 引锭杆装入方式 上装
11 结晶器铜板长度/mm 900
12 结晶器振动装置 液压振动
13 扇形段更换方式 吊具式扇形段更换装置
14 切割方式 在线火焰切割
15 铸坯去毛刺 在线去毛刺机
16 铸坯喷号 在线喷号机
17 出坯方式 横移车+辊道热送+
推钢机/垛板台
18 出坯辊面标高/m +0.93
19 浇注平台标高/m +13.6
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熔炼号 C Si Mn P S Als Sn O N
212 XXX 42 0.056 3.13 0.102 0.014 0.007 0.027 4 0.039 0.000 6 0.007 7
212 XXX 43 0.055 3.20 0.101 0.015 0.006 0.027 2 0.041 0.000 8 0.007 5
212 XXX 44 0.056 3.16 0.094 0.014 0.007 0.029 2 0.040 0.000 8 0.007 1
212 XXX 46 0.055 3.20 0.098 0.013 0.007 0.029 2 0.038 0.000 8 0.007 6
212 XXX 47 0.055 3.23 0.098 0.011 0.006 0.029 4 0.040 0.000 7 0.007 6
212 XXX 49 0.054 3.20 0.100 0.013 0.007 0.028 0 0.041 0.000 4 0.007 3
212 XXX 50 0.057 3.34 0.099 0.012 0.007 0.027 7 0.038 0.000 5 0.008 2
212 XXX 52 0.057 3.26 0.101 0.014 0.006 0.028 3 0.039 0.000 6 0.007 2
212 XXX 53 0.052 3.36 0.100 0.012 0.006 0.027 1 0.040 0.001 4 0.007 8
212 XXX 54 0.052 3.27 0.100 0.010 0.006 0.026 3 0.042 0.000 5 0.007 1
212 XXX 55 0.051 3.19 0.098 0.012 0.005 0.027 1 0.039 0.000 7 0.007 4
212 XXX 57 0.056 3.27 0.104 0.014 0.006 0.028 2 0.040 0.000 6 0.008 2
212 XXX 58 0.054 3.21 0.103 0.015 0.006 0.029 3 0.040 0.000 8 0.007 6
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中间包化学成分(质量分数)%

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熔炼号 C Si Mn P S Als Sn O N
212 XXX 42 0.056 3.13 0.102 0.014 0.007 0.027 4 0.039 0.000 6 0.007 7
212 XXX 43 0.055 3.20 0.101 0.015 0.006 0.027 2 0.041 0.000 8 0.007 5
212 XXX 44 0.056 3.16 0.094 0.014 0.007 0.029 2 0.040 0.000 8 0.007 1
212 XXX 46 0.055 3.20 0.098 0.013 0.007 0.029 2 0.038 0.000 8 0.007 6
212 XXX 47 0.055 3.23 0.098 0.011 0.006 0.029 4 0.040 0.000 7 0.007 6
212 XXX 49 0.054 3.20 0.100 0.013 0.007 0.028 0 0.041 0.000 4 0.007 3
212 XXX 50 0.057 3.34 0.099 0.012 0.007 0.027 7 0.038 0.000 5 0.008 2
212 XXX 52 0.057 3.26 0.101 0.014 0.006 0.028 3 0.039 0.000 6 0.007 2
212 XXX 53 0.052 3.36 0.100 0.012 0.006 0.027 1 0.040 0.001 4 0.007 8
212 XXX 54 0.052 3.27 0.100 0.010 0.006 0.026 3 0.042 0.000 5 0.007 1
212 XXX 55 0.051 3.19 0.098 0.012 0.005 0.027 1 0.039 0.000 7 0.007 4
212 XXX 57 0.056 3.27 0.104 0.014 0.006 0.028 2 0.040 0.000 6 0.008 2
212 XXX 58 0.054 3.21 0.103 0.015 0.006 0.029 3 0.040 0.000 8 0.007 6
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高磁感取向硅钢炼钢生产实践
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李志成 , 赵鸣 , 徐涛 , 徐少华 , 王俊刚 , 韩浩田 , 刘朋成
包钢科技 | 生产实践与管理 2022,48(2): 5-7
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包钢科技 | 生产实践与管理 2022, 48(2): 5-7
高磁感取向硅钢炼钢生产实践
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李志成, 赵鸣, 徐涛, 徐少华, 王俊刚, 韩浩田, 刘朋成
作者信息
  • 内蒙古包钢稀土钢板材有限责任公司, 内蒙古 包头 014010
  • 李志成(1985-),男,内蒙古包头市人,工程师, 现从事炼钢精炼生产和综合管理工作。

