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薄带连铸流程下取向硅钢粗大λ晶粒(〈100〉//ND,normal direction)的“遗传”会导致磁性能恶化.为解决这一问题,针对取向硅钢的热轧孪生行为开展研究,结果表明:凝固组织粗大的取向硅钢在650℃热轧时可产生大量{112}〈111〉形变孪晶,这与具有高层错能的硅钢在较高温度下难以孪生变形的传统认知不同.热轧过程中复杂的应力状态降低了变形孪晶的取向依赖性,由于具有更高的储存能,孪晶界/孪晶界及孪晶界/晶界交叉点成为再结晶形核的优先位置,大大提高了常化过程中的再结晶率,受沿孪晶界应变分布及孪晶间距离的限制,沿孪晶界形核的再结晶晶粒通常呈“饼状”,最终形成以细小且取向漫散的再结晶晶粒为主的常化组织,消除了初始凝固组织中有害的粗大λ晶粒. In strip casting grain-oriented silicon steels, the inheritance of coarse λ grains(〈100〉//ND, normal direction) can deteriorate their magnetic properties. To solve the problem, twinning behaviors in strip casting grain-oriented silicon steels during hot rolling were investigated in this work. It is found that after rolling at 650 ℃, a number of {112}〈111〉deformation twins are formed in the coarse solidification microstructure of the steels, in contrast to the well-accepted view that it is diffic... 
2022-02-28 174 5.8

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。
2021-12-21 201 6.8

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P1.5/50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 P1.5/50 decreased from2.576 W/kg to 2.408 W/kg.And as the annealing temperature increased,the strength of the unfavorable texture componentγgrad... 
2022-01-28 165 5.8

【作者】 王爱华; ...
2013-10-28 99 5.8

基于简化的取向硅钢片模型,系统地对不同的交流激励下的硅钢叠片内铁损、交链磁通和空气中指定位置的法向漏磁的分布进行了\"单片级\"的测量,并建立了相应的硅钢叠片级问题的三维有限元分析模型,进行了大规模的数值计算分析。模型实验和数值分析的结果表明垂直进入硅钢片的漏磁通和损耗呈现浅透入的特点,在硅钢片内引起的涡流损耗在总铁损中占据了\"举足轻重\"的份额。用电磁场有限元分析软件MagNet瞬态场时步法计算结果与测量结果相吻合,说明本文方法研究复杂的硅钢叠片问题的有效性。 The measurement and 3D finite element analysis of the iron loss,interlinkage flux inside the laminated silicon steel sheets and the magnetic flux densities at the specified positions are carried out based on a verifying silicon steel sheet model.The modeling results show that the leakage flux vertically through the silicon steel sheets has the peculiarity of shin effect,and the eddy current loss caused by the AC leakage flux is a significant component of the total iron loss.The calculated result... 
2013-05-28 136 5.8

分别采用传统冷轧轧制液和纳米TiO2的冷轧轧制液,对无取向硅钢板进行了四辊冷轧实验.重点研究两种冷轧轧制液的轧制润滑性能和对轧后硅钢薄带表面质量和耐蚀性能的影响.通过场发射电子显微镜和能谱仪对使用两种轧制液轧后得到的硅钢薄带表面形貌和成分进行了分析.给出了轧制液中TiO2纳米粒子在轧制过程中的抗磨减摩机理.在轧制载荷较高时,纳米TiO2轧制液具有优良的轧制润滑性能并能显著改善轧后硅钢薄带的表面质量.同时在高载荷作用下,TiO2纳米粒子被压入硅钢薄带基体,形成一个滑动系来支撑载荷,从而使润滑膜的耐磨性提高. Non-oriented silicon steel strips were rolled on a four-high cold rolling mill lubricated by a traditional cold rolling liquid and a nano-TiO2 cold rolling liquid,with emphasis on studying the rolling lubrication performance of both the liquids and their effect on the surface quality and corrosion resisting property of the silicon steel strips.The surface micrograph and composition of the silicon steel strips after being rolled with both the liquids were characterized by field emissio... 
2013-04-28 140 5.8

