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基于TEAM(Testing Electromagnetic Analysis Methods)Problem 21基准模型和不同类型的磁化曲线Bm-Hm及Bm-Hb数据,分别在50 Hz至200 Hz的频率范围内计算了基准模型的硅钢叠片内的损耗及磁通,并考虑集肤效应和材料的电-磁各向异性的影响。数值计算结果与实验测量结果具有很好的一致性。提出的有限元建模方法和基于模拟结果的分析、结论有助于提高大型电力变压器的电磁设计的有效性。 Based on TEAM(Testing Electromagnetic Analysis Methods) Problem 21 standard model and the different B-H(such as Bm-Hm and Bm-Hb) curves,the iron loss and magnetic flux inside the grain-oriented(GO) silicon steel lamination are modeled under different frequency(from 50 Hz to 200 Hz) in this paper,And the influences of skin effect and electric-magnetic anisotropy on the numerical simulation results have been examined.The calculated and measured results with respect to the model are in good agreeme... 
2011-04-28 203 5.8

利用OM、EBSD等手段研究了热轧板两段式正火时在700℃保温不同时间(0、10、30、60 min)对含Sb冷轧无取向电工钢磁性能的影响。结果表明,700℃保温10 min处理的样品铁损最小,磁感最高。对成品板的组织分析结果表明,试样的晶粒尺寸随700℃保温时间的延长先增大后减小,保温10 min时晶粒尺寸达到最大;分析成品试样织构发现,有利织构组分随700℃保温时间的延长先增加后减少,保温10 min时有利织构组分所占百分比最高。因此,含Sb冷轧无取向电工钢两段式正火时在700℃保温10 min时磁性能最好。 Effect of two-stage normalization on magnetic property of non-oriented electrical steel containing antimony was investigated by using optical microscope(OM) and electron back-scattered diffraction technology(EBSD).The experimental results show that the iron loss and magnetic permeability of the specimen insulated at 700 ℃ for 10 min are lowest and highest respectively.The grain size of the finish specimens increases first and then decreases with the increase of holding time.Similarly,the advanta... 
2013-11-28 203 5.8

本实用新型公开了一种优化取向硅钢底层质量的打孔隔板,包括取向硅钢底层和分隔板,所述取向硅钢底层的上方安装有分隔板,且分隔板的内部设置有通孔,所述通孔的下方安装有卡合板,且卡合板的下方安装有硅胶密封垫,所述分隔板的右侧安装有三脚架,且三脚架的右侧安装有螺钉,所述三脚架的左侧安装有螺母,且三脚架的下方安装有固定横杆,所述分隔板的上方安装有定位套筒,且定位套筒的内部设置有内螺纹,所述内螺纹的内部安装有定位横杆,且定位横杆的两侧设置有外螺纹。该种优化取向硅钢底层质量的打孔隔板中,通过设置的通孔,分隔板将取向硅钢底层分隔时,通过通孔可以将分隔连通,减少在使用时分隔板阻拦取向硅钢底层的磁感性能。
2020-12-14 203 6.8

基于BOF→RH→CSP生产工艺,研究了RH精炼过程钢中夹杂物类型演变及MgO·Al2O3夹杂物形成规律,同时对MgO·Al2O3夹杂物的形成条件进行了热力学计算,借助CFD数值模拟软件研究了RH精炼过程卷渣行为。研究发现,RH精炼过程20和30 min时,w([MgO])/w([Al2O3])为0.005~0.020,未发现MgO·Al2O3夹杂物;RH出站后夹杂物w([MgO])/w([Al2O3])为0.3~0.5,且RH精炼结束后MgO·Al2O3夹杂物占夹杂物总量的58.4%;另外,RH精炼过程钢液表面速度CFD模拟结果为0.57 m/s,大于临界卷渣速度0.45 m/s,且顶渣成分与夹杂物成分相近,存在卷渣现象。热力学计算表明,钢液与炉渣平衡时钢中w([Al])为0.31%~0.37%,w([Mg])为0.00024%~0.00028%,在MgO·Al2O3生成区域之内。减少RH处理过程卷渣,浇铸过程下渣及控制顶渣和包衬相中MgO质量分数可抑制MgO·Al2O3夹杂物形成。 Based on the practical production of non-oriented silicon steel, the evolution of inclusion type and the formation of MgO·Al2O3inclusion were analyzed in the process of BOF→RH→CSP. The thermodynamic conditions for forming MgO·Al2O3inclusion were discussed and the behavior of slag entrapment of molten steel was also simulated by CFD software during RH refining. The results showed that the value of w([MgO])/w([Al2O3]) was in the range of 0.005-0.020 and no MgO · Al2O3 inclusion was observed at 20 ... 
2014-09-28 203 5.8