Production Practices on Steelmaking for High Magnetic Induction Oriented Silicon Steel
Zhi-cheng Li, Ming Zhao, Tao Xu, Shao-hua Xu, Jun-gang Wang, Hao-tian Han, Peng-cheng Liu
Affiliations
  • Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2022-04-25
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稀土钢板材公司炼钢区域通过全产线工艺优化,实现了高磁感取向硅钢冶炼过程中精确控制各类成分的目标。其中铸坯全氧质量分数控制在0.000 4%~0.001 5%之间;铝的质量分数控制在0.027 0%~0.030 0%之间;氮的质量分数控制在0.007 1%~0.008 3%之间,使高磁感取向硅钢满足下一步轧制工艺的需要,实现了高磁感取向硅钢批量生产。

取向硅钢  /  生产工艺  /  成分控制

The goal of accurately controlling various components in smelting process of high magnetic induction oriented silicon steel is realized through process optimization of the whole production line in steelmaking area of Rare Earth Steel Plate Co., where the mass fraction of total oxygen in casting blank is controlled at 0.000 4%~0.001 5%; mass fraction of aluminum is controlled at 0.027 0%~0.030 0%; mass fraction of nitrogen is controlled at 0.007 1%~0.008 3% so that the high magnetic induction oriented silicon steel could meet the needs of next step in the rolling process. As a result, its mass production is realized.

