硅钢资料

本发明提供一种在同一卷材内得到稳定的磁特性的方向性电磁钢板的制造方法。上述方向性电磁钢板的制造方法，包括如下步骤：将具有规定的成分组成的钢坯热轧而制成热轧板，将上述热轧板退火而制成热轧板退火板，对上述热轧板退火板实施1次或隔着中间退火的2次以上的冷轧而制成最终板厚的冷轧板，对上述冷轧板实施一次再结晶退火和二次再结晶退火；上述冷轧包括至少1次的压下率为80％以上且轧制速度为设定值R0(mpm)期间的钢板温度T0(℃)与轧制速度为0.5×R0(mpm)以下期间的钢板温度T1(℃)满足式(1)的冷轧。

针对硅钢连续退火机组的主要能源介质消耗现状,对现有生产工艺和设备研究采取机组循环用水、增加清洗段漂洗级数等措施可节约大概27 m3/h的过滤水量,并可减少78%的弱碱处理量;将炉子烟气换热系统增加一级余热回收,每年回收的余热相当于583 t标煤消耗,可节约蒸汽5 368 t。 The present situation of energy consumption for silicon steel annealing line is analyzed in this paper.In existing process and equipment conditions,increasing the number of cleaning series will lead to a saving of about 27 m3/h of filter water and reduce 78 % of weak base processing volume.For the flue gas heat-exchange system,adding a waste heat recovery device will recover waste heat equivalent to 583 tons of standard coal per year,corresponding to a saving of steam 5 368 t per year. 

本发明涉及到一种应用于硅钢片冲压过程的冲压联动接料装置，包括固定连接在冲头侧面上的连杆，连杆一端远离冲头且连接有一根销，销上转动连接有摆杆，摆杆的一端开设有长孔，销插接在长孔内，摆杆另一端通过铰轴转动连接在机架上，摆杆设置有铰轴的一端连接有一根联臂，联臂下端通过转轴连接有接料盘，转轴与冲台之间设置有平行于转轴的托辊，托辊高于转轴，接料盘接近冲台的一端搁置在托辊上，冲头处于上止点时，接料盘接近冲台的一端伸入冲头和冲台之间且位于冲头正下方，冲头处于下止点时，接料盘接近冲台的一端退出冲头和冲台之间，位于冲台一侧，所述冲头下端面设置有凸模，冲台上端面设置有与凸模配合的凹模。

选取了三种50W 800无取向电工钢,分析了化学成分、晶粒尺寸、织构、以及200℃时效处理48 h前后的磁性能和第二相粒子析出状态的变化。结果表明,钢板中第二相粒子的分布密度对钢板铁损有最重要的影响。降低钢中C、N元素含量,或改进钢板热加工参数以降低成品钢板中第二相粒子形成元素的过饱和度均有利于明显降低钢板磁时效过程中的铁损增幅。钢板中对磁性能有利的织构也有利于降低钢板铁损的时效幅度。 The evolution of chemical composition,grain size,texture,as well as magnetic property after aging treatment at 200 ℃ for 48 h and distribution of second phase particles precipitation in three selected 50W800 non-oriented electrical steels were analyzed.The results show that the distribution density of second phase particles has great influence on core loss.Reducing C and N content,or improving hot-working parameters to reduce the supersaturation of elements forming second phase particles in prod... 

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... 

一种适合冷连轧的高效变频压缩机用无取向硅钢，其化学成分及wt%为：C：≤0.0025%、Si：2.4~2.8%、Mn：0.35~0.65%、Al：0.5~0.8%、S：≤0.0020%、N：≤0.0025%、P：≤0.03%、Sb或Sn：0.03~0.08%；生产方法：冶炼浇注；对铸坯加热；粗轧；精轧；卷取；常化；经酸洗后冷连轧；退火；涂敷及精整。本发明产品性能既保证产品磁性能又提高生产效率、提高成材率和降低生产成本的效果，五机架连轧机只需要一次轧过即可，且连轧机相比单机架轧机减少了来回轧制的带头带尾切废量，因而可提高成材率，生产效率和成材率提高，自然降低生产成本。

