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利用场发射电镜及能谱仪研究了取向电工钢薄、厚板坯铸锭中不同区域的析出相差异,确定了MnS、AlN及Fe3C的析出顺序和形貌特征。结果表明AlN以先析出的MnS为形核核心,形成粗大微米级的复合析出相。针状Fe3C既可以在复合析出相表面形成也可以在基体中单独出现,主要受冷却速度的影响。在1250℃保温1~2 h,AlN、Fe3C均可完全回溶,但部分MnS仍不回溶。MnS尺寸随着保温时间延长而增大。导致热轧板中沿轧向分布的粗大MnS,减弱了粒子钉扎力。 Precipitates in thin and thick slabs of electrical silicon steel were investigated by means of field emission SEM and EDS analysis.The precipitation sequence and the morphology of MnS,AlN and Fe3C particles were identified.AlN particles are observed to be nucleated on surface of MnS forming micron-meter-sized complex particles.Acicular Fe3C can precipitate on surface of the complex MnS/AlN particles or directly from matrix depending on cooling rate of the slabs.After holding at 1250 ℃ for 1-2 h,... 
2011-08-28 188 5.8

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... 
2022-01-28 218 5.8

结合冶炼无取向硅钢的生产实际,对钢中硫的来源,以及炉渣性质、钢水温度、底吹强度对脱硫的影响进行了分析。研究表明,转炉钢中硫的主要来源为铁水、废钢、铁水渣及石灰带入;冶炼硅钢时,终渣碱度为3.0~3.5,w((FeO))≤20%,终点钢水温度大于等于1 680℃,加大底吹搅拌强度能提高转炉脱硫效果。硅钢平均出钢硫的质量分数为0.004 8%,能满足无取向硅钢对硫含量的要求。 With the actual production of non-oriented silicon steel,the source of sulphur and the effect of metallugic parameters like slag properties,temperature of molten steel and bottom stirring on desulphurizing ability were investigated.The results show that the main source of sulphur is molten metal,scrap,the remaining slag volume in hot metal and lime.The degree of desulphurization for smelting silicon steel can be increased through adopting the following measures,such as the basicity of finishing ... 
2011-02-28 194 5.8

本发明一种解决取向硅钢热轧板晶粒粗大的方法,在取向硅钢的成分设计中减少固溶温度较高的MnS的含量,降低铸坯加热温度,同时计算实际取向硅钢成分中γ‑相含量与温度之间的关系,依据计算结果设计取向硅钢的热轧工艺,可以保证20%~30%的γ‑相数量,成功解决取向硅钢热轧板晶粒粗大的问题。
2021-04-15 165 6.8

本发明公开了一种宽频率低铁损无取向电工钢及其制备方法,属于无取向电工钢生产制造技术领域。它从电工钢表面向内依次包括0.005mm~0.1mm的渗透层和钢材内芯;所述渗透层是由硅原子向电工钢内渗透形成,渗透层中的硅元素含量为3wt%~8wt%;所述钢材内芯包括2.0wt%~5.5wt%的硅元素和不少于93.2wt%的铁元素。本发明能保证无取向电工钢具有低频低铁损性能同时有效降低高频条件下的铁损,具体铁损性能为:铁损P1.5/50≤2.35W/kg,铁损P1.0/400≤13.8W/kg。
2021-11-09 192 6.8

一种高强型高频电磁性能优异的硅钢薄带板,钢中化学成分按重量百分比计为:C≤0.0027%、Si3.10%~3.35%、Als0.80%~1.2%、Mn0.20%~0.85%、P≤0.050%、S≤0.0020%、N≤0.0020%、Ti≤0.0020%、V≤0.0020%、Nb0.0050%~0.080%,其余为Fe和不可避免的杂质。本发明的无取向硅钢薄带产品用于新能源汽车驱动电机的制造,其强度高,中高频电磁特性优异。
2021-09-15 152 6.8

本发明涉及电磁钢板技术领域,尤其涉及一种免涂层高碳高强耐蚀电磁钢板及其生产方法。所述电磁钢板按重量百分比计,包括如下组分:C为0.010%~0.150%,Si为1.30%~2.50%,Mn为0.50%~1.50%,P为0.04%~0.15%,S≤0.015%,Cr为0.10%~1.50%,Cu为0.2%~0.6%,Al为0.10%~1.50%,Sn为0.02%~0.10%,Ni≤0.0050%,Nb≤0.0050%,Ti≤0.0050%,N≤0.0050%,V≤0.0050%,其余为Fe和不可控残余元素。所述钢板生产方法包括如下步骤:1)板坯浇铸;2)板坯连轧及卷曲;3)热轧卷酸洗及冷轧;4)罩式退火;5)钢卷矫直或拉矫。本发明所生产专用产品在电磁性能相近情况下,强度进一步提升、耐蚀性能提高、生产流程缩短、生产难度下降,减少了涂层工序,降低了生产成本,同时不同盐雾试验锈蚀减少85%以上。
2021-01-06 176 6.8

【作者】 卢鹏; ...
2013-03-28 142 5.8

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