钢厂
新日铁高强度无取向电工钢的研究进展
针对新日铁公开的相关专利,总结日本高强度无取向电工钢的研究进展,分析了各专利化学成分、生产工艺及产品性能的特点,指出固溶强化、细晶强化、析出强化、位错强化都有可能被用来提高无取向电工钢的强度。在高强度无取向电工钢的研发过程中,需要根据其具体用途确定目标性能,再采用合适的强化手段,从而实现力学性能、磁性能和生产性能之间的平衡。 Authors summarize the research progress of high strength non-oriented electrical steel in Japan by learning related patents brought into the public by Nippon Steel. Authors also analyze the characteristics of the chemical composition, production technology and properties of products in the patents and point out that any ones of solution strengthening method, fine-grain strengthening method, precipitation strengthening method or dislocations strengthening method may be used to improve the strengt...
CN202180042673.1电磁钢板用涂布组合物、电磁钢板、层叠铁芯及旋转电机
用于层叠铁芯的电磁钢板为一种电磁钢板,其在母材钢板(2)的表面,具有涂布电磁钢板用涂布组合物而成的绝缘被膜(3),所述电磁钢板用涂布组合物含有环氧树脂、环氧树脂固化剂、以及弹性体改性酚醛树脂,所述弹性体改性酚醛树脂的含量相对于所述环氧树脂100质量份,为10质量份以上100质量份以下。
CN202210629691.6退火隔离剂的制备方法以及退火隔离剂和方向性电磁钢板
本发明提供退火隔离剂的制备方法以及退火隔离剂和方向性电磁钢板。由该方法得到的退火隔离剂纯度高、分散性以及密接强度优异,可以在方向性电磁钢板表面形成均匀致密的镁橄榄石层。退火隔离剂的制备方法,其包括:工序(1):将氧化镁和铵盐溶液混合并反应,制备镁盐溶液和氨,然后使精制的镁盐溶液与氨反应而得到氢氧化镁;工序(2):将得到的氢氧化镁的一部分在155~230℃下高温熟化,并且将得到的氢氧化镁的另一部分在10~100℃下低温熟化;工序(3):将在上述各条件下熟化的氢氧化镁混合、烧成,得到氧化镁用于退火隔离剂。
锡或锑在无取向电工钢中的研究进展
近年来,在节能减排背景之下,国内外众多研究者对无取向电工钢磁性能的提升做了大量研究。为了探索无取向电工钢磁性能提升的方法,对锡或锑对无取向电工钢磁性能的作用机制(晶粒尺寸和晶体织构的控制)进行分析。基于该作用机制,介绍锡或锑的添加对无取向电工钢磁性能的影响。经研究发现,适量的锡或锑在晶界偏聚,不会阻碍晶界的移动并且致使晶粒尺寸降低;与此同时,锡或锑在晶界偏聚不仅抑制{111}织构在原始晶界处形核及生长,还降低(100)晶粒表面能,促进(100)晶粒生长。因此,适量添加锡或锑,可使无取向电工钢铁损下降、磁感提升。最后结合生产工艺,建议无取向电工钢的研究方向应为稀土含量对高牌号无取向硅钢夹杂物尺寸和数量分布的影响,锡或锑的添加量和常化工艺参数(常化时间、常化温度)对常化晶粒尺寸的影响。 In recent years, due to the background of energy saving and emission reduction, numerous researchers all around the world have done a lot of investigations on the improvement of magnetic properties for non-oriented electrical steel. In order to explore the method of improving the magnetic properties of non-oriented electrical steel, the mechanism of tin or antimony on the magnetic properties(the control of grain size and crystallographic texture) of non-oriented electrical steel is illuminated. ...
