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取向硅钢热轧板中组织、织构梯度对发展完善的二次再结晶十分关键,通过对2种不同热轧工艺生产取向硅钢的组织、织构进行研究,结果表明:采用后道次大压下热轧工艺时热轧板表层再结区晶粒平均尺寸增加,再结晶区厚度增加,高温退火后二次晶粒尺寸减小;采用后道次大压下热轧工艺热轧时,热轧板中平均等效应变高,热轧板厚度心部{100}〈011〉和{100}〈001〉位向取向强度降低,({111}~{113})〈110〉位向取向强度提高,高温退火后{110}〈001〉位向偏离角降低,磁性能提高。 The texture and microstructure gradient in hot rolled grain oriented silicon steel strip was one of the essential factors to achieve a perfect secondary recrystallization.The texture and microstructure of grain oriented silicon steel strip as-rolled with two different hot rolling parameters was investigated.The results show that with big reduction at the end rolling process,the intensity of {100}〈011〉 and {100}〈001〉 orientation reduces with({111}-{113})〈110〉 orientation intensity enhanced in hot... 
2012-12-28 149 5.8

利用场发射电镜及能谱仪研究了取向电工钢薄、厚板坯铸锭中不同区域的析出相差异,确定了MnS、AlN及Fe3C的析出顺序和形貌特征。结果表明AlN以先析出的MnS为形核核心,形成粗大微米级的复合析出相。针状Fe3C既可以在复合析出相表面形成也可以在基体中单独出现,主要受冷却速度的影响。在1250℃保温1~2 h,AlN、Fe3C均可完全回溶,但部分MnS仍不回溶。MnS尺寸随着保温时间延长而增大。导致热轧板中沿轧向分布的粗大MnS,减弱了粒子钉扎力。 Precipitates in thin and thick slabs of electrical silicon steel were investigated by means of field emission SEM and EDS analysis.The precipitation sequence and the morphology of MnS,AlN and Fe3C particles were identified.AlN particles are observed to be nucleated on surface of MnS forming micron-meter-sized complex particles.Acicular Fe3C can precipitate on surface of the complex MnS/AlN particles or directly from matrix depending on cooling rate of the slabs.After holding at 1250 ℃ for 1-2 h,... 
2011-08-28 136 5.8

本发明涉及一种防止低温加热取向硅钢热轧边裂的方法,包括:1)控制取向硅钢铸坯进入加热炉前的表面温度;2)控制加热段各段炉气温度;3)二加热段采用加速加热;4)控制总加热时间;5)控制出炉温度;6)控制精轧道次及侧压量;7)控制精轧道次及终轧温度;8)精轧前对钢带边部进行加热补偿。本发明通过合理制定取向硅钢的加热温度、加热时间和轧制工艺制度,避免或消除了低温加热取向硅钢热轧边裂问题。
2021-03-18 151 6.8

对高牌号无取向电工钢35W300的成品进行了第二次退火,对第二次退火后的成品性能、纵横向磁性能差异和组织变化进行了分析。结果表明,随着第二次退火温度的升高,晶粒长大,磁性能优化。铁损平均值下降0.087 5W/kg,磁感平均值升高0.008T。第二次退火温度为820℃的产品的磁性能能够满足用户使用要求。 The product of high grade non-oriented electrical steel 35W300 was annealed at the second time.Microstructure,the difference of magnetic properties in the vertical and horizontal and were studied.The results show that the grain grew up and magnetic properties optimized with the increase of annealing temperature for the second time.Iron loss average declines in 0.0875 W/kg,magnetic induction average increases 0.008 T.The magnetic properties can meet the requirements of users at the second anneali... 
2013-04-28 153 5.8

本发明涉及电磁钢板技术领域,尤其涉及一种免涂层高碳高强耐蚀电磁钢板及其生产方法。所述电磁钢板按重量百分比计,包括如下组分:C为0.010%~0.150%,Si为1.30%~2.50%,Mn为0.50%~1.50%,P为0.04%~0.15%,S≤0.015%,Cr为0.10%~1.50%,Cu为0.2%~0.6%,Al为0.10%~1.50%,Sn为0.02%~0.10%,Ni≤0.0050%,Nb≤0.0050%,Ti≤0.0050%,N≤0.0050%,V≤0.0050%,其余为Fe和不可控残余元素。所述钢板生产方法包括如下步骤:1)板坯浇铸;2)板坯连轧及卷曲;3)热轧卷酸洗及冷轧;4)罩式退火;5)钢卷矫直或拉矫。本发明所生产专用产品在电磁性能相近情况下,强度进一步提升、耐蚀性能提高、生产流程缩短、生产难度下降,减少了涂层工序,降低了生产成本,同时不同盐雾试验锈蚀减少85%以上。
2021-01-06 133 6.8

本发明提供一种改善表面麻点缺陷的薄规格中低牌号无取向硅钢及其生产方法,成分C≤0.0025%,1.2≤Si≤1.65%,0.25%≤Mn≤0.35%,0.06%≤P≤0.11%,0.1%≤Als≤0.2%,S≤0.0025%、N≤0.0025%,Ti≤0.0025%,其余为Fe及不可避免的杂质。与现有技术相比,本发明采用较低氢气浓度,防止炉内氧化铁皮还原,减轻碳套辊的腐蚀程度,减少碳套辊结瘤率,改善带钢表面质量;采用合理合金成分设计,提高带钢的力学强度,降低碳套辊结瘤对带钢表面的影响程度,改善带钢表面质量。产品厚度为0.35mm,板面麻点发生率降低,无手感,且辊身周长周期范围内麻点个数≤5个。
2021-10-14 157 6.8

对冷轧无取向硅钢在冶炼过程中各个工序的顶渣进行了检测,分析了顶渣变化原因,并得出结论:硅钢生产宜采用复吹转炉,以降低吹炼终点渣中TFe含量,进而减轻对精炼的压力;使用低S、低Al2O3含量中间包覆盖剂;RH脱氧及合金化顺序采用先加硅铁后加铝;首罐宜经LF提温并降低渣中TFe。 The top-surface slag used for the various production processes in smelting coldrolled non-oriented electrical steel is tested and based on tested results the cause of the top surface slag change is analyzed.So it is concluded that the combined blown converter is more suitable to be used for smelting electrical steel in order to reduce the content of TFe in slag at blow end point and then much better results can be achieved during the period of refining.Secondly the tundish flux contenting low co... 
2013-03-28 140 5.8

本发明提供了一种CSP流程生产高效冷轧无取向电工钢及生产方法,成分:C≤0.0030%、Si 1.00‑1.70%、Als≤0.0050%、Mn 0.10‑0.30%、Sn0.01‑0.3%、P≤0.050%、S≤0.0080%、N≤0.0030%、Nb≤0.0030%、V≤0.0030%、Ti≤0.0030%,其余为Fe以及不可避免的杂质。与现有技术相比,本发明CSP流程生产高效冷轧无取向电工钢的方法,通过控制钢中的化学成分,并采用合适的生产工艺,实现了表面质量优良,低铁损、高磁感、低制造成本且生产高效。
2021-10-11 181 6.8

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