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In the paper, the effects of mold electromagnetic stirring, dynamic secondary cooling water distribution and dynamic soft reduction on the central carbon segregation index, porosity and solidification structure of ingot blank are analyzed by comparing the internal and external quality for ingot blank of heavy rail steel with bloom section produced by 7#continuous caster after transformation. As a result, the internal quality for ingot blank of heavy rail steel with two bloom sections produced by 7# continuous caster is fine with reasonable casting speed matched with degree of superheat and the technology of mold electromagnetic stirring + soft reduction. The equiaxed crystal ratio of ingot blank is 52.3%~58.3% and its central carbon segregation index can be controlled below 1.07.

, authors=Bao-cang Meng, Huai-jun Zhang, Jian-xin Chen, authorsList=Bao-cang Meng, Huai-jun Zhang, Jian-xin Chen, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319265253439943621, articleId=1319265253062456259, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=7#铸机大方坯断面生产重轨钢铸坯质量评价, columnId=1319263253117653924, journalTitle=包钢科技, columnName=品种质量与实验研究, runingTitle=null, highlight=null, articleAbstract=

文章通过对7#铸机设备改造后生产的大方坯断面重轨钢坯内外部质量对比,分析了结晶器电磁搅拌、动态二冷配水、动态轻压下对铸坯的中心碳偏析指数、疏松及铸坯凝固组织的影响,得出7#铸机两个大方坯断面重轨钢在合理拉速、过热度匹配下,采用结晶器电磁搅拌+轻压下工艺后,铸坯内部质量良好,不仅使铸坯等轴晶比率为52.3%~58.3%,也可使铸坯中心碳偏析指数控制在1.07以下。

, authors=孟保仓, 张怀军, 陈建新, authorsList=孟保仓, 张怀军, 陈建新, authorCompany=null, correspAuthors=null, authorNote=

孟保仓(1982-),男,山西省怀仁县人,硕士,工程师,现从事炼钢工艺质量研究工作。

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孟保仓(1982-),男,山西省怀仁县人,硕士,工程师,现从事炼钢工艺质量研究工作。

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孟保仓(1982-),男,山西省怀仁县人,硕士,工程师,现从事炼钢工艺质量研究工作。

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7#铸机大方坯断面生产重轨钢铸坯质量评价
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孟保仓 , 张怀军 , 陈建新
包钢科技 | 品种质量与实验研究 2018,44(3): 39-42
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包钢科技 |品种质量与实验研究 2018 , 44 (3) : 39 -42
7#铸机大方坯断面生产重轨钢铸坯质量评价
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孟保仓, 张怀军, 陈建新
作者信息
  • 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
作者简介:

孟保仓(1982-),男,山西省怀仁县人,硕士,工程师,现从事炼钢工艺质量研究工作。

Quality Evaluation on Ingot Blank of Heavy Rail Steel with Bloom Section Produced by 7# Continuous Caster
Bao-cang Meng, Huai-jun Zhang, Jian-xin Chen
Affiliations
  • Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
出版时间: 2018-06-25 doi: 10.13647/j.cnki.btgkj.2018.03.010
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文章通过对7#铸机设备改造后生产的大方坯断面重轨钢坯内外部质量对比,分析了结晶器电磁搅拌、动态二冷配水、动态轻压下对铸坯的中心碳偏析指数、疏松及铸坯凝固组织的影响,得出7#铸机两个大方坯断面重轨钢在合理拉速、过热度匹配下,采用结晶器电磁搅拌+轻压下工艺后,铸坯内部质量良好,不仅使铸坯等轴晶比率为52.3%~58.3%,也可使铸坯中心碳偏析指数控制在1.07以下。

重轨钢  /  结晶器电磁搅拌  /  等轴晶比率  /  中心碳偏析指数

In the paper, the effects of mold electromagnetic stirring, dynamic secondary cooling water distribution and dynamic soft reduction on the central carbon segregation index, porosity and solidification structure of ingot blank are analyzed by comparing the internal and external quality for ingot blank of heavy rail steel with bloom section produced by 7#continuous caster after transformation. As a result, the internal quality for ingot blank of heavy rail steel with two bloom sections produced by 7# continuous caster is fine with reasonable casting speed matched with degree of superheat and the technology of mold electromagnetic stirring + soft reduction. The equiaxed crystal ratio of ingot blank is 52.3%~58.3% and its central carbon segregation index can be controlled below 1.07.

heavy rail steel  /  mold electromagnetic stirring  /  equiaxed crystal ratio  /  central carbon segregation index
孟保仓, 张怀军, 陈建新. 7#铸机大方坯断面生产重轨钢铸坯质量评价. 包钢科技, 2018 , 44 (3) : 39 -42 . DOI: 10.13647/j.cnki.btgkj.2018.03.010
Bao-cang Meng, Huai-jun Zhang, Jian-xin Chen. Quality Evaluation on Ingot Blank of Heavy Rail Steel with Bloom Section Produced by 7# Continuous Caster[J]. Science & Technology of Baotou Steel, 2018 , 44 (3) : 39 -42 . DOI: 10.13647/j.cnki.btgkj.2018.03.010
  • 国家重点研发计划资助项目(2017YFB0304500)
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doi: 10.13647/j.cnki.btgkj.2018.03.010
  • 接收时间:2018-02-23
  • 首发时间:2026-10-20
  • 出版时间:2018-06-25
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  • 收稿日期:2018-02-23
基金
国家重点研发计划资助项目(2017YFB0304500)
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    内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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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