硅钢资料

本发明的一种超低碳含钇取向硅钢及其制备方法，化学组成及质量百分比为Si：2.0～4.5％，C：≤0.003％，Y：0.001～0.1％，Mn：0.1～0.25％，Al：0.01～0.02％，Cu:0～0.3％，S：0.02～0.035％，N：0.009～0.011％，其余为Fe和不可避免的杂质元素。生产工艺为：连铸、铸坯加热、热轧、常化、冷轧、初次再结晶退火、二次再结晶退火。本发明采用超低碳的成分，取消了常规取向硅钢脱碳退火工艺，简化了生产流程。通过稀土微合金化解决了因超低碳成分导致的单向铁素体组织抑制剂析出困难的技术难题。本发明制备的含钇取向硅钢厚度为0.2～0.35mm，磁感应强度B8为1.85～1.94T，铁损P17/50为0.9～1.2W/kg，可以用于变压器的铁芯材料，制备流程更为简洁。

介绍了一种适用于超大晶粒取向硅钢的高斯晶粒取向偏离角的X射线衍射测量方法，提出了将试探法和探测器扫描法相结合的方式进行测量。结果表明：该方法可以同时获得准确的实际衍射角度和取向偏离角度，试样制备方式简单，对设备的要求低且测量结果准确。 This paper introduces a X-ray diffraction measurement method of Gaussian grain orientation deviation angle for ultra-large grain oriented silicon steel, and puts forward a method of combining the test method with the detector scanning. The results show that this method can obtain accurate actual diffraction angle and orientation deviation angle at the same time. The sample preparation method is simple, the requirements for equipment are low, and the measurement results are accurate. 

【作者】 谌剑； ...

基于BOF→RH→CSP生产工艺,研究了RH精炼过程钢中夹杂物类型演变及MgO·Al2O3夹杂物形成规律,同时对MgO·Al2O3夹杂物的形成条件进行了热力学计算,借助CFD数值模拟软件研究了RH精炼过程卷渣行为。研究发现,RH精炼过程20和30 min时,w([MgO])/w([Al2O3])为0.005~0.020,未发现MgO·Al2O3夹杂物;RH出站后夹杂物w([MgO])/w([Al2O3])为0.3~0.5,且RH精炼结束后MgO·Al2O3夹杂物占夹杂物总量的58.4%;另外,RH精炼过程钢液表面速度CFD模拟结果为0.57 m/s,大于临界卷渣速度0.45 m/s,且顶渣成分与夹杂物成分相近,存在卷渣现象。热力学计算表明,钢液与炉渣平衡时钢中w([Al])为0.31%~0.37%,w([Mg])为0.00024%~0.00028%,在MgO·Al2O3生成区域之内。减少RH处理过程卷渣,浇铸过程下渣及控制顶渣和包衬相中MgO质量分数可抑制MgO·Al2O3夹杂物形成。 Based on the practical production of non-oriented silicon steel, the evolution of inclusion type and the formation of MgO·Al2O3inclusion were analyzed in the process of BOF→RH→CSP. The thermodynamic conditions for forming MgO·Al2O3inclusion were discussed and the behavior of slag entrapment of molten steel was also simulated by CFD software during RH refining. The results showed that the value of w([MgO])/w([Al2O3]) was in the range of 0.005-0.020 and no MgO · Al2O3 inclusion was observed at 20 ... 

本发明公开了一种硅钢片冲压设备及其使用方法，包括底座，所述底座顶部的左侧固定连接有侧板，所述侧板表面的中心处开设有限位滑孔，所述底座内腔底部的左侧固定连接有伺服电机，所述伺服电机的输出轴固定连接有螺纹杆。本发明通过设置伺服电机、螺纹杆、螺纹套和限位滑杆，能够带动支撑板和气缸进行高度调节，同时能够带动上板和冲压板进行高度调节，方便使用者适应不同厚度的硅钢片，同时支撑杆、套筒和复位弹簧能够带动顶板在不受力的情况下复位至活动槽的外部，方便使用，解决了现有的硅钢片冲压设备在使用时不能根据硅钢片的厚度进行冲压高度的调节，因此不能很好的适应使用需要的问题。

