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一种基于临界变形制备高强度无取向电工钢的方法,按以下步骤进行:(1)按电工钢成分真空精炼钢水,连铸制成连铸坯;(2)在900~1100℃热处理30~120min,然后热轧制成热轧板;(3)冷轧冷轧板;冷轧板厚度为目标厚度+(0.01~0.1)mm;(4)在400~700℃进行一次退火处理,在850~1200℃进行二次退火处理;(5)酸洗去除氧化层,然后进行温轧或二次冷轧进行临界变形。本发明的方法利用位错强化机制采用临界变形提高无取向电工钢的强度的原理,利用一次退火二次退火进行一次调控织构并临界变形对织构二次调控的方法增加对磁性能有利的再结晶织构来优化磁性能,该生产方式工艺简单,成本较低,生产效率高,适用于大批量生产。
2021-01-11 217 6.8

针对宝钢集团、日本新日铁住金和JFE公司公开的相关专利等资料,总结了国内外高强度无取向电工钢的研究进展,分析了不同电工钢的化学成分、生产工艺及产品性能,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,并阐述了四种强化方式的优缺点;指出在高强度无取向电工钢的研发过程中,需根据其具体用途确定目标性能,再采用合适的强化手段,最终实现力学性能、磁性能和生产性能之间的平衡。 The research progress of high strength non-oriented electrical steels at home and abroad is summarized according to related patents brought into the public by Baosteel,Nippon Steel & Sumitomo Metal corporation and JFE corporation.The characteristics of chemical composition,production technology and properties of products in the patents are analyzed.Each of solution strengthening method,fine-grain strengthening method, precipitation strengthening method or dislocations strengthening method ma... 
2014-04-28 217 5.8

本发明公开了一种基于硅钢服役特性的立体卷铁心单框损耗测量方法及系统,根据硅钢片在立体卷铁心中的服役特性,获得测量铁心单框所需的非正弦励磁电压波形,通过所述立体卷铁心的心柱绕组电压和单框绕组电压之间的关系,确定所述被测立体卷铁心单框所需的电压有效值,再通过计算机、数据采集卡D/A转换器、功率放大器、隔离变压器和示波器,直接在所述立体卷铁心单框上加载励磁电压,利用功率表测量立体卷铁心单框损耗。本发明利用硅钢的服役特性,获得测量立体卷铁心单框所需的非正弦励磁电压波形和电压有效值,再将励磁电压直接加载到被测立体卷铁心单框,测量立体卷单框铁心损耗。
2021-08-31 217 6.8

根据本发明的一个实施例的双取向电工钢板,具有从{100}<001>起15°以内的取向的晶粒的分数为50至75%,并且具有从{100}<380>起15°以内的取向的晶粒的分数为50至75%。
2020-12-17 217 6.8

通过对3%Si CGO硅钢进行恒变形速率、不同变形温度下的单道次压缩实验,结合Thermal-Calc软件,金相分析,SEM及EBSD技术,研究了取向硅钢热变形过程中组织和微观织构的变化规律。结果表明:实验钢是在双相区变形,变形后组织主要是铁素体和少量的珠光体。随变形温度的升高,晶粒由长条状变为等轴状,尺寸逐渐变大;CGO硅钢在热变形过程中立方{100}<001>取向是较为稳定存在的。随着变形温度的提高,{111}<110>等取向逐渐转向{110}<1 10>取向,且{110}<1 10>取向逐渐变得锋锐。 3% Si CGO silicon steel was studied at constant strain rate and different deformation temperatures by single-pass compression deformation experiments to reveal the evolution of microstructure and texture during thermal deformation in oriented silicon steel,and the Thermal-Calc software,metallurgical,SEM and EBSD technique was used in the experiment. The results show that experimental steel is deformed at the temperatures of two-phase zone. The microstructure of the deformed steel consists of fer... 
2014-05-28 216 5.8

本实用新型涉及变压器铁芯装配技术领域,具体公开了一种硅钢片铁芯的装配工装,包括底座、对称设于底座上的两个承压条以及快速装夹机构;所述快速装夹机构包括设于两个承压条一侧的安装框架、安装于安装框架两侧的侧挡板、紧固组件以及将安装框架和承压条之间定位的卡接组件;所述卡接组件包括安装于安装框架一侧的定位块、以及开设于承压条一侧的定位槽,所述定位块的内部开设有安装槽,本实用新型通过快速装夹机构能够实现安装框架的快速定位,从而便于安装框架的安装,有效的提高了安装框架的拆装效率,有助于硅钢片铁芯的快速装配,可提高硅钢片铁芯的装配效率,增加硅钢片铁芯的生产效益。
2021-09-09 216 6.8

