硅钢资料

本发明提供能够制造实现高磁通密度且磁特性优异的方向性电磁钢板的新颖并且得以改良的方向性电磁钢板的制造方法。本发明的一方案提供一种方向性电磁钢板的制造方法，其特征在于，其包含热轧工序、冷轧工序、一次再结晶退火工序、最终退火工序及平坦化退火工序，并进行喷丸处理和/或矫平加工处理及与溶液相接触的处理，上述溶液含有规定量的Cu等，pH为‑1.5以上且低于7，液温为15℃以上且100℃以下，钢板在上述溶液中浸渍的时间为5秒以上且200秒以下。

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... 

本发明揭示了一种高牌号无取向硅钢及其生产方法。所述无取向硅钢的化学成分以质量百分比计包含：C:0.002～0.004％，S≤0.003％，Si:1.4～1.7％，Mn:0.7～0.95％，P≤0.03％，Sn:0.015～0.035％，11×([Si]‑1.4％)＝14×([Mn]‑0.7％)。所述无取向硅钢的生产方法中，连铸坯加热温度1120～1150℃，精轧终轧温度为890±15℃，最后一道次精轧的压下量≥30％且最后两道次精轧的总压下量≥50％，卷取温度650±20℃；在酸连轧之前不需要进行常化处理，且所得无取向硅钢的磁性能佳，表面无瓦楞缺陷，满足低成本高牌号无取向硅钢的需求。

利用DSC、XRD,结合热焓分析对硅钢级氧化镁和二氧化硅的固相反应行为进行了研究。比较了不同二氧化硅原料及混合方法对硅钢级氧化镁反应性的影响,找到了一种更为有效的硅钢级氧化镁反应性的评估方法,克服了传统柠檬酸活性法在比较不同厂家生产的氧化镁的反应性上的局限性。进一步研究了Na₂B₄O₇添加剂、TiO₂添加剂对氧化镁和二氧化硅反应行为的影响,结果表明,Na₂B₄O₇添加剂含量的增加对反应有利,而TiO₂添加剂对反应有阻碍作用。 The solid-state reaction behavior between silicon-steel grade MgO and SiO₂ was investigated by DSC and XRD combined with enthalpimetric analysis.The influence of different kinds of SiO₂ and different preparation methods were studied and a specifical measurement that is more reliable was proposed to evaluate reactivity of silicon steel grade MgO.It overcomes the limitation of the traditional citric acid activity（CAA） method,which can not be used to evaluate the reactivity of... 

研究了退火温度对3.1%Si无取向硅钢组织和磁性能的影响规律。结果表明:退火温度从940℃提高至1 000℃,平均晶粒尺寸由98μm增加到145μm,铁损P_1.5/50从2.576 W/kg降低至2.408W/kg。随着退火温度的升高,γ不利织构组分强度逐渐降低,{111}〈112〉织构组分强度降低约16%,磁感B₅₀逐渐升高,磁性能水平提高。 The effects of annealing temperature on microstructure and texture and magnetic properties of 3.1%Si non-oriented silicon steel were investigated in this paper.The results showed that,when the annealing temperature increased from 940℃ to 1 000℃,the average grain size of metallographic structure increased from 98μm to 145μm,the iron loss value P_1.5/50 decreased from2.576 W/kg to 2.408 W/kg.And as the annealing temperature increased,the strength of the unfavorable texture componentγgrad... 

冷轧中中低牌号的无取向硅钢多采用万能凸度轧机(Universal crown mill,UCM)生产,其板形好坏受制于UCM轧机板形调节手段的协调使用。为掌握UCM轧机的板形控制特点,建立基于二维变厚度有限元的辊系弹性变形和基于三维差分的轧件塑性变形的六辊轧机耦合模型,对UCM轧机的板形调控性能进行详尽的分析,包括工作辊和中间辊弯辊、中间辊窜辊的调控功效、辊间接触压力分布等。在此基础上,提出可用指导生产的板形控制策略,指出UCM轧机在横向厚差控制方面的不足。针对工业生产中UCM轧机轧制无取向硅钢横向厚差大的问题,在大量仿真计算的基础上,开发具有高次曲线函数的边部变凸度(Edge variable crown,EVC)的工作辊。采用该工作辊后,各种品种的无取向硅钢的横向厚差不大于10μm的百分比由24%提高到99%,横向厚差的均值小于6μm,远小于之前的13μm。 Medium-low grade non-oriented silicon steel is rolled often by universal crown mill(UCM) during cold rolling.Its shape quality is dependent on the coordinated control of several shape adjustment devices of UCM.In order to understand the shape control characteristics of UCM,coupling model of six-high rolling mill,based on two-dimensional varying thickness finite element rolls elastic deformation model and three-dimensional finite difference strip plastic deformation model,is setup for the detaile... 

