D01:10.13374.isml00103x.2009.04.0I2 第31卷第4期 北京科技大学学报 Vol.31 No.4 2009年4月 Journal of University of Science and Technology Beijing Apr.2009 板坯加热温度对低温技术取向电工钢抑制剂与磁性的 影响 夏兆所2” 康永林》倪献娟2 周谊军2)王全礼2) 1)北京科技大学新金属材料国家重点实验室。北京1000832)首钢总公司技术研究院，北京100041 摘要利用透射电镜研究了采用“固有抑制剂法”低温板坯加热技术生产的取向电工钢热轧板中抑制剂的析出行为，探讨 了板坯加热温度对二次再结晶和成品磁性的影响.结果表明：热轧板中析出相以复合硫化物为主：随着板坯加热温度的提高。 复合硫化物中铜锰比增高。析出相尺寸减小，分布更均匀，同时AN析出增多，使得抑制力更强。二次再结晶更完善，磁性更 好 关键词取向电工钢：抑制剂：磁性；析出相 分类号TG142.7 Influence of slab reheating temperature on inhibitors and magnetic properties of grain-oriented electrical steel produced by low slab reheating temperature tech- niques XIA Zhao-suo2.K ANG Yong-lin.NI Xian-juan2).ZHOU Yi-jun2.WANG Quan-li2) 1)State Key Laboratory for Advanced M etals and Materiak University of Science and Techndlogy Beijing.Beijing 100083.China 2)Research Institute of Technology.Shougang Group Beijing 100041.China ABSTRACT The behavior of precipitation in hot bands of grairroriented electrical steel pduced by the inherent inhibitor method w as investigated by means of transmission elecron microscopy (TEM).The effects of slab reheating temperature on secondary recrys- tallization and magnetic properties after secondary recrystallization annealing were discussed.Experimental results show that most of the particles in hot bands are complex ooppermanganese sulphides.As the slab reheating temperature increases an increase of Cu Mn ratio in the sulphide partides is associated with a simultaneous decrease in size,the dispersive particles become more homogeneous and more AlN pecipitates.Consequently,the inhibiting effect on primary grain grow th is enhanced the secondary recrystallization is more complete and the magnetic properties are improved. KEY WORDS grairroriented electrical steek inhibitor:magnetic properties:precipitate 取向电工钢由于沿轧向形成了强的(110}〈001) 取决于能够阻碍初次再结晶晶粒长大的抑制剂的析 织构，具有优良的磁性能，是一种主要用于变压器铁 出状态. 芯的功能材料.研究发现二次再结晶是形成{110) 在传统的取向电工钢生产中，人们一般以MS (O01〉有利织构的根本原因.二次再结晶发生的前 与AN为抑制剂.由于其固溶温度高，必须将板坯 提条件是，由于第2相颗粒的抑制或强的初次再结 加热到近1400℃，以使粗化了的硫化物与氮化物完 晶织构的出现使得初次再结晶晶粒细小.商业生 全再固溶：在随后的热轧或热轧板退火阶段，使其以 产中，均采用抑制初次再结晶晶粒长大的方式实现 细小弥散状态析出，并保持到二次再结晶开始。该 二次再结晶，而理想的{110}001)织构的获得主要 工艺的缺点在于：(1)板坯与空气反应生成1300℃ 收稿日期：200805-07 作者简介：夏兆所(1966一，男.博士研究生：康永林(1954一).男.教授.博士生导师Emal:kangylin@mtcr.ust山.du.m板坯加热温度对低温技术取向电工钢抑制剂与磁性的 影响 夏兆所 1 , 2) 康永林 1) 倪献娟 2) 周谊军 2) 王全礼 2) 1)北京科技大学新金属材料国家重点实验室, 北京 100083 2)首钢总公司技术研究院, 北京 100041 摘 要 利用透射电镜研究了采用“固有抑制剂法” 低温板坯加热技术生产的取向电工钢热轧板中抑制剂的析出行为, 探讨 了板坯加热温度对二次再结晶和成品磁性的影响.结果表明:热轧板中析出相以复合硫化物为主;随着板坯加热温度的提高, 复合硫化物中铜锰比增高, 析出相尺寸减小, 分布更均匀, 同时 AlN 析出增多, 使得抑制力更强, 二次再结晶更完善, 磁性更 好. 关键词 取向电工钢;抑制剂;磁性;析出相 分类号 TG142.7 Influence of slab reheating temperature on inhibitors and magnetic properties of grain-oriented electrical steel produced by low slab reheating temperature tech￾niques X IA Zhao-suo 1 , 2), K ANG Yong-lin 1), NI Xian-juan 2), ZHOU Yi-jun 2), WANG Quan-li 2) 1)St at e Key Laborat ory for Advanced M etals and Materials, University of S cience and Technology Beijing , Beijing 100083 , China 2)Research Institut e of Technology , S hougang Group, Beijing 100041 , C hina ABSTRACT The behavior of precipitation in hot bands of grain-oriented electrical steel pro duced by the inherent inhibito r method w asinvestigated by means of transmission electron microscopy (TEM).The effects of slab reheating temperature o n secondary recry s￾tallization and magnetic properties after secondary recrystalliza tio n annealing were discussed.Experimental results show that most of the particlesin ho t bands are complex copper-manganese sulphides.As the slab reheating temperature increases, an increase of Cu/ Mn ratio in the sulphide particles is associated with a simultaneous decrease in size , the dispersive particles become mo re homog eneous and mo re AlN precipitates.Consequently , the inhibiting effect on primary g rain grow th is enhanced, the secondary recry stallization is mo re complete and the mag netic properties are improved. KEY WORDS g rain-oriented electrical steel;inhibitor;mag netic properties ;precipitate 收稿日期:2008-05-07 作者简介:夏兆所(1966—), 男, 博士研究生;康永林(1954—), 男, 教授, 博士生导师, E-mail:kangylin@mat er .ustb.edu.cn 取向电工钢由于沿轧向形成了强的{110}〈001〉 织构 ,具有优良的磁性能 ,是一种主要用于变压器铁 芯的功能材料.研究发现,二次再结晶是形成{110} 〈001〉有利织构的根本原因 .二次再结晶发生的前 提条件是,由于第 2 相颗粒的抑制或强的初次再结 晶织构的出现, 使得初次再结晶晶粒细小.商业生 产中, 均采用抑制初次再结晶晶粒长大的方式实现 二次再结晶 ,而理想的{110}〈001〉织构的获得主要 取决于能够阻碍初次再结晶晶粒长大的抑制剂的析 出状态 . 在传统的取向电工钢生产中, 人们一般以 M nS 与AlN 为抑制剂.由于其固溶温度高, 必须将板坯 加热到近1 400 ℃,以使粗化了的硫化物与氮化物完 全再固溶;在随后的热轧或热轧板退火阶段,使其以 细小弥散状态析出 , 并保持到二次再结晶开始 .该 工艺的缺点在于:(1)板坯与空气反应生成 1 300 ℃ 第 31 卷 第 4 期 2009 年 4 月 北 京 科 技 大 学 学 报 Journal of University of Science and Technology Beijing Vol .31 No.4 Apr.2009 DOI :10.13374/j .issn1001 -053x.2009.04.012