无取向电工钢的生产现状及发展

简要回顾了无取向电工钢的发展历程。重点分析了无取向电工钢生产过程中的难点和重点。分析和论述了无取向电工钢的工艺发展现状与趋势。     

无取向电工钢涂层发展及环保型涂层技术进展

介绍了无取向电工钢绝缘涂层技术发展过程,重点分析了无取向电工钢生产中所使用的含铬涂液中的六价铬对环境和人体的危害,进一步对比了现有无取向电工钢环保型涂液和含铬涂液的性能,表明当前推广应用环保型涂层具有必要性和可行性。     

国内主要企业电工钢的发展对马钢电工钢研究的启示

结合国内几家电工钢企业的生产现状、电工钢的发展战略趋势,分析阐述了马钢未来发展取向硅钢、高磁感取向硅钢(Hi-B钢)、薄规格高磁感取向硅钢、高牌号无取向电工钢和新一代低铁损高磁感无取向电工钢的必要性和可行性。     

高性能电工钢的推广应用分析与研究

近年来,国内电工钢受市场需求拉动和多种因素的驱动,冷轧电工钢产能高速发展,在热轧硅钢尚未完全淘汰的情况下,出现了品种结构不平衡的产能过剩和高牌号无取向及取向电工钢也将面临供大于求的局面。在这种情况下,国家提出高性能电工钢的推广应用是非常必要的,作为行业协会（学会）和电工钢生产、使用等企业应引起高度重视,认真学习工信部下发的《高性能电工钢推广应用工作方案》的通知（以下简称“通知”）,在实际工作中加大推进力度。重点从电工钢产业现状,主要问题、推广重要性、“通知”的解读、建议进行分析与研究。     

基于多元抑制剂的取向电工钢生产技术的研究及应用开发

取向电工钢是国家鼓励加快发展的电磁合金材料.通过对国内外现有取向电工钢生产工艺技术的分析研究,提出了一种工艺简单、易于控制、生产成本低的取向电工钢生产技术方案,并介绍了该技术的应用开发情况.     

快速加热对无取向电工钢磁性能的影响

测定了两种元取向电工钢经快速加热后的总体磁性能，发现全工艺元取向工钢的磁性能发生恶化，而半工艺元取向电工钢的磁性能则有所改善。快速加热过程中发生晶粒长大与熟应力现象，二者的竞争对电工钢磁性能的影响是本文探讨的重点所在。     

高磷低硅(无硅)电工钢试验研究

一、概述电工钢是发展国民经济不可缺少的工业材料,按发展电量计算,每增加100度电必须相应增加1公斤电工钢用来制造电动机、发电机和变压器等。目前世界各主要工业国的电工钢产量均占其钢总产量的0.86％左右。电力工业所用的电工钢,一般分为冷轧取向电工钢和无取向电工钢两大类。一般来说,冷轧取向电工钢是一种含硅量为3％左     

影响冷轧无取向电工钢磁性能检验结果的因素

随着我国电机行业快速发展,冷轧无取向电工钢的需求量逐年增加,针对这一现状对冷轧无取向电工钢磁性能检验结果进行分析,其中包括制样设备、环境温度、试样尺寸、试样重量、试样密度、检验设备等。分析结果表明:冷轧无取向电工钢随着剪切次数、质量、密度增加,铁损都增大,磁感都降低;随着环境温度升高,铁损和磁感降低。分析影响冷轧无取向电工钢磁性能检验结果的因素,对提高检验结果的精确度具有重要意义。     

稀土在电工钢中的应用研究现状与发展前景

稀土在钢铁中发挥着独特而不可替代的重要作用,近年来,无论是基础研究领域还是应用领域,稀土钢都得到迅速发展,尤其稀土电工钢成为热门研发钢种,但目前相关研究仍处探索阶段,亟需开展系统、深入的研究工作。在分析近年来稀土在电工钢中的研究成果基础上,归纳和总结了现代技术条件下稀土在电工钢中的应用、研究现状以及稀土元素在其中的作用规律和影响机理,分别探讨了稀土在常规无取向电工钢、取向电工钢以及Fe-6.5%Si高硅电工钢中的应用。大量研究表明,在电工钢中添加稀土可以显著改善电工钢的磁性能、力学性能、织构等,在提高电工钢磁性能和力学性能方面具有广泛的应用前景,凭借中国特色资源优势发展稀土电工钢具有重要学术价值和现实意义。     

我国电工钢生产消费现状及需求预测

含硅量在0.5%～4.5%的超低碳硅铁合金称为电工钢,俗称硅钢,主要用做电机、发电机和变压器的铁芯,广泛应用于发电、输变电、电机、电子和家电业。按生产工艺不同,电工钢可分为热轧电工钢和冷轧电工钢。热轧电工钢属于无取向电工钢,冷轧电工钢又分为无取向电工钢和取向电工钢。     

薄规格取向硅钢剪切研究进展

近年来取向硅钢向着薄规格、低铁损方向发展,增加了后续产品剪切的难度。本文对薄规格取向硅钢剪切特点进行了分析,对相关的研究进行了综述,并结合宝钢取向硅钢EVI经验,对薄规格取向硅钢剪切常见缺陷进行了分析。     

