硅钢资料

利用光学显微镜、TEM和EBSD研究了退火温度对双辊连铸无取向硅钢再结晶组织的影响。结果表明,900℃退火后组织分布不均匀,有大量带状组织,平均晶粒尺寸29.5μm。提高退火温度,晶粒尺寸增大,组织均匀化程度增加,1050℃退火时,带状组织基本消失,平均晶粒尺寸42.2μm。 Effect of annealing temperature on recrystallization microstructure of non-oriented electrical steel produced by twin-roll casting process was investigated using OM,TEM and EBSD.The results show that the recrystallization microstructure is uneven because of many banded grains existing,average grain size is 29.5 μm.With annealing temperature increasing,the recrystallization grain size increases,microstructure becomes more homogeneous.When 1050 ℃ annealing,the banded structure almost disappear and... 

本实用新型公开了一种变压器铁芯硅钢片叠装对齐工装，包括叠装平台、定位板、推齐板和下压板；定位板和推齐板分别位于叠装平台的两侧，下压板位于叠装平台的上方；定位板用于对铁芯长度或宽度侧进行定位；推齐板平推铁芯使各硅钢片抵靠定位板而对齐；下压板下压铁芯使各硅钢片叠装紧密。本实用新型提供的一种变压器铁芯硅钢片叠装对齐工装，能够提高铁芯生产精度，并提高硅钢片叠装效率。

冷轧中中低牌号的无取向硅钢多采用万能凸度轧机(Universal crown mill,UCM)生产,其板形好坏受制于UCM轧机板形调节手段的协调使用。为掌握UCM轧机的板形控制特点,建立基于二维变厚度有限元的辊系弹性变形和基于三维差分的轧件塑性变形的六辊轧机耦合模型,对UCM轧机的板形调控性能进行详尽的分析,包括工作辊和中间辊弯辊、中间辊窜辊的调控功效、辊间接触压力分布等。在此基础上,提出可用指导生产的板形控制策略,指出UCM轧机在横向厚差控制方面的不足。针对工业生产中UCM轧机轧制无取向硅钢横向厚差大的问题,在大量仿真计算的基础上,开发具有高次曲线函数的边部变凸度(Edge variable crown,EVC)的工作辊。采用该工作辊后,各种品种的无取向硅钢的横向厚差不大于10μm的百分比由24%提高到99%,横向厚差的均值小于6μm,远小于之前的13μm。 Medium-low grade non-oriented silicon steel is rolled often by universal crown mill(UCM) during cold rolling.Its shape quality is dependent on the coordinated control of several shape adjustment devices of UCM.In order to understand the shape control characteristics of UCM,coupling model of six-high rolling mill,based on two-dimensional varying thickness finite element rolls elastic deformation model and three-dimensional finite difference strip plastic deformation model,is setup for the detaile... 

采用XRD、SEM和激光粒度仪等手段,观察并研究了不同特性氧化镁在硅钢表面形成硅酸镁底层形貌特点,并结合热力学和差热-失重分析了MgO-SiO2的反应机理。研究结果表明:粒度小,活性值高的特种氧化镁在高温退火过程中与基体表面氧化物生成的硅酸镁底层,界面中硅酸镁底层嵌入基体较多,表面致密,颗粒细小,有利于形成附着性能优良的硅酸镁底层。 Surface microstructure of Mg2SiO4 coatings formed on the surface of oriented silicon steel coated with different kinds of MgO was investigated by XRD and SEM.The reaction mechanism between MgO and SiO2 was analyzed by TG-DSC and thermodynamic calculation.Results revealed that when the MgO with finer microstructure size and higher activity is employed,a dense Mg2SiO4 layer with finer microstructure and good binding to the steel substrate can be obtained.The results are very helpful for the prepar... 

