硅钢资料

介绍了国内、外电工钢极薄带的生产现状及市场应用的情况,以及典型生产企业的生产规模、产品性能和应用领域,指出扩大高牌号无取向电工钢生产、提高产品质量是目前电工钢发展的迫切要求。 The production situation and market application of ultra thin electrical steel strip at home and abroad were described.The production capability,product property and application area of typical corporation were introduced.The results indicate that the urgency needed of electrical steel development is expanding high-grade non-oriented electrical steel production and improving products quality at present. 

一种含Bi高磁感取向硅钢热轧带钢边部质量控制方法：炼钢；连铸；铸坯加热；粗轧，粗轧道次不低于4道次，各道次压下率控制在20~33%；规精轧及进行后工序。本发明通过对热轧工序的控制，能使热轧带钢边部开裂的尺寸降低至不超过5mm，且边部开裂≤2mm比率能达到95%以上，后工序切边量很少甚至无需切边即可进行冷轧，使产品成材率能比现有技术提高2~4%；且由于铸坯加热温度的降低使能耗也随之降低。

本发明公开了一种精确控制高磁感取向硅钢板坯Als含量的方法，转炉出钢20～40秒时，定量加入金属铝，加入量按0.15～0.35kg/吨钢；转炉出钢及合金加入后，底吹搅拌均匀3～5min后，加入一定量金属铝后再底吹搅拌均匀3～5min后将钢水吊运至RH开始精炼处理，铝加入量按[WAls目标+(0.009～0.0120％)]范围控制；钢水在RH精炼过程经过2～3次酸溶铝的成分微调后结束精炼，精炼结束Als按[WAls目标+(0.0030～0.0045％)]目标范围控制；RH精炼结束样酸溶铝检测结果出来后，在连铸开浇前，在钢包内补加铝线使钢液中Als在[WAls目标+Δ浇注Als损]目标范围内；连铸进行氩气环流保护浇注，其中氩气环流流量控制在6～12m3/h；浇注成合格板坯后按正常工艺进行热轧及后工序生产。

硅钢工业退火炉温度控制具有强耦合、纯滞后、多扰动等特点,它的控制方法代表着一类非线性系统控制的解决方法。以硅钢工业退火炉温度为控制对象,在双交叉限幅控制的基础上引入了智能学习系统,形成了基于智能学习系统的双交叉限幅控制方法来解决此类非线性系统的控制问题,并通过模块化的编程来实现其功能。结果表明:与传统的PID控制相比,该控制方法的控制精度、抗扰性等控制指标有明显提高,是解决此类非线性控制的一种有效方法。 The temperature control of silicon steel industrial annealing furnace has the features of strong coupling,pure lag,multidisturbance. The control method represents the solution of a class of nonlinear control systems. The control object is the temperature control of silicon steel industrial an-nealing furnace, the intelligent learning system based on Double Across Limit Control is introducedand used to solve control problem of this kind of nonlinear system, and the module programming isused to re... 

【作者】 谌剑； ...

利用X-射线衍射织构分析和线形分析技术测定了交叉轧制双取向硅钢在制备工艺各阶段的织构及微结构,进而探讨了立方织构({100}<001>)的形成过程。通过对实验结果的分析可知,二次冷轧和交叉轧制工艺为立方织构提供了内能优势和有利的形变织构,而低温预退火工艺既强化了立方织构的内能优势,又为立方织构的异常长大提供了有利的组织保证,最终在抑制剂(AlN和MnS)的协同作用下,硅钢在二次再结晶退火后形成了强烈的立方织构。 The texture and substructure of the double oriented electrical steels produced by the cross rolling technology during the difference process has been measured by means of the X-ray texture and diffraction peak profile analysis technology,and research the formation mechanism of cube texture,{100}<001>.The results show that the dominances of inner energy and deformation texture were supplied by secondary cold rolling and the cross rolling technology and strengthened by pre-annealing at a low... 

