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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 77 5.8

取向硅钢热轧板中织构梯度对发展完善的二次再结晶十分关键,通过添加铜可以显著降低取向硅钢板坯加热温度,从而影响热轧板织构分布。利用X射线衍射仪,分析了实验室模拟薄板坯连铸连轧(TSCR)工艺的3种不同铜含量的取向硅钢热轧板织构。结果表明:不同铜含量热轧板表面到厚度1/4处均为弱的热轧织构,热轧板心部主要为{100}面织构;铜含量约在0.4%时,热轧板次表层的{110}<001>织构比例最高,而热轧板心部的{100}<110>织构比例最低;铜含量对热轧织构中{114}<110>和{001}<100>织构发展有显著影响。 The texture gradient in hot rolled grain oriented silicon steel strip is one of the essential factors to achieve a perfect secondary recrystallization.The addition of copper can significantly reduce the slab reheating temperature of grain oriented silicon steel,so as to impact the texture distribution in the hot rolled strip.The texture of hot rolled grain oriented silicon steel strip as-rolled by thin slab casting and rolling process(TSCR) in laboratory with three different copper contents was ... 
2011-01-28 82 5.8

对CSP流程生产的高磁感无取向电工钢50W1300在偏离轧制方向不同角度处的磁性能进行了测试和分析。结果表明:在偏离轧向不同角度处,磁性能差异显著,尤其在α=60°时磁感最低;偏离轧制方向不同角度处的磁性能大小取决于织构类型、强度及分布状态;增强{100}<0vw>和α、η取向的有利织构组分,降低不利的γ取向织构组分,且使有利织构组分分布越漫散,磁各向异性越小。 Magnetic properties of high magnetic induction non-oriented electrical steel 50W1300 produced by CSP processes were investigated with different direction in relation to the rolling direction.The result shows that magnetic properties are significantly different in relation to the rolling direction,in particular,the minimum magnetic induction occurs at 60° in relation to the rolling direction.Magnetic properties of different directions in relation to rolling direction depend on type and distributi... 
2011-04-28 76 5.8

本发明公开了一种轻便电动自行车轮毂电机用无取向电工钢及制造方法,属于无取向钢领域。针对现有小型电机无取向钢加工难度大,效率低的问题,本发明提供一种轻便电动自行车轮毂电机用无取向电工钢,包括如下重量百分比的各组分:Si:1.50%~3.00%;Als:0.50%~2.00%;Mn:0.20%~1.00%;P:0.01%~0.20%;C:≤0.005%S:≤0.03%;N:≤0.03%;Ti:≤0.005%,其余为铁和不可避免的杂质;其中C、S、N和Ti的重量百分比满足下式:C%+S%+N%+Ti%≤0.01%。本发明通过合理控制元素含量提高硅钢的延塑性,便于加工。本发明提供的制造方法降低卷绕铁芯中的涡流和磁滞损耗,同时能够避免钢卷表面氧化和表面氮化物析出,降低铁芯损耗,与现有同铁损级别无取向硅钢相比延伸率较高,后续冷加工性能更加优异。在保证优良性能的同时便于加工。
2021-03-29 47 6.8

对高牌号无取向电工钢35W300的成品进行了第二次退火,对第二次退火后的成品性能、纵横向磁性能差异和组织变化进行了分析。结果表明,随着第二次退火温度的升高,晶粒长大,磁性能优化。铁损平均值下降0.087 5W/kg,磁感平均值升高0.008T。第二次退火温度为820℃的产品的磁性能能够满足用户使用要求。 The product of high grade non-oriented electrical steel 35W300 was annealed at the second time.Microstructure,the difference of magnetic properties in the vertical and horizontal and were studied.The results show that the grain grew up and magnetic properties optimized with the increase of annealing temperature for the second time.Iron loss average declines in 0.0875 W/kg,magnetic induction average increases 0.008 T.The magnetic properties can meet the requirements of users at the second anneali... 
2013-04-28 69 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 52 5.8

本发明涉及一种含磷高磁感无取向硅钢的生产方法,工艺路线:铁水脱硫-转炉冶炼-RH精炼-连铸-热轧-酸洗-冷轧-连续炉退火-涂层-性能检验-包装,具体步骤包括:1)将钢水冶炼至目标成分后采用连铸方式将钢水铸成坯;2)热轧板坯加热炉均热段板坯温度950~1050℃,终轧温度控制在780~830℃,卷取温度600~680℃;3)酸洗后冷轧,控制冷轧整体压下率80%以上,至成品厚度,增加剪切带组织;4)连续退火炉快速加热段温度设定1000~1150℃,增加有利织构组织形核;均热段温度设定750~830℃,全氮气干气氛保护,退火工艺速度110~150m/min,满足晶粒度8~4级。本发明在减少硅、铝、锰合金添加量的情况下,改善铁损提高磁感性能,提高机械性能。
2021-08-19 58 6.8