Application status and development prospect of rare earth in electrical steels

Rare earth(RE) plays a unique and irreplaceable important role in iron and steel.The developments in both basic research and application of RE steel are rapid in recent years.Especially, RE electrical steels attracts more and more attention.However, the relevant research is still in the exploration stage, and it is urgent to carry out systematic and in- depth research work. Based on the recent research results about the application of RE in electrical steels, the research status of RE in electrical steels under modern technical conditions and the effect mechanism of RE in electrical steels were summarized. The application of RE in conventional non- oriented electrical steels, grain- oriented electrical steels and Fe- 6. 5 mass% Si high- silicon electrical steels were discussed respectively. A large number of studies show that the addition of RE in electrical steels can significantly improve the magnetic properties, mechanical properties and texture of electrical steels.There is a broad application prospect of RE in the improvement of magnetic and mechanical properties for electrical steels, and the development of RE electrical steels with Chinese resources?? characteristics has an important academic value and a practical significance.     

Effects of Sn Addition on Core Loss and Texture in Non-oriented Electrical Steels

 The effects of Sn addition on core loss and texture of non oriented electrical steels were investigated. Experiments revealed that the core loss of non oriented electrical steels could be obviously decreased and the intensity of {111} texture and {112} texture of final annealed specimens could be markedly reduced by Sn addition. The reasons for reducing core loss and the intensity of unfavorable texture were analyzed.     

宝钢低铁损取向硅钢在变压器新能效标准下的应用

随着变压器新能效标准GB 20052-2020的正式实施，变压器各能效等级普遍提升，也推动取向硅钢产品等级的提高。本文结合新能效标准，针对宝钢低铁损取向硅钢产品应用实绩，给出选材建议，并针对产品使用过程中存在的问题进行剖析，以期对变压器制造厂家选材和使用起到参考作用。     

CSP工艺生产高牌号无取向电工钢的组织和夹杂物

 首次实现了从冶炼→CSP→常化→冷轧退火→成品检测等CSP工艺生产高牌号无取向电工钢的实验室全工序过程模拟,并对铸坯、热轧板及冷轧板中的组织及夹杂物进行了具体分析。结果表明,CSP工艺生产高牌号无取向电工钢是可行的;成品磁性能满足国际标准要求;薄铸坯、热轧板、成品板组织具有典型高牌号无取向电工钢组织特点;过程析出物主要为：AlN,AlN+MnS。     

Effect of Hot Band Annealing on Magnetic Properties in 3% Si Grain‐oriented Electrical Steels

Hot band annealing is known to be a prerequisite for good magnetic properties irrespective of manufacturing methods in grain‐oriented Fe‐3 wt.% Si electrical steels. In this study, the effects of hot band annealing on magnetic properties were investigated in 3% grain‐oriented electrical steels of low soluble AI contents and one‐stage cold rolling. Microstructure and precipitate distribution were compared with hot band annealing conditions. Secondary recrystallization behaviour with hot band annealing condition was also discussed.     

Influence of Temperature Evolution on Precipitation Behaviour of Second Phase Particles in Grain‐oriented Electrical Steels

A model concerning dynamic precipitation of second phase particles during hot deformation of conventional grain‐oriented electrical steels is proposed. The model involves the solid solubility of the elements forming MnS, the corresponding nucleation driving force, as well as the evolution of dislocation densities during hot deformation, which supplies sites for heterogeneous nucleation of MnS particles. The model describes the dynamic process in which temperature keeps decreasing and dislocation density keeps increasing. The influences of reheating temperature, initial rolling temperature, finishing temperature and deformation duration on the precipitation behaviour are involved. Calculations have been conducted based on the model, to simulate the precipitation behaviour of MnS particles during hot rolling of grain‐orientated electrical steels under different parameters. The results indicate that hot rolling is very important for dispersive precipitation of MnS particles. The increase of particle density is promoted by proper increase of reheating temperature or proper reduction of initial and finishing rolling temperature, in which the driving force and dislocation density are increased. The simulation results agree basically with the experimental observations in hot strip of a grain oriented electrical steel.     

新能源车驱动电机用电工钢用量解析计算及预测方法

对新能源汽车以及驱动电机的现有市场和未来市场规模进行梳理分析,通过自建计算公式推导出我国2021年1-11月份驱动电机用电工钢的总量,进而预测未来10年中国新能源汽车驱动电机用电工钢情况,为无取向电工钢的生产和在电机中的应用提供有价值的参考。     

电机用取向电工钢设计与应用技术研究

针对高性能电机日益严苛的转矩密度、效率等指标问题,传统软磁材料的性能已发挥到极致,探索和应用新型软磁材料是提高电机性能的重要途径。本文提出将沿轧制方向上具有高磁感、低铁损的取向电工钢应用到永磁同步电机的定子齿部的设计,并与传统的无取向电工钢电机进行了对比分析。相比传统材料电机,取向电工钢电机转矩可提升3.4 %,铁损可降低18 %,且电机整体效率有所提升。为取向电工钢软磁材料在高性能电机中的应用奠定了基础。