2.9 mm热轧3%Si高牌号无取向硅钢板（/%:0.004 6C、3.04Si、0.32Mn、0.49Als、0.004S、0.013P、0.0042N）由CSP（Compact Strip Production紧凑式带材生产线）流程:120 t BOF-70 mm CC-热轧工艺生产。热轧终轧温度872℃,卷取温度683℃。铸坯及热轧板的组织和夹杂物的分析结果表明,铸坯组织为典型的贯穿柱状晶组织;热轧板边部为再结晶组织,中部为纤维组织带有少量再结晶晶粒;高牌号无取向硅钢的主要夹杂物为铸坯-Al₂O₃,AlN和Cu₂S+MnS;热轧板-Al₂O₃,AlN,AIN+MnS和Cu₂S+MnS。 The 2.9 mm hot rolled 3%Si high grade non-oriented silicon steel plate（/%:0.004 6C,3.04Si, 0.32Mn,0.49Als,0.004S,0.013P,0.004 2N） is produced by CSP（Compact Strip Production） flow sheet i.e.120 t BOF-70 mm CC-hot rolling process with end rolling at 872℃and coiling at 683℃.The analysis results on structure and inclusions in casting slab and hot rolled plate show that the structure of slab is typical trans-columnar crystal,the structure of hot rolled plate at edge is recrystallized grain and in ce... 

本发明提供了一种无取向电工钢，以质量百分比计，其成分包括C：0.0010～0.0050％，Si≤2.5％，Al≤0.01％，Mn≤0.80％，P≤0.10％，S≤0.0070％，N≤0.0030％，其余为Fe及不可避免的杂质。本发明还提供了一种无取向电工钢的制备方法。本发明提供的一种无取向电工钢，不添加偏析或稀土等贵重元素且磁性能好、成材率高，本发明提供的无取向电工钢制备方法，工艺流程简单、生产周期短、制取成本低，且无需热轧板常化。

本实用新型公开了一种硅钢片焊接模具，包括底座，底座上均匀排布有多条滑槽，每条滑槽内连接有一根垂直设置的定位杆，定位杆底部穿过底座连接一气缸，气缸连接在底座底部。本实用新型结构设计合理巧妙，移动不同位置的定位杆，将定位杆与硅钢片贴合，不同滑槽内的定位杆之间相互错位，并利用气缸将硅钢片定位，这种结构不可以适用于各种形状的硅钢片，使用方便快捷。

在50Kg氧化镁坩埚真空感应炉上进行高硅电工钢的脱氧试验。结果表明,通过控制原料的成分、高真空下的碳氧反应和炉衬分解向钢液中的供氧,可使钢液的总氧含量≤15×10-6;在维持高温高真空条件下,当钢液中的反应达到一定程度后,延长精炼时间并不能降低钢液的总氧含量;完成精炼后加入硅钙合金沉淀脱氧可进一步降低钢液的总含氧量,但脱氧效果有限。 The test of high-silicon electric steel deoxidation has been carried out in 50Kg vacuum induction furnace with magnesium oxide crucible.Results show that the total oxygen could be ≤15×10-6in molten steel by controlling material components,carbon-oxygen reaction in high vacuum and oxygen contamination from crucible materials on molten steel;And when the reaction was carried through to a certain extent,total oxygen in molten steel could not be reduced by the extension of refining period in high va... 

本发明公开了一种硅钢与碳钢混合生产条件下提高钢带表面清洁度的方法，硅钢与碳钢混合冷轧轧制条件下，通过控制冷轧乳化液指标，轧机工作辊表面粗糙度，退火工序氢气吹扫流量，平整及重分卷工序钢带涂油量等措施，能够提高钢带表面清洁度。

双辊连铸技术是冶金及材料领域内的一项前沿技术,对于生产高品质硅钢具有独特优势.本实验研究了一种双辊铸轧w[Si]=4.5%的无取向硅钢,考察其铸态和常化处理后样品的组织、织构及析出相尺寸特征.结果表明:铸带组织以与铸带法向成5~20(°)倾角的柱状晶为主,晶内存在少量0.3~0.4μm的AlN析出相,铸带织构以λ(<001>//ND)织构为主,表层织构漫散.950℃/10 min常化处理后,析出相尺寸增大,表层λ织构增强. As an advanced technique of metallurgy and material science,twin- roll strip casting has unique advantages for producing high quality silicon steel. The present study was aimed at a 4. 5% Si non- oriented electrical steel for analyzing the structure,texture and the size of precipitates at the initial and normalized state. The results revealed that the initial structure mainly consisted of columnar grains with 5 ~ 20( °) angle to the normal of cast strip,and some AlN precipitates of 0. 3 ~ 0. 4 μ...