钢厂
CN202111083171.1一种高强型高频电磁性能优异的硅钢薄带板及生产工艺
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。
CN202110404874.3一种解决取向硅钢热轧板晶粒粗大的方法
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。
无取向电工钢孔洞缺陷控制实践
针对马钢无取向电工钢孔洞缺陷的分布规律及形貌特征,对缺陷样进行了显微分析,并利用生产实绩数据分析了该缺陷产生的原因。结合热轧生产过程,主要通过避免带钢撞击导卫以及降低导卫结瘤的产生等措施,可有效抑制热卷异物压入产生,从而降低冷轧工序孔洞的产生。 In viewing of the distribution and morphology characteristics of the hole defect of non-oriented electrical steel in Maanshan Iron and Steel Co.,Ltd.,the causes of the defect were analyzed by micro analysis of the defect sample and the production data.Combined with the production process of hot rolling,by avoiding the impact of strip steel on the guide and reducing the nodule formation on the guide,the pressing of foreign bodies in hot coiling could be effectively suppressed,thus reducing the fo...
120t转炉冶炼无取向硅钢脱硫技术研究
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 ...
铜含量对TSCR工艺生产取向硅钢热轧织构的影响
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 ...
CN202110818854.0一种超高磁感无取向硅钢及其制造方法和在汽车发电机生产中的应用
本发明提供了一种超高磁感无取向硅钢及其制造方法和在汽车发电机生产中的应用,成分:C:≤0.005%、Si:0.5‑1.2%、Mn:0.1‑0.5%、P:0.01‑0.1%、S:≤0.004%、Al:≤0.005%、N:≤0.005%、Ti:≤0.003%,余量为铁和不可避免的杂质。通过成分设计,配合CSP薄板坯连铸连轧工艺、常化工艺,不用添加贵金属元素,不添加贵金属元素,流程短、成本低、磁感高、性能稳定;节省成本的同时,具有优良的磁性能,采用本发明生产的汽车发电机铁芯,与常规产品生产的铁芯相比,重量可减轻15%以上,缩小了发电机尺寸,满足汽车发电机小型化、高效化的要求。
CN202110332173.3一种轻便电动自行车轮毂电机用无取向电工钢及制造方法
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。
国外采用板坯低温加热工艺生产Hi-B取向电工钢最新进展
根据新日铁、JFE及浦项等国外钢铁公司2008年以来在日本专利局、欧洲专利局(EP)及世界知识产权组织(WIPO)申请公开的有关生产Hi-B取向电工钢典型专利技术,概述了近年来国外大型钢铁企业采用低温板坯加热(坯加热温度<1 280℃)技术生产Hi-B取向电工钢主要技术重点,即将调节关键化学成分Al、N、Sn及Sb等与工艺改进相结合。最后介绍了国外大型钢铁企业采用低温板坯加热技术生产Hi-B取向电工钢实例。 The latest developments on technology for manufacturing Hi-B grain oriented electrical steel sheets developed by Nippon Steel Corp.,JFE Steel and POSCO were described according to the patents published by World Intellectual Property Organization,Japan Patent Office and European Patent Office over the recent years.The low temperature slab heating process(particularly slab-heating temperature<1 280 ℃) together with suitably adjusting key chemical elements such as Al,N,Sn and Sb elements was the...