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。
2020-12-16 203 6.8

采用电子背散射衍射技术测定50SW1300冷轧无取向硅钢中不同尺寸范围晶粒的含量,利用主成分回归分析法,综合研究不同尺寸范围晶粒的含量对无取向硅钢磁性能的影响。结果表明:通过主成分回归分析法能够从不同尺寸范围晶粒的含量的多个影响因素中获取主要的因素,定量研究它们对无取向硅钢磁性能的影响规律。分析表明,无取向硅钢的铁损与不同尺寸范围晶粒的含量之间存在着可靠的多元线性关系,在一定范围内,较大尺寸晶粒的含量越多,其对铁损优化的作用越明显;而无取向硅钢的磁感与不同尺寸范围晶粒的含量之间并无线性关系。 Distribution of grain size in cold rolled non-oriented silicon steel 50SW1300 was measured by EBSD.The effects of the distribution of grain size on magnetic properties of the non-oriented silicon steel were comprehensively researched by means of principal component regression method.The results indicate that the main factors influencing the magnetic properties in the distribution of grain sizes,which can be used to guantitative study the magnetlic properies of the steel,are obtained by principal... 
2014-11-28 203 5.8

试验2.3Si无取向硅钢(/%:0.003C,2.30Si,0.16Mn,≤0.020P,≤0.005S,0.54Al)冷轧板由常化和未常化的2.5 mm热轧板冷轧至0.6 mm(压下率76%),经750~950℃2.5 min中间退火后再冷轧至0.5 mm(压下率16.7%),成品板经890℃+960℃2.5 min退火。研究了中间退火温度对该钢晶粒尺寸、织构和磁性能的影响。结果表明,随中间退火温度的升高,二次冷轧前晶粒和成品晶粒增大,成品中不利织构组分{111}和{112}减弱,磁性能得到改善。热轧板经过常化时的磁性能明显好于未经常化时的磁性能,但中间退火温度较高时常化对磁性能的有利作用减弱。 The test cold sheet of 2.3Si non-oriented silicon steel(/%:0.003C,2.30Si,0.16Mn,≤0.020P,≤0.005S,0.54Al) is first cold-rolled from normalized and un-normalizing 2.5 mm hot-rolled plate to 0.6 mm sheet(reduction 76%),then intermediate annealed at 750~950℃ for 2.5 min and double cold-rolled to 0.5 mm sheet(reduction16.7%),the finished sheet annealed at 890℃+960℃ for 2.5 min.Effect of the intermediate annealing temperature on grain size,texture and magnetic performance of the steel has been studied.... 
2014-02-28 203 5.8

