硅钢资料

【机构】 武钢研究院； ...

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... 

本发明涉及含Cu无取向硅钢的生产方法，转炉炼钢，真空处理过后连铸成坯；铸坯化学成分：1.0≤Si/Cu≤3.0,3.0≤Si+Cu≤5.5％，S≤0.0015％，(Mn+Cu)/S≥3000，其他为Fe,Als,P以及不可避免的杂质元素；对铸坯进行粗轧；粗轧后的中间坯采用热卷机进行强制卷取，开卷后中间坯进入保温箱，控制保温箱内冷却速度≤5℃/s；进入保温箱的中间坯温度T1满足：1000‑(Si+Cu)×103≤T1≤1100‑(Si+Cu)×103；高压除鳞，精轧，层流冷却，卷取；连续酸洗；冷轧到目标厚度，成品退火，涂层；成品卷进行时效处理。成品卷具有较低的中高频铁损，高磁感和高屈服强度。

本发明提出一种预判取向硅钢冷轧脆断发生的方法，将酸洗带头20‑30cm进行剪切取样，在取到的样板上面注明工作侧和传动侧；将取好的样板送至焊缝检测冲压机处，通过冲压机对样板进行冲压，根据不同钢带厚度，设定不同冲孔机压力，对样板进行冲压后，通过观察裂纹形貌，预判常化卷在冷轧轧制过程中是否会发生脆断，本发明使带钢在冷轧前能够制定相应的对策措施，从而降低冷轧断带所产生的损失。

【作者】 康凌晨； 王丽娜； ...

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。

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. 

本发明公开了一种高牌号硅钢的穿带激光焊接方法，包括：将焊缝中硅含量降低到Si焊＜1.9%。采用激光+填丝焊接，填丝ER50‑6碳钢焊丝；根据焊缝截面积和激光焊接速度；激光填丝焊接时，激光线能量应足够大，达到填丝在熔池中充分混合，均匀分布，不至于填丝的成分浮在熔池的上半部分。采用此方法使焊缝组织从粗大铁素体变成细小、致密的无碳贝氏体，晶内沉淀相和晶间脆性相相对大幅减少，提高了焊缝韧性和成形性能，保证了高硅硅钢带的穿带焊接和连续生产。

通过对激光粒度分析仪测量硅钢级氧化镁(MgO)的分析条件进行优化,如分散介质、分散方式、样品预处理、仪器暗淡度等,探讨了硅钢级MgO粒度范围测量重现性较好的试验方法,满足硅钢生产过程控制对MgO粒度的要求。 The analysis condition of the laser particle size analyzer on grain oriented silicon-steel grade magnesium oxide is optimized,including the dispersion medium,dispersion methods,sample preparation,and instrument obscuration,etc.Therefore,particle size measurement with good reproducibility for silicon-steel magnesium oxide is discussed,which may meet the requirement of MgO particle size for silicon-steel process control. 

介绍了国内无底层取向电工钢生产技术水平、产量和用途，简述了无底层取向电工钢作为取向电工钢超/极薄带母料及应用于制作大型发电机组铁心、风电等电机铁心和变压器铁心等的情况。 The production technology level,output and application of domestic glassless grainoriented electrical steel were introduced,and the application of glassless grain-oriented electrical steel as parent material of ultra-thin strip of grain-oriented electrical steel and in making large-scale electric generator cores,wind power motor cores and transformer cores were briefly described. 

目的提高硅钢的磁性能。方法采用多弧离子镀技术,在普通取向硅钢薄板两面沉积高硅FeSi合金层制得高硅梯度硅钢,并进行热处理,观察其显微组织,测量磁性能。结果退火态高硅梯度硅钢表面的高硅FeSi合金层与基底结合紧密,均匀致密。高硅梯度硅钢中硅含量呈梯度分布,最表层硅质量分数为11.0%,随着深度增加,硅含量逐渐降低,在距表面20μm处硅质量分数仍能达到6.5%。沉积态高硅梯度硅钢的电阻率ρ、低频铁损P10/50、高频铁损P10/1k及磁感应强度B8分别为68.6μΩ·cm,0.82W/kg,83.3 W/kg和1.73 T,退火后分别为63.1μΩ·cm,0.44 W/kg,54.38 W/kg和1.89 T。结论由于表层高硅FeSi合金层的存在,梯度高硅钢的低频磁学性能良好,但高频损耗需进一步改善。 Objective To improve the magnetic properties of silicon steel. Methods FeSi alloy coatings with high-silicon content were deposited on the surface of common grain-oriented silicon steel by cathodic arc plasma evaporation,and then a kind of high silicon gradient steel was prepared. The morphologies,content and magnetic properties of the samples were tested. Results FeSi alloy coatings were featured with compact microstructures and excellent adhesive quality with the substrates. The silicon conten... 

【作者】 谌剑； ...