电动汽车电机在高速旋转时承受离心力和电磁力的作用,在进行电机转子设计时,既要考虑电磁性能,还要考虑机械性能。对电机转子受力情况进行了综述,分析了转子用电工钢疲劳性能参数的重要性,详细阐述了试样抛光、表面处理、试样的对中和安装对测试结果的影响。 The motor of electric vehicle bears big force for high speed rotors,mainly including centrifugal and electromagnetic forces.The magnetic and mechanical aspects of the electrical steel are crucial to machine design.In this paper,the forces applied on the motor were summarized and importance of fatigue properties was analyzed.The influence of specimen polish,surface treatment,alignment and installation on fatigue testing result were represented in detail. 

本发明公开了一种改善取向硅钢内外圈和边部表面质量的方法及环形炉，在一次冷轧工序中，采用错边卷曲，卷曲张力按渐变张力进行控制且头尾的卷曲张力大、中部的卷曲张力小，MgO的涂覆量与卷曲张力同步变化且头尾的涂覆量少、中部的涂覆量多；在高温退火工序中，环形炉的底板上增设一层由若干扇形块绕中心均布形成的垫层，相邻扇形块之间存在空隙，环形炉的内罩内钢卷的上端加盖通风式的盖板，盖板底面的内圈间隙伸入钢卷孔、外圈间隙套在钢卷上、中间通过绕中心均布的导流槽支撑在钢卷端面上，导流槽呈螺旋状且入口与盖板内圈上的开口一一对应连通、出口延伸至盖板底面外圈内侧。本发明可显著减少表面缺陷，明显改善表面质量和磁性，操作容易。

本发明涉及取向硅钢制造技术领域，公开了一种快速判断取向硅钢初次再结晶晶粒直径的方法，包括如下步骤：选取取向硅钢热轧来料，进行生产，对产出的钢板在同部位各取若干个拉伸试样，加工拉伸和分析，取得屈服强度，在拉伸试样部位两侧连续制取金相试样，计算对应拉伸试样的平均晶粒直径D，将性能数据和平均晶粒直径进行统计分析，建立屈服强度与晶粒直径的对应关系，实际生产时，在产出的钢板上取判断试样，取得判断试样的屈服强度，进而取得判断试样的晶粒直径。本发明快速判断取向硅钢初次再结晶晶粒直径的方法，通过机械性能检验，来间接指示初次晶粒的大小，检测速度快，评价更准确。

对w(Si)=3%无取向硅钢进行表面机械研磨处理(SMAT)和异步轧制(CSR),获得表面纳米结构,再进行550～650℃、4 h固体粉末渗硅处理,用透射电镜(TEM)、扫描电镜(SEM)和X射线衍射仪(XRD)研究表层组织演变。结果表明:经过SMAT后,w(Si)=3%无取向硅钢表面形成了等轴状、取向呈随机分布的、晶粒尺寸为10 nm的纳米晶组织;异步轧制后,表面纳米晶组织保持不变;550～650℃、4 h渗硅处理后,SMAT+CSR样品表面形成化合物层,其厚度随着温度的升高由17μm增加到52μm;化合物层由Fe3Si和FeSi相组成. Nanostructured surface layer was fabricated on a 3%(mass fraction) non-grain oriented silicon steel by means of surface mechanical attrition treatment(SMAT) and cross-shear rolling(CSR),and then a solid powder siliconizing treatment was carried out for the SMAT+CSR sample at 550~650 ℃ for 4 h.The microstructural evolution was examined by using transmission electron microscopy(TEM),scanning electron microscopy(SEM) and X-ray diffraction(XRD).Experimental results show that: equiaxed nanocrystallin... 

【作者】 王爱华； ...

分析了电感耦合等离子体发射光谱法(ICP-AES)测定硅钢中铌的检测过程,讨论了该检测过程中不确定度的主要来源,建立了该方法的定量的数学模型,并根据这一模型计算出了检测结果的合成标准不确定度和扩展不确定度。 The measurement of niobium content in silicon steel by inductively coupled plasma atomic emission spectrometry(ICP-AES) was analyzed,by which the main factors affecting the uncertainty of the measurement were ascertained and the calculation formula was given.Finally,according to the formula the combined uncertainty and expanded uncertainty were obtained.