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 ... 
2022-12-28 185 5.8

一种甩带法制备高磁性能含磷硅钢薄带的方法,属于合金材料领域。本发明以硅钢(Fe‑(3‑6.5)wt.%Si)块体为母合金,并添加一定量的硅铁合金及磷铁合金,放置于中频感应炉中,熔融后经快速凝固‑甩带、冷轧、热处理工艺,得到具有优异性能的含磷硅钢薄带。对于硅钢而言,P元素的少量加入能够有效的提升电阻率从而显著降低铁损,且具备优化软磁性能的作用。而采用甩带法能够充分利用其快速凝固的特征,从根本上避免了P元素在传统熔炼冷却过程中严重偏析的缺陷,极佳地保证了产品的组织优势与软磁性能。本发明具有操作简单、生产效率高、产品精度高、工艺流程短、无污染与夹杂、性能优异等优点。
2021-01-05 150 6.8

本发明公开了一种超薄取向硅钢用的半有机绝缘涂料。该半有机绝缘涂料,按质量百分比计,包括以下组分:10~25%磷酸盐,1~10%含有环氧基的硅烷耦合剂,0.2~2.0%有机硅烷,1~10%铬酐,1.5~6%二氧化硅粒子,0.3~5%碱,余量为水;其中二氧化硅粒子的粒径为100~300nm。该半有机绝缘涂料应用于超薄取向硅钢表面时,既提高了涂层与基体的附着性,又保证了涂层的绝缘性和耐热性,涂层附着性为A级,叠片系数大于0.96,可耐900℃高温,并且涂层较薄(小于1μm)时,钢板的绝缘电阻大于30Ω·cm2/片,绝缘性能优异,可满足超薄取向硅钢的应用需求。
2021-11-19 130 6.8

本发明公开了一种电工钢片磁致伸缩模型的建模方法,包括:测量不同旋转磁场下电工钢片磁致伸缩对称蝴蝶曲线εk;对所测量的对称蝴蝶曲线进行辨识,构建磁致伸缩蝴蝶曲线εk的Everett函数数据库;将输入的矢量磁场B波形用旋转磁场形状参数Bmax,最大值方向的方向角θ和椭圆长短轴的长度比λ拟合,得到拟合后结果;通过线性插值法在磁致伸缩Everett函数数据库中进行插值,获得拟合后结果所对应的磁致伸缩Everett函数值Ek;根据Everett函数值Ek计算得出对应的磁致伸缩蝴蝶曲线εk。应用本发明实施例,不仅可以描述矢量磁致伸缩特性,还可以通过计算估算出旋转磁场下的瞬态磁致伸缩。此外,还能够考虑磁致伸缩的各向异性特性。
2021-09-27 183 6.8

研究了取向硅钢制备过程中常见的两种冷轧工艺,主要研究了一阶段冷轧与两阶段冷轧+中间退火工艺对初次再结晶组织及织构的影响.结果表明:采用两阶段冷轧+中间退火工艺制备以Cu2S为主抑制剂的取向硅钢,其初次再结晶平均晶粒尺寸为18.1μm,高斯晶粒的体积分数为0.6%,迁移性强的重位点阵晶界(Σ5+Σ9)和高能晶界(20°~45°取向偏差角)所占比例分别为1.8%和50.4%.与一阶段冷轧工艺相比,其初次再结晶晶粒较细,且高斯晶核与特征晶界所占的比例较高,有利于高斯晶粒发生二次再结晶. Two common cold-rolling processes of grain oriented silicon steel and the effects of the single stage cold rolling and tw o-stage cold rolling w ith intermediate annealing processes on the primary recrystallization microstructure and texture w ere investigated. The results revealed that for the grain oriented silicon steel prepared under the tw o-stage cold rolling process w ith intermediate annealing w ith Cu 2 S as the main inhibitor,the average grain size of the primary recrystallization micr... 
2014-02-28 161 5.8

稀土元素在许多钢中发挥着独特而且不可替代的重要作用。半个世纪以来,它的作用已经在各种低合金和特殊合金钢中的研究及应用中得到充分的证明;然而,作为具有稀土资源优势的中国,在属于重要功能材料的无取向电工钢中稀土的应用却落后于国外,本文就中国稀土在无取向电工钢中的应用研究作简要的评述,希望能够进一步推进此领域的研究,并且促进中国稀土在无取向电工钢中应用技术的发展,缩短与国外差距,并提出了在此应用领域今后需深入开展的研究方向。 Rare earth elements play a unique and irreplaceable role in a lot of steels,it has given the full proof by the practice of various low alloy steels and special alloy steels since half century.However,as our country has the advantage of rare earth resources,RE application technology in non-oriented electrical steels has lagged behind abroad.The application researches of rare earth in non-oriented electrical steel in our country are briefly reviewed in this paper,which hope to promote the research... 
2014-05-28 141 5.8

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