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针对本钢薄板坯铸机在生产无取向电工硅钢的过程中存在的铸坯拉断、中包增碳、增氮等问题,进行了连铸工艺优化。通过采用新型无碳中间包覆盖剂、环保中间包干式料及专用结晶器保护渣后,降低了铸坯增碳量;通过控制钢包到中间包的增氮环节,降低钢水增氮;适当增大二冷水量,控制钢水过热度,防止铸坯拉断等生产事故的发生。改进工艺后,精炼后到成品铸坯的平均增碳量能控制在10×10-6以内,平均增氮量能控制在4×10-6以内。 The technology optimization has been adopted for preventing nitrogen increasing and carbon increasing in Benxi thin slab producing non-oriented silicon steel.Measures accordingly were adopted and satisfactory results were achieved. 
2011-05-28 268 5.8

【摘要】 <正>目前,日本进口硅钢猛增,6月份4181吨,...
2011-05-28 268 5.8

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。
2020-12-17 268 6.8

对取向硅钢在不同气氛下的高温退火工艺进行实验室模拟,利用X射线衍射仪(XRD)分析了硅钢退火至900℃和1170℃时的样品表面氧化层和底层的物相组成,采用场发射扫描电镜(SEM)观察了样品表面氧化层和底层在截面方向上的微观形貌特征,并计算了高温退火一次升温阶段氧化反应的吉布斯自由能以及900℃时退火气氛的氧分压。结果表明:当退火气氛的露点温度保持一定时,较高的氢气含量有利于生成完整连续的底层;当退火气氛的水氢分压比保持一定时,在露点温度与氢气含量两者较低的条件下,底层附着性不佳易脱落,较高条件下,底层中夹杂着较多的铁单质;当氧化层中无FeO时,底层完整连续但易脱落,当FeO层较薄时,底层下方存在部分未反应的SiO2,当FeO层较厚时,底层不完整连续且有分层。 The high temperature annealing process of grain-oriented silicon steel in different atmospheres was simulated in the laboratory. X-ray diffractometer(XRD) was used to analyze the phase compositions of the surface oxide layer and forsterite film of the silicon steel annealed to 900 ℃ and 1170 ℃. Field-emission scanning electron microscopy(SEM) was used to observe the micro morphology characteristics of the surface oxide layer and forsterite film of the samples in the cross section direction. The ... 
2022-12-28 268 5.8

采用ZMLMC超高梯度定向凝固装置,研究了5种凝固速率(10、35、80、150和450μm/s)对定向凝固50W600无取向硅钢的固液界面稳定性转变规律和一次、二次枝晶间距的影响。研究结果表明,在特定的温度梯度下,随着凝固速率的增加,定向凝固的固液界面由胞状晶转变为胞状枝晶,再转变为细小的树枝晶。随着凝固速率的增加,定向凝固组织的枝晶形貌逐渐细化,一次和二次枝晶间距逐渐减小,且与冷却速率之间都符合指数关系:λ1=151.73×(G L·R)-0.31,λ2=22.07×(G L·R)-0.44。当冷却速率达到4.275℃/s时,一次、二次枝晶间距分别为112μm、14.1μm。 Under the conditions of certain temperature gradient and different solidification rate,the directional solidification experiment of non-oriented electrical steel 50W600 was carried out.The microstructure of 50W600 steel was also analyzed in different solidification rate.The result shows that the solid/liquid interface of the steel undergoes an evolution from cellular,cellular dendrite and finally to fine dendrite morphologies.The dendrite refines gradually and the distance between dendrites decr... 
2013-11-28 267 5.8

本发明揭示了一种新能源驱动电机用无取向硅钢及其生产方法。所述硅钢通过依序进行的炼钢、连铸、热轧、常化、酸洗、无预热单机架冷轧、退火、冷却、涂层和精整制备而成,炼钢时不添加Cu、Cr、Ni、Nb、V、Ti,硅钢的化学成分:Si:2.95%~3.15%,Al:0.75%~0.95%,Si+2Al:4.6%~4.9%,Mn:0.5%~0.7%,Sn:0.03%~0.04%,C≤0.0025%,余量铁;Mn/S≥380,Al/N≥200。本发明在保证磁性能的同时,提高了强度,解决了现有技术所存在的磁性能和强度的兼顾问题,能够满足新能源汽车的驱动电机上的应用要求。
2021-10-26 267 6.8

本发明公开了一种极薄取向硅钢铁芯及其制造方法,所述制造方法,包括:S1、剪切分条:将取向硅钢根据制作铁芯的宽度要求进行分条剪切;S2、卷绕:根据铁芯的规格型号要求,选取铁芯模具进行卷绕;S3、压块固定:将卷绕好的铁芯用压块固定;S4、退火加工:将固定好的铁芯,阶梯式升温至780℃保温3h退火处理,保护气氛为氮气,之后冷却降温;S5、浸胶:将降温后的铁芯,进行真空浸胶处理;S6、烘干:将浸胶处理后的铁芯烘干处理;S7、装配。该发明制造的极薄取向硅钢铁芯,能彻底消除内应力,磁路各处均无高磁阻存在,空载电流与励磁电流均大幅度下降,从而最大限度的恢复了极薄取向硅钢加工后原有择优取向织构及电磁性能。
2021-01-18 267 6.8

