硅钢资料

通过热力学计算,分析了实验钢中主要析出物析出的可能性。结果表明:在液相和固液两相区中,AlN和MnS均不能析出;在奥氏体区,AlN和MnS具备热力学析出条件,平衡析出温度分别为1547、1582 K。成品退火板中的析出物主要为AlN和MnS。扫描电镜下观察到的AlN形貌多为长条状,MnS形貌多为棒状或近似球形。这两种析出物占了析出物总量的85%以上,尺寸集中分布在400~800nm;复合析出物主要是(Al2O3+MnS)和(AlN+MnS),形貌不规则,尺寸集中在0.7~1.5μm;透射电镜下观察到了少量100nm以下独立的AlN析出。 According to thermodynamic calculation, the precipitation probability of precipitates was analyzed, AlN and MnS can not precipitate in liquid phase area and solid-liquid two-phase area. In austenite area, both the AlN and MnS have precipitation condition in thermodynamics and precipitates at 1547 K and 1582 K, respectively. The precipitates in annealing plate are mainly AlN and MnS. The shape of AlN is mostly strip, and MnS is stick or near sphericity. They accounted for over 85% of the total qu... 

磁性能指标是硅钢产品最关键的质量指标之一，但是目前磁性能判定100%依赖于样品的离线实验室检测结果，生产线配置的在线检测仪的测量结果由于精度问题，不宜直接用于成品牌号判级。本文在现有硅钢产品质量管控体系基础上，利用大数据技术对生产数据进行分析与建模，构建不同磁性能指标在线检测模型，并在现有信息系统上完成模型库的集成部署，实现硅钢产品全长、多指标磁性能结果的拟合数据输出，支撑取样优化、精准分切、辅助综合判定等功能应用，进一步优化硅钢产品质量管控体系。 The magnetic performance index of silicon steel products is one of the most critical quality indexes.However,at present,100%determination of magnetic performance depends on the offline laboratory test results of samples,and the measurement results of the online detector configured in the production line cannot be applied in practice due to the accuracy problem.Based on the existing quality control system of silicon steel products,big data technology was used to analyze and model the production d... 

6.5%Si电工钢是一种优异的软磁材料,织构对其磁性能影响很大。利用温轧工艺对6.5%Si电工钢热轧板进行不同压下率轧制,研究了温轧板织构随压下率的变化规律。实验结果显示,随着压下率的增大,{100}〈110〉、{110}〈100〉和γ纤维织构在薄板表层中的强度先增强后减弱,当压下率达到75%时,沿板厚方向形成3个组织区域:表层细晶粒区({110}〈100〉取向为主)、过渡层({111}〈110〉和{111}〈112〉变形晶粒区)和中心层(以拉长的γ纤维织构和{100}〈110〉取向晶粒为主),这种组织和织构不均性对后期织构的发展有重大影响。 6.5wt% Si electric steel has excellent soft magnetic properties,on which texture play important role.In this experiment,warm rolling technique was employed to investigate the effect of rolling reduction on texture.It was found that the density of {100}〈110〉,{110}〈100〉 and γ-fiber textures first increased and then decreased with increasing of the rolling reduction.At 75% reduction,the microstructure along the thickness of the sheet formed three zones,containing surface layer with {110}〈100〉 orien... 

森吉米尔二十辊轧机是冷轧电工钢的主要机型,具有整体刚度大,辊径小,轧制道次压下量大,产品精度高等特点,简要介绍了近年来冷轧电工钢森吉米尔二十辊轧机领域进展,在轧机结构、厚度自动控制、板形自动控制等方面的技术及研究。 20-h Sendzmir reversible mill is the main type of cold rolled electrical steel which has the characteristic of high integral stiffness,small roller diameter,high pass reduction and high product quality.In this paper,the recent progress of frame structure,automatic gauge control,automatic flatness control of Sendzmir mill is introduced. 

【作者】 潘恒韬； 欧阳帆； ...

本发明揭示了一种无取向硅钢的生产方法。所述生产方法中：按照Si:0.3～1.2％炼钢、制坯；将铸坯加热到1050～1150℃并保温150min以上，而后轧成厚度40～45mm的中间坯，再经精轧、卷取得到厚度为3.00±0.25mm的热轧卷板，精轧开轧温度≤Ar1＝872℃+1000*(11*[Si]‑14*[Mn]+21*[Al])；当Ar1≥1000℃，终轧温度T≤840℃，否则T≤Ar1‑160℃；卷取温度≤550℃；经常化、酸连轧得到0.500±0.005mm的冷硬卷，常化温度为850～950℃；退火温度820～950℃，经成品退火、冷却、涂层和精整，得到无取向硅钢成品。

对无取向电工钢中的夹杂进行了系统的分析。利用小样电解,采取不同电解液,不同的分离方法对无取向电工钢中稳定和不稳定夹杂物进行了提取、分离和收集。利用扫描电镜(SEM)、X-射线衍射、ICP等对电解分离收集的夹杂物进行了定性和定量分析。 The inclusion analysis of the non-oriented electrical steel has been investigated.By using small sample electrolytic analysis,with different electrolytes and different separation ways,the stable inclusions and unstable inclusions was drew,separated,and collected.With utilizing the methods of SEM,X-ray and ICP,the qualitative and quantitative analysis of inclusions in the non-oriented electrical steel was obtained. 

本实用新型公开了一种变压器铁芯硅钢片的横剪打磨装置，包括出料平台、传送机构和打磨机构，所述出料平台的出料端设置有打磨机构，且两组所述打磨机构对称设置在硅钢片的上下两侧，两组所述打磨机构之间构成打磨通道，所述传送机构靠近于出料平台的出料端设置在出料平台上，且所述出料平台上的硅钢片通过传送机构依次朝向打磨通道内位移，通过两组对称设置的打磨机构对硅钢片的两侧面进行同时打磨，具有较高的打磨效率。

根据本发明的一个实施例的无取向电工钢板，以重量％计，所述钢板包含Si：2.1至3.8％、Mn：0.001至0.6％、Al：0.001至0.6％、Bi：0.0005至0.003％和Ge：0.0003至0.001％，余量包含Fe和不可避免的杂质。

本发明公开了一种高牌号硅钢板的激光焊接方法，目的在于改善常化工艺前焊接焊缝和常化工艺后焊接焊缝质量，避免产生焊接缺陷及裂纹，降低连续生产过程中硅钢板的断带率，提高生产效率。所用硅钢板的Si含量为1.75－3.45％，均为质量比，厚度为1.85－2.90mm。本方法的特征在于根据前后两卷高牌号硅钢板的总含Si量(Si1+Si2)和总厚度(h1+h2)调整激光焊接的焊接功率和后加热退火工艺的加热退火功率，实现单面拼接焊。本方法根据钢材总含Si量及总厚度的不同，给出了具体的激光焊接工艺参数。采用该方法，可以改善焊缝显微组织，降低焊缝区域与母材区域的硬度差，减少焊接应力，提高焊缝质量；此外还具有焊接耗能少的优点。

通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响。对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响。结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加。退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少。 The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual st... 

本发明涉及一种提高热连轧无取向硅钢厚度精度的方法，包括以下步骤：1）降低粗轧终轧温度和精轧入口温度，减少精轧轧制过程中奥氏体向铁素体相变的体积数，提高轧制力模型预估的精度；2）降低精轧机活套张力，减少因张力带来的厚度扰动。本发明通过降低粗轧终轧温度、精轧开轧温度和调整精轧机张力，可以有效提高精轧机轧制力预估精度，提高厚度精度以及宽度精度。