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本发明涉及一种常化后免酸洗生产取向硅钢的方法,取向硅钢的生产工艺路线为:冶炼→连铸→热轧→常化退火→拉伸矫直→抛丸→冷轧→脱碳退火→渗氮→涂MgO→高温退火→热拉伸平整及涂绝缘膜;本发明在常化退火后通过物理方法去除带钢表面的氧化铁皮,且效率高、效果好、操作简单、易于控制;与常规工艺相比,省去了酸洗及后续废酸处理工作,排除了酸雾对环境的污染,消除了取向硅钢带因酸洗而产生的潜在缺陷,产品质量更加稳定可靠。
2021-02-09 180 6.8

本发明公开了一种新能源汽车驱动电机用低铁损高强度无取向电工钢及其制造方法,所述无取向电工钢的化学成分及重量百分比包括C:0.001‑0.005%、Si:2.4‑3.0%、Mn:0.25‑0.5%、Al:0.70‑1.10%、P:≤0.02%、S:≤0.005%、0.015%≤Ce+Sn≤0.035%,余量为铁和不可避免的杂质,本发明通过加入Ce和Sn,净化钢质、微合金化提高无取向电工钢强度和磁性能,不需要添加固溶金属元素,且避免了高Si体系下的轧制困难问题,且不需要高温退火,解决了退火温度过高使晶粒异常长大,晶粒尺寸均匀性降低的问题,生产出的无取向电工钢具有较高强度的同时,还具有优良的磁性能。
2021-10-29 227 6.8

介绍了CSP工艺生产无取向电工钢各工序的设备特点、采用的工艺控制手段和电工钢产品质量情况,结合生产实践证明了马钢CSP工艺开发的无取向电工钢产品丰富了薄板坯连铸连轧的品种结构,发挥了薄板坯连铸连轧生产无取向电工钢性能均一、稳定的特点。 The equipment characteristic,the process control method and the quality of non-orientated silicon steel by CSP process were introduced.Combined with the production situation,it is proved that production of non-orientated silicon steel developed on Masteel CSP line would enrich product structure of thin slab continuous casting and rolling,and it exerts stable performance of non-orientated silicon steel. 
2013-06-28 206 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

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,... 
2011-08-28 187 5.8

本发明公开了一种低铁损高磁导率无取向电工钢及其生产方法,所述生产方法包括以下步骤:钢水连续浇铸成板坯,板坯经加热炉加热,再经热轧得到热轧板,然后经空冷和水冷后在500~650℃进行卷取;热轧板经常化处理、盐酸酸洗;酸洗后在可逆轧机上进行冷轧;最后经成品退火,退火温度为840~900℃,加热时间为240~500s;然后以不超过3℃/s的冷却速度冷却至500℃以下;涂覆绝缘涂层、固化,后经二次退火,即可得到低铁损高磁导率无取向电工钢,其磁性能满足P1.5/50≤3.50W/kg,μ1.5≥3800Gs/Oe,B5000≥1.76T的要求。
2021-01-22 189 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... 
2022-01-28 218 5.8

本发明公开了一种切口耐蚀性良好的无取向硅钢及其生产方法,属于电工钢生产技术领域。本发明的无取向硅钢包括以下质量百分比的元素:Si:0.2~2.7%,Mn:0.15~1.0%、Als:0.5~1.0%,Cr:0.1~0.3%;Ni:0.2~0.5%,P:≤0.01%,其余为Fe及不可避免的杂质。其生产工艺为:铁水预处理、转炉炼钢、真空处理、连铸、加热、热轧、酸洗、冷轧、退火处理和涂覆绝缘层。本发明通过合理的成分配比以及相匹配的生产工艺进行生产,最终得到了切口耐蚀性优良的低铁损、高磁感的无取向硅钢,从而能够有效满足电工钢的使用需求。
2021-10-25 203 6.8

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