本发明提出了一种无机绝缘漆,由下列物质组成,其重量百分比为:质量百分含量为50~55%的磷酸二氢铝溶液:30~70%;质量百分含量为60~70%的磷酸二氢锰溶液:10~15%;质量百分含量为80~85%的硼酸溶液:5~6%;质量百分含量为99%的硅烷偶联剂溶液:1~5%;质量百分含量为30~35%的硝酸盐溶液:0.1~0.5%;硅溶胶:10~15%;纳米硅酸铝:10~15%;纳米二氧化硅:20~30%;消泡剂:1~5%;水溶剂:适量。本发明采用磷酸二氢铝、纳米二氧化硅为主料制备了一种极薄硅钢带薄绝缘无机绝缘漆的涂层,涂层厚度均匀性好,涂层表面光亮、附着性强、绝缘电阻系数高。
2021-07-05 267 6.8

试验研究了球刻痕法对高磁感取向硅钢的铁损、矫顽力、相对磁导率、巴克豪森噪声等磁学性能的影响.研究结果表明:经过球刻痕处理后,高磁感取向硅钢的铁损明显降低,矫顽力下降,8 mm球刻痕过后铁损值与矫顽力分别下降16.2%和14.7%,且铁损和矫顽力均随刻痕间距降低而减少.刻痕后的高磁感取向硅钢磁导率在高磁感应强度下明显上升,刻痕后巴克豪森噪声值明显降低,经过对比分析确定8 mm为球刻痕的最佳刻痕间距.从磁畴观察、细化磁畴的原理等方面解释了细化磁畴对高磁感取向硅钢性能的影响原因. The effects of the ball scribing on magnetic properties of high permeability grain-oriented silicon steels,including the iron loss,coercive force,relative permeability,and Barkhausen noise were investigated. The results showed that the iron loss and coercive force of the high permeability grain-oriented silicon steels apparently decreased 16. 2% and 14. 7% respectively after 8 mm ball scribing and they both decreased with the decrease of the scribing spacing at the same magnetic flux density. At... 
2013-11-28 267 5.8

本发明公开了一种激光刻痕降低取向硅钢铁损的制造方法,采用0.23‑0.35mm厚取向硅钢作为原材料,钢带在拉伸热平整线出炉后进行激光刻痕处理,细化磁畴,进而降低取向硅钢成品铁损值,达到优化磁性能的目的。本发明的激光刻痕处理后取向硅钢的铁损改善率可达到9‑16%,且经过500℃以上退火后,铁损又恢复到刻痕前状态。
2021-04-16 267 6.8

为满足用户对无取向电工钢中硫含量的要求,采用CaO-CaF2复合渣系为脱硫剂,利用RH投入法对无取向电工钢进行深脱硫试验。试验结果表明,RH精炼渣成分控制在w CaO43%~51%、w Al2O325%~31%、w MgO4%~6%、w SiO29%~12%、w(FeO+MnO)3%~6%,在脱硫剂加入量为6~8 kg/t时,钢中平均硫含量从32×10-6降低到18×10-6,RH平均脱硫率为43.3%,最高达47.1%。利用KTH模型计算精炼终渣平均硫容量为0.003 1,RH精炼结束时渣-钢间实际平均硫分配比从14增加到52。 In order to satisfy the requirements of consumers on sulfur content in non-oriented electrical steel,taking( CaO-CaF 2) based flux as desulfurizer,industrial experiments on deep desulphurization of non-oriented electrical steel were carried out during RH process. The results show that as the compositions of refining slag are appropriately controlled with w CaO of 43% ~ 51%,w Al2O3 of 25% ~ 31%,w MgO of 4% ~ 6%,w SiO2 of 9% ~ 12%,and w( FeO + MnO) of 3% ~ 6%,and the desulfurizer added are at 6 ~ ... 
2013-06-28 267 5.8

试验了通过NaCl-KCl-NaF-SiO2熔盐在电流密度50 mA/cm2、电沉积脉冲电流正反向比9:1和750850℃60min电沉积下阴极(/mm)20×20×0.5的1.6Si无取向冷轧硅钢片断面层硅的分布,并通过计算得出Si的扩散系数。结果表明,电沉积温度由750℃提高至850℃时,试样中Si含量增加,扩散的深度由18μm提高到40μm;电沉积温度与Si在钢中的扩散系数近似符合Arrhenius指数关系。 The distribution of silicon at cross section of cathode(/mm) 20 × 20 × 0.5 sheet of 1.6Si non-oriented cold rolled silicon steel after electro-deposit treatment by NaCl-KCl-NaF-SiO2 molten salt with current intensity 50 mA/cm2,electro-deposit pulse current positive-negative ratio 9:1 at 750 850 ℃ for 60 min has been tested and the diffusion coefficient of Si is obtained by calculation.Results show that with increasing electro-deposit temperature from 750 ℃ to 85... 
2014-06-28 267 5.8

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