CN202110353631.1一种硅钢轧制系统
本发明公开了一种硅钢轧制系统,包括:轧机组,所述轧机组包括M架轧机,用于轧制硅钢,所述M架轧机的前N架轧机的轧辊为高速钢轧辊,其中,M、N为正整数;硅钢检测装置,位于所述轧机组最后一架轧机的出口处,用于对出口硅钢的参数信息进行检测;控制器,与所述硅钢检测装置通信连接,用于在所述参数信息不满足预设参数条件时,控制所述轧机组停止工作;磨床,用于在所述轧机组停止工作后,对所述N架轧机中的每架轧机进行辊形精度检测,对不满足预设辊形精度范围的轧辊进行磨削。
CN202110623633.8一种冷轧取向电工钢钢带的渗氮处理工艺
本发明涉及电工钢生产技术领域,具体涉及一种冷轧取向电工钢钢带的渗氮处理工艺,旨在解决现有技术渗氮速度慢,渗氮效果不佳,能耗大,生产周期长的问题,包括以下步骤:S1、经过冶炼、连铸后,对铸坯进行热连轧、常化酸洗、冷轧及脱碳退火的工序;S2、在渗氮炉内进行两段渗氮处理:S21、第一段渗氮处理的渗氮温度为750‑950℃,渗氮时间为25‑35s,另外,渗氮介质的喷射压力为0.15‑0.25MPa,渗氮介质的流量为5‑20NL/min;S22、经稀土溶液浸泡1‑2小时后,继续第二段渗氮处理,其渗氮温度为460‑560℃,渗氮时间为10‑25s,另外,渗氮介质的喷射压力为0.15‑0.25MPa,渗氮介质的流量为1‑10NL/min;S3、涂隔离剂、高温净化退火后得到成品。
Nb微合金化Fe14Si2高硅钢温轧板织构演变规律
采用Nb对Fe-6.5%Si(质量分数)高硅钢进行微合金化处理,结果表明:Nb在高硅钢薄板制备过程中细晶效果明显.铸态、锻态和热轧态组织的晶粒分别细化了17.50%,24.51%和30.13%.铸态样品压缩强度由1365 MPa提高至1520 MPa,延伸率提高77.78%;温轧板试样室温拉伸强度由573 MPa提高至621 MPa,延伸率提高44.44%.利用XRD对厚度为0.30—1.68 mm的温轧板的板面织构演变过程进行跟踪测量,结果发现:初始织构以(011)〈100〉Goss织构为主,单道次变形量为26.2%的情况下,Goss织构完全转化为(100)〈011〉旋转立方织构,随后,在单道次变形为22.6%的情况下,旋转立方织构完全转化为{111}面织构,即纤维织构,并稳定保持至0.30 mm. Fe-6.5%Si(mass fraction) alloy possess perfect magnetic properties,though intermetallics of Fe14Si2 phase brought 6.5%Si leads to room temperature brittleness and hinder this significant materials industrialization.Nb was adopted into micro-alloying of Fe-6.5%Si high silicon steel. OM,thermal simulated test machine and XRD were employed to study the influence of Nb on high silicon steel in processing stages.Textures of warm-rolled high silicon steel strips were determined b...
微量Sn对0.4%Si无取向硅钢组织和磁性能的影响
结合实际生产0.4%Si无取向硅钢,统计了不含Sn和0.025%Sn无取向硅钢的磁性能变化,利用金相显微镜、X射线衍射仪观察分析不同成分下试样的显微组织和微观织构。试验结果表明:Sn元素可以显著降低无取向硅钢的晶粒尺寸,0.025%Sn试样的平均晶粒尺寸比不含Sn减小28.4%;加入Sn元素后抑制了无取向硅钢中不利于磁性能的{111}面织构组分强度,提高了对磁性能有利的{100}面织构组分强度,0.025%Sn与不含Sn相比磁感均值从1.756 T提升至1.768 T,铁损均值从5.476 W/kg降低至5.204 W/kg,明显改善了无取向硅钢磁性能。 In this paper combined with the actual production of 0.4% Si non oriented silicon steel, the magnetic properties of non oriented silicon steel without Sn and 0.025% Sn were counted. The microstructure and microtexture of samples with different compositions were observed and analyzed by metallographic microscope and X-ray diffraction. The results show that: Sn can significantly reduce the grain size of non oriented silicon steel, and the average grain size of 0.025% Sn sample is 28.4% smaller tha...