通过试验确定氩气分析流量为3.5L/min,静态流量为0.75L/min,冲洗时间为3s,预燃时间为12s,积分时间为5s的激发条件,采用火花源原子发射光谱法测定取向硅钢中碳、硅、锰、磷、硫。分别采用铣床铣样、砂轮磨样两种制样方式进行了精密度考察,发现制样方式对结果影响不大;讨论了取向硅钢样品中碳、硅、锰、磷、硫测定时可能存在的共存元素干扰,发现硅对锰元素的干扰不可忽略,采用干扰系数法进行了校正,据此拟合得到各元素校准曲线的相关系数均在0.999 0以上。精密度考察结果表明,碳、硅、锰、磷、硫的相对标准偏差(n=10)在0.71%~9.4%之间。对两块取向硅钢生产样品进行分析,并与钢铁研究总院进行比对分析,结果一致,且偏差均在允许范围内。 Carbon,silicon,manganese,phosphorus and sulfur in oriented silicon steel were determined by spark source atomic emission spectrometry.The selected excitation conditions were as follows:the analytical flow rate of argon was 3.5L/min,the static flow rate was 0.75L/min,the flush time was3s,the precombustion time was 12sand the integration time was 5s.Two sample preparation methods,including milling machine and grinding wheel,were investigated.The precision test results showed that,the determination... 
2013-10-28 203 5.8

本实用新型涉及变压器铁芯装配技术领域,具体公开了一种硅钢片铁芯的装配工装,包括底座、对称设于底座上的两个承压条以及快速装夹机构;所述快速装夹机构包括设于两个承压条一侧的安装框架、安装于安装框架两侧的侧挡板、紧固组件以及将安装框架和承压条之间定位的卡接组件;所述卡接组件包括安装于安装框架一侧的定位块、以及开设于承压条一侧的定位槽,所述定位块的内部开设有安装槽,本实用新型通过快速装夹机构能够实现安装框架的快速定位,从而便于安装框架的安装,有效的提高了安装框架的拆装效率,有助于硅钢片铁芯的快速装配,可提高硅钢片铁芯的装配效率,增加硅钢片铁芯的生产效益。
2021-09-09 202 6.8

本发明公开一种高牌号无取向硅钢的轧制方法,用于控制森基米尔二十辊轧机对原料带钢进行轧制,所述方法包括:根据所述原料带钢的规格参数,确定所述森基米尔二十辊轧机的第一中间辊的辊型及第二中间辊的辊型;根据所述原料带钢的合金含量及所述规格参数,确定所述第一中间辊的有效平面量;根据所述规格参数,确定所述森基米尔二十辊轧机的径向调整机构的凸度值;根据所述合金含量,设定所述森基米尔二十辊轧机进行轧制时的负荷分配和张力;按照所设定的负荷分配和张力分配对所述原料带钢进行轧制,且在轧制过程中以预设乳化液流量进行喷淋,以制得成品。本发明可减少高牌号无取向硅钢在轧制过程中发生脆性断裂,提高轧制的稳定性及生产效率。
2021-09-15 202 6.8

无取向硅钢特别是中牌号以上的无取向硅钢,随着含硅量的提高,常温下塑性较差,冷轧过程中轧制力明显提高,如果存在原料质量问题,极易发生断带事故,影响硅钢冷轧过程的成材率和生产效率。通过优化冷轧工艺参数,可提高冷轧稳定性。生产中通过合理分配冷轧各道次压下量和轧制速度,保证了轧制过程的稳定,很大程度减少了冷轧断带事故的发生。 Non-oriented silicon steel, especially in the low and middle grade, with the increase of silicon content, plasticity is poor at room temperature, rolling force in cold rolling process significantly improved .If there is the quality defect of raw materials , easily sheet is rolling off. Affect finished product rate and production efficiency in process of cold-rolled silicon steel. Through optimization of cold rolled process parameter , improve the stability of cold-rolling process. Through reason... 
2011-02-28 202 5.8

提供能够稳定地制造磁特性优异且钢卷长度方向的铁损的偏差少的取向性电磁钢板的取向性电磁钢板的制造方法。本发明是一种取向性电磁钢板的制造方法,包括如下工序:对钢坯进行热轧,根据情况实施退火,然后通过1次冷轧或夹有中间退火的2次以上的冷轧来制成具有最终板厚的冷轧板,接着对上述具有最终板厚的冷轧板进行脱碳退火,然后实施二次再结晶退火;在最终的冷轧之前,将钢板以100℃/s以上的升温速度加热到100℃~350℃的加热温度,上述钢板从达到加热温度到进入最终的冷轧的第1道次的时间为5秒以内。
2021-06-29 202 6.8

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