从取向硅钢生产路线的选择、工艺技术的改进和生产设备的改造三方面进行了生产取向硅钢的节能降耗技术改造.通过完善多元抑制剂配方生产低温取向硅钢,通过加抛丸的酸洗、带面超声波清洗、改进连续退火炉以及余热循环利用等技术改造,使2012年取向硅钢的产量与未进行技术改造前的2009年相比提高了2.5倍,产品磁性上升了一个半牌号,能耗下降了8.9%,成材率提高了6.4%,生产成本下降了22%,综合效益显著. Energy saving technological transformation was carried out in the production of grain oriented silicon steel from three aspects of the oriented silicon steel production process route selection,technology improvement and equipment renovation.Through the improvement of multiple inhibitor formulations for producing low-temperature grain-oriented silicon steel,and by adding the blasting pickling,the belt surface ultrasonic cleaning,improvement of continuous annealing furnace,waste heat recycling tec... 
2013-02-28 216 5.8

利用EBSD技术研究了电工钢中长轴平行于轧向的柱状晶样品在热轧和退火过程中组织和取向的演变规律,并与长轴平行于板法向的样品的已有研究结果进行对比。结果表明,无论柱状晶按何种方向排列,只要表面存在剪切力,热轧后都可形成剪切织构,同时中心形成轧制织构,主要包括旋转立方织构和{112}<1-10>。柱状晶造成的影响主要体现在板中心层,长轴平行于轧向排列的样品热轧时形成的粗大旋转立方晶粒要到脱碳退火后才能完全消除,但破坏了正常的不同取向晶粒间的取向差分布及尺寸均匀性,导致二次再结晶不完全及磁性能降低。 The evolution of microstructure and grain orientation in an electrical steel containing columnar grains with its long axis being parallel to the rolling direction of sheet was studied during hot rolling and annealing by EBSD technique.The results are compared with those of samples containing columnar grains being parallel to normal direction of sheet reported in the reference [3].It was shown that,whether the long axis of columnar grains was arranged in RD or ND,shear textures can be formed in t... 
2011-02-28 216 5.8

取向硅钢因其高磁导率、低矫顽力和大电阻系数等特性,被广泛应用于大中型变压器和大型电动机铁芯的制造。因取向硅钢性能和成分控制严格,生产工艺复杂,故其产品代表了钢铁企业特殊钢生产的最高水平。本文介绍了新钢公司卷板厂1580热连轧线生产取向硅钢过程中出现的窄尺问题,研究了取向硅钢产品的特点,分析了热轧过程中的组织转变,并结合生产实际提出了改进措施。通过对加热炉钢坯加热模式、粗轧轧制策略、精轧轧制工艺、二级模型等方面的优化和改进,取向硅钢窄尺情况明显好转,提高了产品的成材率和市场口碑。 The oriented silicon steel is widely used in the iron core manufacture of large and mediumsized transformers and large motors because of its high permeability, low coercivity and large resistance coefficient. Due to the performance and composition control of oriented silicon steel is strict, the production process is complex,therefore, its products represent the highest level of special steel production in iron and steel enterprises. This paper introduces the problem of narrow gauge in the produ... 
2022-06-28 216 5.8

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... 
2014-03-28 216 5.8

本发明涉及一种电力变压器取向硅钢片自动化加工系统,包括支撑台、支撑板、传动机构、堆叠机构和调整机构,所述的支撑台上端左右两侧对称设置有支撑板,支撑板相对面设置有传动机构,支撑台上端中部设置有堆叠机构,支撑台上端面上且位于堆叠机构左右两侧对称设置有调整机构;本发明能解决以下问题:本发明通过传动机构对硅钢片前后移动,通过推动支链对硅钢片移位、放置、拿取,增加对硅钢片进行自动化堆叠效果;通过调整机构对硅钢片X方向面和Y方向面进行感应式自动调整;通过堆叠机构对硅钢片二次调整,避免硅钢片发生移动,从而使硅钢片堆叠的更加整齐,并且节约制造成本。
2021-04-09 216 6.8

通过制备磷酸二氢铝硅钢涂层,研究了氧化锌对无铬涂层耐盐雾性能、电化学性能和附着性的影响。结果表明,硅钢表面涂层含有4.0%的氧化锌时,涂层具有最高的耐腐蚀性能和电化学性能,而且其致密表面最为平整,没有裂纹出现。 The effects of ZnO on the salt spray resistance property, electrochemical performance and adhesiveness of silicon steel insulating coating were studied. The results show that the best corrosion resistance and electrochemical properties can be obtained when the coating contains 4.0% oxide zinc, and the dense surface is smooth without cracks. 
2014-07-28 216 5.8

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