CN202080097258.1无取向电工钢板及其制造方法
根据本发明的一个实施例的无取向电工钢板,以重量%计,所述钢板包含Si:2.2至4.5%、Mn:0.5%以下且0%除外、Al:0.001至0.5%、Sn:0.07至0.25%和N:0.0010至0.0090%,余量包含Fe和不可避免的杂质。所述钢板包含从钢板表面向内存在的表层部和存在于表层部里面的中心部,中心部包含0.005重量%以下的N,所述表层部比中心部更包含0.001重量%以上的N,表层部的平均晶粒粒径为60μm以下,中心部的平均晶粒为70至300μm。
钒钛对取向硅钢组织、织构和析出物的影响
通过在实验室条件下模拟薄板坯连铸连轧流程,并在以Cu2S为主抑制剂制造普通取向硅钢(CGO)的基础上,加入适量钒钛,研究了钒钛对取向硅钢组织与磁性能的影响。结果表明,适量钒钛使热轧板和脱碳退火板组织更好,尤其使脱碳退火板的晶粒更加细小和均匀;加入适量钒钛不但使热轧板表面高斯织构强度更高,更使脱碳退火板中有利于高斯织构发展的γ织构强度更高;适量钒钛能形成Cu2S+(V,Ti)N等复合析出物,起到辅助抑制剂作用,加强抑制能力。细小均匀的晶粒、强度更高的有利织构和更强的抑制能力使CGO钢磁性能更佳。 Effect of V and Ti on microstructure and magnetic properties of conventional grain-oriented silicon steel(CGO) were investigated under simulated thin slab continuous casting and rolling process in laboratory with Cu2 S as the dominant inhibitor. The results show that appropriate amount V and Ti make the microstructures of the hot rolled sheet and the decarburizing annealed sheet better,especially make the grains of the decarburizing annealed sheet more tiny and uniform. Adding appropriate V and ...
低温高磁感取向硅钢高温退火过程高斯晶粒的演变
对低温加热工艺生产的以AlN为主抑制剂的高磁感取向硅钢高温退火过程进行中断实验,借助电子背散射衍射技术对高温退火过程中高斯晶粒的演变进行了研究.在升温过程中高斯晶粒平均尺寸先减小再增大.800℃时取向分布函数图出现高斯织构组分,但强度很弱,高斯晶粒偏离角在10°以上;900℃时高斯晶粒平均生长速率超过其他晶粒;950~1000℃时高斯晶粒异常长大,偏离角3°~6°;在1000℃之前高斯取向晶粒相比于其他晶粒没有尺寸优势. The high-temperature annealing process of high permeability grain-oriented silicon steel with AlN as an inhibitor was studied by interrupting test.The evolution of Goss texture in this process was analyzed by electron back-scattered diffraction.It is found that the Goss grain size first decreases and then increases with the rise of temperature.Goss texture appears in the orientation distribution function at 800 ℃,but the intensity is very weak and the deviation angle is more than 10°.The average...
后天抑制剂获得法制取向硅钢析出物的转化规律
通过后天抑制剂获得法制备了取向硅钢,对渗氮前后和高温退火升温阶段析出物的析出和转化规律进行了研究。研究结果表明,渗氮前脱碳退火态基体中存在少量的粗大AlN颗粒和细小AlN颗粒,渗氮处理后新析出大量的Si3N4析出物,高温退火升温阶段Si3N4将转化为(Al,Si)N,随着温度的继续升高(Al,Si)N颗粒将发生粗化,(Al,Si)N是后天抑制剂获得法制备取向硅钢的主要抑制剂。 Grain-oriented silicon steels were produced by acquired inhibitor method.The rule of precipitate transformation was studied after nitriding treatment and high-temperature finishing annealing.The results show that a small amount of large AlN and fine AlN are found in matrix before nitriding treatment,and a large amount of Si3N4 is precipitated in matrix after nitriding treatment.During the temperature rising period of high-temperature finishing annealing,Si3N4 would transform into(Al,Si)N,and(Al,...