本实用新型涉及硅钢二次轧制的技术领域，且公开了一种用于硅钢成品二次轧制的轧辊间距调整机构，包括安装架，所述安装架的内部设置有上、下相对的两组工作辊，两组工作辊的内部均固定连接有转轴，外侧均滑动连接有保护组件，其中下工作辊通过保护组件与安装架固定连接，上工作辊的上方固定连接有升降组件，上、下两组工作辊之间固定连接有限位组件，通过升降组件带动上工作辊的上下移动，来调整上工作辊和下工作辊之间的距离，保持二次轧制时较大的压下率，同时限位机构能有效防止因工作辊距离太近而导致的硅钢断带的情况。

测试了高强无取向电工钢的S-N曲线,并借助光学显微镜、扫描电子显微镜、透射电子显微镜分析了实验钢组织,疲劳断口形貌和位错结构。结果表明:室温条件下,频率为20Hz,应力比R为0.1,循环10~7周次时,实验钢的疲劳强度为360MPa,疲劳裂纹萌生于实验钢的次表面,裂纹萌生点附近有沿晶开裂现象,疲劳裂纹扩展区域有解理台阶与疲劳条纹,瞬间断裂区是韧性断裂,有大量韧窝。实验钢在循环应力作用下基体中产生了大量位错,并有驻留滑移带终止在晶界位置。 The S-N curve of a high strength non-oriented electrical steel was tested.The microstructure and fatigue fracture morphology and dislocation were analyzed by optical microscope,scanning electron microscope,transmission electron microscope.The results showed that:at room temperature and the frequency of 20 Hz and the stress ratio Rof 0.1,the fatigue strength of the experimental steel was 360 MPa when the cycle was 10~7 cycles.The fatigue crack initiation at the surface of the steel and the interg... 

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 ... 

薄带连铸流程下取向硅钢粗大λ晶粒(〈100〉//ND,normal direction)的“遗传”会导致磁性能恶化.为解决这一问题，针对取向硅钢的热轧孪生行为开展研究，结果表明：凝固组织粗大的取向硅钢在650℃热轧时可产生大量{112}〈111〉形变孪晶，这与具有高层错能的硅钢在较高温度下难以孪生变形的传统认知不同.热轧过程中复杂的应力状态降低了变形孪晶的取向依赖性，由于具有更高的储存能，孪晶界/孪晶界及孪晶界/晶界交叉点成为再结晶形核的优先位置，大大提高了常化过程中的再结晶率，受沿孪晶界应变分布及孪晶间距离的限制，沿孪晶界形核的再结晶晶粒通常呈“饼状”,最终形成以细小且取向漫散的再结晶晶粒为主的常化组织，消除了初始凝固组织中有害的粗大λ晶粒. In strip casting grain-oriented silicon steels, the inheritance of coarse λ grains(〈100〉//ND, normal direction) can deteriorate their magnetic properties. To solve the problem, twinning behaviors in strip casting grain-oriented silicon steels during hot rolling were investigated in this work. It is found that after rolling at 650 ℃, a number of {112}〈111〉deformation twins are formed in the coarse solidification microstructure of the steels, in contrast to the well-accepted view that it is diffic... 

利用场发射电镜及能谱仪研究了取向电工钢薄、厚板坯铸锭中不同区域的析出相差异,确定了MnS、AlN及Fe3C的析出顺序和形貌特征。结果表明AlN以先析出的MnS为形核核心,形成粗大微米级的复合析出相。针状Fe3C既可以在复合析出相表面形成也可以在基体中单独出现,主要受冷却速度的影响。在1250℃保温1～2 h,AlN、Fe3C均可完全回溶,但部分MnS仍不回溶。MnS尺寸随着保温时间延长而增大。导致热轧板中沿轧向分布的粗大MnS,减弱了粒子钉扎力。 Precipitates in thin and thick slabs of electrical silicon steel were investigated by means of field emission SEM and EDS analysis.The precipitation sequence and the morphology of MnS,AlN and Fe3C particles were identified.AlN particles are observed to be nucleated on surface of MnS forming micron-meter-sized complex particles.Acicular Fe3C can precipitate on surface of the complex MnS/AlN particles or directly from matrix depending on cooling rate of the slabs.After holding at 1250 ℃ for 1-2 h,... 

本发明公开了一种酸洗低牌号无取向硅钢的方法，从酸洗线前拉矫机的延伸率设定、酸液浓度、酸液温度、酸洗槽内液位的控制、酸液中铁离子的含量等方面入手，解决酸洗低牌号无取向硅钢的问题。