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Edge crack defects occur frequently during the hot rolling process of low-temperature oriented silicon steel, and remain one of the primary quality problems in hot-rolled coils of oriented silicon steel. Through methods such as microstructure observation, energy spectrum analysis, and thermal simulation experiments, the cause of edge crack formation was identified as decarbonization and coarsening of ferritic grain boundaries during prolonged high-temperature heating of the slab. During rolling, grain refinement through the γ→α phase transformation was impeded, and recrystallization was suppressed by low edge temperatures. The resulting coarse and elongated non-recrystallized microstructure exhibited high brittleness, and tearing during rolling led to the formation of microcracks, which further propagated into edge cracks in the finishing stage. By adopting optimized heating and rolling strategies such as seamless charging, lower heating temperature, shorter heating time, high reduction rough rolling, fewer-pass rapid rolling, heavy vertical edge rolling, and edge heater temperature compensation, the edge quality qualification rate of hot-rolled oriented silicon steel coils increased from 76.3% to 85.2%,

, authors=He JING1, Wei LIU1, Peng LIU1, Lei GAO2, Zuncheng WANG2, Zheyi YANG2, Shuai WANG2, authorsList=He JING, Wei LIU, Peng LIU, Lei GAO, Zuncheng WANG, Zheyi YANG, Shuai WANG, 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=1321826933252403629, articleId=1321826930303807912, tenantId=1146029695717560320, journalId=1268266715432370238, language=CN, title=低温取向硅钢边部裂口缺陷成因分析与改善, columnId=1268934136837345849, journalTitle=鞍钢技术, columnName=生产实践, runingTitle=null, highlight=null, articleAbstract=

低温取向硅钢热轧过程中频发的边裂缺陷仍是取向硅钢热轧卷的主要质量问题之一。通过微观组织观察、能谱分析、热模拟试验等手段,确定边裂形成原因为铸坯在较高温度下长时间加热,铁素体晶粒晶界脱碳、粗化,在轧制过程中,由γ→α相变引起的晶粒细化作用受到阻碍,且边部温度低抑制了再结晶的发生,所形成的粗大、长条形的未再结晶组织脆性大,轧制过程中撕裂导致微裂纹的形成,并在精轧轧制中进一步扩展成边部裂纹。通过采取无间隙装钢、降低加热温度、缩短加热时间、大压下量粗轧和少道次快速轧制、立辊大侧压量轧制、边部加热器温度补偿等加热和轧制工艺优化措施,取向硅钢热轧卷边部质量合格率由原来的76.3%提高到85.2%。

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景鹤,高级工程师,2010年毕业于北京科技大学材料成型及控制工程专业。E-mail:

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低温取向硅钢边部裂口缺陷成因分析与改善
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景鹤 1 , 刘威 1 , 刘鹏 1 , 高磊 2 , 王尊呈 2 , 杨哲懿 2 , 王帅 2
鞍钢技术 | 生产实践 2026,(5): 60-66
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鞍钢技术 |生产实践 2026 , (5) : 60 -66
低温取向硅钢边部裂口缺陷成因分析与改善
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景鹤1 , 刘威1, 刘鹏1, 高磊2, 王尊呈2, 杨哲懿2, 王帅2
作者信息
  • 1.鞍钢股份有限公司热轧带钢厂,辽宁 鞍山 114021
  • 2.鞍钢集团钢铁研究院,辽宁 鞍山 114009
作者简介:

景鹤,高级工程师,2010年毕业于北京科技大学材料成型及控制工程专业。E-mail:

Analysis and Improvement of Edge Crack Defects in Low-temperature Oriented Silicon Steel
He JING1 , Wei LIU1, Peng LIU1, Lei GAO2, Zuncheng WANG2, Zheyi YANG2, Shuai WANG2
Affiliations
  • 1.Hot Rolled Strip Steel Mill of Angang Steel Co., Ltd., Anshan 114021, Liaoning, China
  • 2.Ansteel Iron & Steel Research Institutes, Anshan 114009, Liaoning, China
出版时间: 2026-10-10 doi: 10.3969/j.issn.1006-4613.2026.05.010
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低温取向硅钢热轧过程中频发的边裂缺陷仍是取向硅钢热轧卷的主要质量问题之一。通过微观组织观察、能谱分析、热模拟试验等手段,确定边裂形成原因为铸坯在较高温度下长时间加热,铁素体晶粒晶界脱碳、粗化,在轧制过程中,由γ→α相变引起的晶粒细化作用受到阻碍,且边部温度低抑制了再结晶的发生,所形成的粗大、长条形的未再结晶组织脆性大,轧制过程中撕裂导致微裂纹的形成,并在精轧轧制中进一步扩展成边部裂纹。通过采取无间隙装钢、降低加热温度、缩短加热时间、大压下量粗轧和少道次快速轧制、立辊大侧压量轧制、边部加热器温度补偿等加热和轧制工艺优化措施,取向硅钢热轧卷边部质量合格率由原来的76.3%提高到85.2%。

低温取向硅钢  /  边裂  /  再结晶  /  边部加热器

Edge crack defects occur frequently during the hot rolling process of low-temperature oriented silicon steel, and remain one of the primary quality problems in hot-rolled coils of oriented silicon steel. Through methods such as microstructure observation, energy spectrum analysis, and thermal simulation experiments, the cause of edge crack formation was identified as decarbonization and coarsening of ferritic grain boundaries during prolonged high-temperature heating of the slab. During rolling, grain refinement through the γ→α phase transformation was impeded, and recrystallization was suppressed by low edge temperatures. The resulting coarse and elongated non-recrystallized microstructure exhibited high brittleness, and tearing during rolling led to the formation of microcracks, which further propagated into edge cracks in the finishing stage. By adopting optimized heating and rolling strategies such as seamless charging, lower heating temperature, shorter heating time, high reduction rough rolling, fewer-pass rapid rolling, heavy vertical edge rolling, and edge heater temperature compensation, the edge quality qualification rate of hot-rolled oriented silicon steel coils increased from 76.3% to 85.2%,

low-temperature oriented silicon steel  /  edge crack  /  recrystallization  /  edge heater
景鹤, 刘威, 刘鹏, 高磊, 王尊呈, 杨哲懿, 王帅. 低温取向硅钢边部裂口缺陷成因分析与改善. 鞍钢技术, 2026 , (5) : 60 -66 . DOI: 10.3969/j.issn.1006-4613.2026.05.010
He JING, Wei LIU, Peng LIU, Lei GAO, Zuncheng WANG, Zheyi YANG, Shuai WANG. Analysis and Improvement of Edge Crack Defects in Low-temperature Oriented Silicon Steel[J]. Angang Technology, 2026 , (5) : 60 -66 . DOI: 10.3969/j.issn.1006-4613.2026.05.010

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2026年第卷第5期
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doi: 10.3969/j.issn.1006-4613.2026.05.010
  • 首发时间:2026-10-27
  • 出版时间:2026-10-10
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  • 修回日期:2024-09-12
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    1.鞍钢股份有限公司热轧带钢厂,辽宁 鞍山 114021
    2.鞍钢集团钢铁研究院,辽宁 鞍山 114009
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2种不同金属材料的力学参数
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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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