本申请提供了一种取向硅钢铸坯的制备方法及铸坯系统，该制备方法用于对精炼后的钢水进行连铸处理，所述连铸处理包括以下步骤：进行凝固处理，以使所述精炼后的部分钢水凝固形成坯壳；凝固处理时，进行电磁搅拌，以使所述精炼后的剩余钢水最终形成铸坯，其中，所述电磁搅拌的位置和结晶器出口的间距为0.3～1.5m，所述电磁搅拌的电流范围为0A～900A。上述制备方法通过调节电磁搅拌的位置和电流大小来调节电磁搅拌的强度，进而通过电磁搅拌的强度来调节等轴晶的生成量，扩大等轴晶率的范围。

一种无取向性电磁钢板用热轧钢板，具有以下特征：以质量％计含有：C：0.0010～0.0050％、Si：1.90％～3.50％、Al：0.10％～3.00％、Mn：0.05～2.00％、P：0.10％以下、S：0.005％以下、N：0.0040％以下、B：0.0060％以下；剩余部分由Fe和杂质构成；在无取向性电磁钢板用热轧钢板的板宽方向端部，结晶晶界的C浓度(原子％)是P浓度(原子％)的3.0倍以上；无取向性电磁钢板用热轧钢板的结晶晶界的C浓度(原子％)是晶粒内C浓度的3.5倍以上。

本实用新型公开了一种硅钢片高效切割装置，包括切割工作台，切割工作台的顶部两侧设置有支承板，右侧支承板的一侧设置有控制面板，两组支承板相互贴近一侧的底部开设有若干组滑槽，若干组滑槽的内壁设置有滑轨，滑轨的外侧壁滑动设置有定位调节装置，定位调节装置的一侧设置有与支承板一侧滑动连接的固定块，两组支承板相互远离一侧设置有固定板座，固定板座与切割工作台之间转动连接有丝杆，丝杆与固定块之间相螺接，丝杆的顶部设置有把手，两组支承板相互贴近一侧的顶部设置有连接板，连接板的顶部两侧设置有电动推杆，电动推杆的底部设置有切割装置，本实用新型提供了一种防止硅钢片上浮的高效切割装置。

【作者】 朱一知； 高军军； ...

对CSP流程生产的无取向电工钢M50W800不同尺寸样品的磁性能进行了测试和分析,结果表明:采用不同单片检测的磁性能结果与标准的Epstein方圈样品检测对比,存在明显的偏差;且同一尺寸的单片纵横向样品之间相比较,对应的磁性能差异性也较大。几种不同尺寸的单片样品,以320mm×30mm尺寸的纵横向平均值最接近标准Epstein方圈样的性能值,其铁损偏差最小。 The magnetic properties of M50W800 non-oriented electrical steel produced by CSP process were tested and analyzed with samples of different sizes,showing that significant deviation existed compared to that of Epstein square circle sample.In particular,obvious difference in magnetic properties also existed between longitudinal and transverse samples of the same size.For test samples of different sizes,the average magnetic properties of 320mm×30mm samples are the closest to that of Epstein square ... 

研究了电工钢SXRC的显微结构和疲劳性能,并与DP钢进行了比较。结果表明,退火温度低温化能够有效的抑制电工钢的再结晶。该钢在固溶铌的作用下,能够在保证电机磁性的同时具有一定的强度。与DP钢相比,SXRC钢的抗疲劳性能更好。 The microstructures and fatigue properties of the electrical steel SXRC we re investigated, and the properties were also compared with the steel DP. The results show that the recrystallization of the electrical steel can be suppressed at lower annealing temperature. The steel presents favorable motor magnetic and also a compatible strength with the help of solid-solution Nb. Compared with the steel DP, the fatigue resistance of the steel SXRC is preferable. 

对熔融态钢液进行处理,研究了电脉冲对于取向硅钢凝固组织的影响作用,利用正交试验法研究了脉冲电容、频率、处理时间和电压等脉冲参数的作用效果。结果表明:电脉冲对钢锭晶粒组织具有明显的细化作用,凝固组织的等轴晶比例大幅上升,影响等轴晶比例的最显著性因素为脉冲频率,最优正交试验参数为电容1 200μF,脉冲频率1 Hz,处理时间5 s,脉冲电压800 V。随着输入能量的增大等轴晶率先增大后减小,脉冲输入能量为某值时,等轴晶率最大,利用经典形核理论和热力学对这一现象进行了解释。 The influence of electric pulse on the solidification structure of oriented silicon steel was investigated by applying electric pulse in molten steel.The affection due to different electric pulse parameters such as electric capacity,frequency,applied time and voltage was studied by orthogonal design test.The result showed that solidification structure of oriented silicon steel could be improved by the electric pulse,and the equiaxed crystal ratio increased obviously.The most influential paramete... 

适用范围 本标准规定了700 MW及以上级大电机用冷轧无取向电工钢带的术语和...