对应用动态加热进行短时温度退火的取向电工钢进行了二次再结晶研究。所进行研究的实验用取向电工钢是经过终冷轧和后续罩式退火后的一条工业化生产线生产的。研究结果表明,运用短时热处理条件可引起研究钢完全的异常晶粒长大。在实验室处理的材料的织构和金相组织与工业化生产的经过终退火而获得的相同的取向电工钢类似。但是,在实验室处理的取向电工钢的二次再结晶的矩阵中可观测到\"寄生\"晶粒。从磁性观点看,这些\"寄生\"晶粒含有不理想的{111}取向织构。 The present study was made to investigate secondary recrystallization in grain-oriented steels annealed at short time temperature exposures with application of dynamical heating.The investigated GO(Grain Oriented) steels for experiments were taken from one industrial line after final cold rolling reduction and subsequent box annealing.It was shown that application of short time heat treatment conditions could lead to complete abnormal grain growth in the investigated GO steel.The texture and mic... 
2011-04-28 53 5.8

本发明公开了一种超高效变频空调压缩机用无取向硅钢薄带及其制造方法,属于无取向硅钢技术领域。本发明包括以下重量百分比的组分:C≤0.003%,Si:2.0%~2.5%,Mn:0.15%~0.5%,Als:0.3%~0.7%,Sn:0.05%~0.11%,S≤0.003%,P≤0.03%,B:0.002%~0.004%,Ca:0.003%~0.005%,N≤0.003%,Ti≤0.003%,其余为Fe及不可避免的杂质,且Mn/S比控制在20~60范围内,B/N比控制在0.7~1.5,Ca/S的比例≥1。为解决现有技术中存在的问题,本发明通过添加合金元素以及偏析元素,配合连铸、热轧、常化和连续退火等热处理工艺,以及优良的冷轧板形控制技术,实现0.30~0.35mm厚度薄规格的高效无取向硅钢产品,具备优异的磁性能和高屈强比的力学性能,满足高效变频空调压缩机电机磁性能和关节式定子高速冲裁对力学性能和板形的高标准要求。
2021-11-30 71 6.8

本发明涉及一种冷连轧法生产无取向高硅钢的方法,RH真空脱碳处理后,铝脱氧及部分铝合金化,合金化后大罐钢水净循环大于3次或大于5分钟;熔炼合格钢水至连铸开浇前静置时间大于二十分钟;控制过热度5~15℃;采用电磁搅拌,控制等轴晶比例45%以上;3)热轧工序板坯装炉温度大于750℃;常化使晶粒尺寸在90~110μm范围内;连续退火炉加热段温度设定950~1150℃,均热段温度设定900~1050℃,全氮气干气氛保护,控制晶粒尺寸120~170μm。生产全过程中的热履历参数控制,充分发挥设计的微合金元素功能,改变析出物的组成、大小、形态及分布。
2021-08-19 63 6.8

研究了采用高温卷取热轧态原料和常化态原料生产高牌号冷轧无取向电工钢组织、织构和磁性能。研究发现钢卷采用750℃高温卷取,下线后立即采用\"保温罩\"对钢卷进行保温,时间96h,然后空冷至100℃时上线生产的工艺可取代常化工艺生产高牌号冷轧无取向电工钢。冷轧上线前,热轧态原料的表层为大量的再结晶组织,这部分组织包括了热轧轧制时保留下来的动态再结晶组织,钢卷本身高温回复后产生再结晶晶粒,以及在保温罩内保温时形成的再结晶组织。高温卷取的热轧态和常化态的热轧卷作为原料时,试样织构类型相似,取向分布密度接近,再结晶后织构类型仍然相似,取向分布密度仍然接近。Goss织构对磁性能增加有促进作用。实验钢中较好的磁性能对应的织构[{100}+Goss]/{111}的比值较高,体现了织构的遗传性。 Microstructure,texture and magnetic properties of high grade cold rolled nonoriented electrical steel which made of hot rolled material with high temperature coiling and with normalization were studied.Steels coiled in high temperature(at 750 ℃),stacked with insulation cover for 96hand air cooled to 100 ℃ were using to manufacture high grade nonoriented electrical steel.The process can replace the normalization process.There are a lot of recrystallized grains in the surface layer of the coil wit... 
2014-03-28 61 5.8

本发明涉及一种含磷无铝高效无取向硅钢生产方法,生产方法取消常化工艺,具体步骤如下:1)将钢水冶炼至目标成分后,浇铸成坯;2)板坯热装,热装温度≥500℃,热轧板坯加热炉均热段板坯温度1150~1200℃;终轧温度控制在860~930℃,卷取温度700~800℃3)酸洗后冷轧,控制冷轧整体压下率80%以内,至成品厚度;4)连续退火炉快速加热段温度设定1050~1180℃,增加有利织构组织形核,均热段温度设定830~950℃,全氮气干气氛保护,退火工艺速度120~150m/min,满足晶粒度8~4级。本发明不需进行热轧卷常化处理,降低了制造成本。
2021-08-19 69 6.8

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