oriented silicon steel  /  production process  /  component control
李志成, 赵鸣, 徐涛, 徐少华, 王俊刚, 韩浩田, 刘朋成. 高磁感取向硅钢炼钢生产实践. 包钢科技, 2022 , 48 (2) : 5 -7 .
Zhi-cheng Li, Ming Zhao, Tao Xu, Shao-hua Xu, Jun-gang Wang, Hao-tian Han, Peng-cheng Liu. Production Practices on Steelmaking for High Magnetic Induction Oriented Silicon Steel[J]. Science & Technology of Baotou Steel, 2022 , 48 (2) : 5 -7 .
高磁感取向硅钢(也称Hi-B钢)因具有优异的磁感强度、磁性能以及较低的铁损等优点,常被用于各种大中型电力变压器的制造。近年来,随着电力行业对特高压需求的发展,研究开发高性能的高磁感取向硅钢,对电力变压器满足现在的使用要求和未来发展意义重大[1]
包钢稀土钢板材公司自2020年开始试制高磁感取向硅钢,经过两次小批量生产,突破了炼钢环节多项技术瓶颈,2021年炼钢生产线达到年产高磁感取向硅钢4万t的能力。
稀土钢板材公司装配有KR铁水预处理装置3套,260 t顶底复吹转炉3座,260 t RH真空精炼炉2座,2 250 mm与1 650 mm双流板坯连铸机各1台。冶炼区域主要设备及1 650 mm连铸机技术参数见表1表2
经对国内外取向硅钢生产技术应用的调研及现场装备条件的分析,确定采用低温加热一次冷轧法生产Hi-B钢。该生产工艺成本低,性能好,产品的市场竞争力最强,代表取向硅钢领域当今世界的最高技术水平。采用该生产工艺,需要从炼钢工序开始就对产品成分进行优化处理,其中最重要的是取向硅钢中抑制剂的选用及控制。经过对比分析,最终采用AlN为主抑制剂,同时添加少量的Sn作为辅助抑制剂[2-3]
根据现有生产设备及高磁感取向硅钢成分设计特点,炼钢产线工艺流程设计为铁水预处理(KR脱硫)→转炉冶炼→RH精炼→1 650 mm双流板坯连铸→热装。
在冶炼过程中成分控制难点有三个方面,即钢中硅铁合金加入量大,成分混匀速度慢,铝、氮的变化不稳定,随真空过程进行不断变化,部分成分设计范围窄,要求成分控制精度高。
转炉工序采用铁水与自产废钢冶炼,铁水入炉前经KR预处理,保证入炉铁水$\omega \left[\mathrm{S}\right]$≤0.002%。转炉出钢后每吨钢加入铝铁1.5 kg进行预脱氧,随后加入合金化所需90%以上微碳硅铁进行合金化,同时加入锡锭配锡至目标。
RH真空处理采用以下处理模式进行真空循环。环流气全程采用氮气,流量为260 m3/h。真空处理开始后加入150 kg氮化硅锰合金对钢水进行增氮操作,控制离位氮的质量分数目标范围至0.006 5%~0.007 5%。碳、硅、锰、硫、铝等成分按照目标含量分四次进行调整,保证离位命中成分控制范围。
浇注过程采用全程保护浇注。中间包开浇前用氩气吹扫,并在中间包中充氩,避免了开浇过程钢水与空气的接触。板坯宽度1 260 mm,浇注过程保证恒拉速,拉速稳定在0.9 m/min。
按照上述冶炼方案,冶炼某浇次高磁感取向硅钢共13炉。
该浇次13炉取向硅钢成品成分见表3。经过检验,该浇次13炉取向硅钢成分全部命中控制范围。
现工艺过程氮含量控制主要通过RH炉环流氮气,配以部分氮化硅锰合金增氮,在真空环境中进行钢液循环,利用真空度变化控制氮在钢水中的含量,达到稳定控氮的目的。浇次中间包氮含量平均值为0.007 6%,标准差为0.000 345。工序氮含量变化情况见图1
RH精炼炉在冶炼过程中四次调整铝含量,使过程铝含量稳定在0.033 0%左右,保证离位铝含量精确控制在0.030%~0.031%,铸机浇注平均铝损为0.002 6%,铝命中率稳定。其中浇次第一炉铝损达到0.005 4%,RH离位适当提高铝含量约0.002个百分点,稳定控制开浇对成分命中的影响。工序铝含量变化情况见图2
根据该批次取向硅钢铸坯全氧检验结果,铸坯全氧质量分数控制在0.000 4%~0.001 4%,平均0.000 8%。整体铸坯全氧含量控制较好,钢质洁净度高[4]。该批次中间包氧含量控制情况见图3
(1)通过优化高磁感取向硅钢转炉、RH炉、铸机全产线工艺,稀土钢板材公司实现了高磁感取向硅钢13炉次稳定连浇,铸坯化学成分稳定,性能良好,满足下游工序轧制需求。
(2)通过RH炉环流全程采用氮气,同时利用真空环境控制钢水氮含量,钢中氮含量可以控制在0.007 0%~0.008 3%之间,满足取向硅钢AlN形成所需条件。
(3)通过RH工序四次微调成分,可以精确调整冶炼过程中钢水多种成分含量在较窄范围内,满足成分设计要求。
参考文献 引证文献
排序方式:
[1]
杨明波, 谭磊, 李上民. 高磁感取向硅钢研究开发的关键工艺及其研究进展[J]. 重庆理工大学大学学报(自然科学版), 2021, 35(4):1-3.
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陈天颖, 刘静, 程朝阳, 等. 无取向硅钢RH精炼过程中夹杂物行为研究[J]. 武汉科技大学学报(自然科学版), 2019, 42(1):1-7.
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卢晓禹, 王少炳, 黄利, 等. 取向硅钢热轧钢带BTQ001研制与开发[J]. 特殊钢, 2020, 41(5):38-41.
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杨丽, 孙雅平. 薄板连铸连轧生产取向硅钢100HD的试制研究[J]. 电工钢, 2021, 3(3):17-20.
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  • 接收时间:2022-02-10
  • 首发时间:2025-10-21
  • 出版时间:2022-04-25
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2种不同金属材料的力学参数

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Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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