研究了无取向硅钢钙处理前后夹杂物的行为,重点考察了钙处理前后夹杂物的成分、类型、形貌和尺寸研究的变化情况,为实际生产中无取向硅钢的钙处理提供理论指导。试验发现:钙处理前夹杂物主要以Al2O3、Al2O3-MgO为主,且在夹杂物表面有AlN析出,钙处理后夹杂物以Al2O3-MgO-CaS-CaO系复合夹杂物为主,还含有少量的SiO2或AlN;钙处理前后,夹杂物形貌由多边形或不规则形逐渐向球形或近似球形转变,并且夹杂物尺寸不断增大;钙处理前后,含钙夹杂物的比例发生突变,由10%增大到74.5%,且随着钙处理时间的延长,含钙夹杂物比例下降,表明钙处理使夹杂物变性后易聚集长大并上浮去除。 Behavior of inclusions before and after calcium treatment in non-oriented silicon steel was researched by investigating changes of compositions,types,shapes and sizes of inclusions before and after calcium treatment,for the purpose of providing theoretical guidance for calcium treatment of non-oriented silicon steel in actual situation. Results indicated that Al2O3 and Al2O3-MgO were main types of inclusions before calcium treatment,sometimes AlN maybe precipitate in the outer of inclusions. Al2... 

 

为研究退火工艺对普通取向硅钢初次再结晶组织的影响,对经不同温度、保温时间和升温速率退火后的材料组织进行了分析。结果表明:在等温退火条件下,加热至600℃时开始发生初次再结晶,800℃以上初次再结晶组织发展完善;而在最终冷轧板直接进行最终高温退火的情况下,加热温度在500～700℃时,将升温速率提高到80℃/h,初次再结晶组织更易于发展完善。 To investigate the influence of annealing process on the recrystallization of common grain oriented silicon steel,microstructures of sheets annealed at different temperature,soaking time and heating rate are observed.Results show that under the condition of isothermal annealing,recrystallization begins at 600℃ and fully develops above 800℃,while in the case that the final cold rolled sheets are directly thrown to final high temperature annealing,recrystallization is likely to develop with the he... 

针对目前大部分无取向电工钢处理液为含铬处理液、且需在较高温度下固化的情况,在分析成膜物质性质的基础上,试验研究了一种可低温快速固化的电工钢环保绝缘处理液,研究了其涂装工艺,并测定了涂层的附着性、绝缘性、耐热性、耐蚀性等性能。试验结果表明:该处理液可在150~250℃下快速烘干固化,涂层表面光滑且致密均匀,性能优良,可满足中小电机的使用要求。 At present,most of the insulating fluid for non-oriented electrical steel contains chromium,and should be cured at high temperature.On the basis of analyzing the characteristics of the film-forming substance,a kind of eco-friendly insulating fluid with lower curing temperature for non-oriented electrical steel sheet was developed in the experiments.Then its coating process was studied,and the adhesiveness,insulativity,heat resistance,corrosion resistance and other properties of the coating was m... 

用Gleeble1500D模拟试验机在变形温度为950～1 200℃、应变速率为0.01～8s-1、最大变形程度为60%的条件下,对硅钢50A1300做单道次压缩试验,首先分析了不同参数对流变应力的影响,然后用回归法确定了应力模型中的变形激活能及材料常数,得到硅钢50A1300在峰值应力条件和稳态应力条件下的变形激活能分别为270.360和91.557kJ/mol,同时得到了流变峰值应力模型,模型的相关系数为0.997。最后通过作lnθ-ε图的方法找到了硅钢50A1300发生动态再结晶的临界应变量,并回归得到峰值应变量、临界应变量与参数Z/C的关系式。 To analyze the effects of different parameters on the flow stress and critical strain of the dynamic recrystallization,single-pass compression experiments were carried out with silicon steel 50A1300 specimens using a Gleeble1500D thermal simulator at a temperature range of 950-1 200 ℃ and strain rate range of 0.01-8 s-1 under the condition of maximum deformation of 60%.The average deformation activation energy is respectively 270.360 and 91.557 kJ/mol under the peak stress and steady-state stres... 

【作者】 杨得草； ...

本发明涉及一种超纯净无取向冷轧硅钢中非金属夹杂物形貌的原位观察方法，包括如下步骤：制备无取向冷轧硅钢样品，将待测试面用打磨至1000#，使样品表面平整光滑，并进行机械抛光和表面清洗。对处理好的样品在电化学工作站上进行电化学腐蚀，电解液为：1~8wt%氯化物MCl溶液，余量为去离子水，通入CO2气体至饱和，加入适量NaHCO3和三乙醇胺作为稳定剂调节pH值将其稳定在6.0~6.5之间。电化学设定参数：开路：0.5~2h，动电位极化测试：扫描速率:0.1mV/S~1.0mV/S，测试区间：VS.SCE‑0.8V~0.2V，测试温度为：10~25℃。取不同区间内做完电化学腐蚀的样品用去离子水冲洗，吹干。通过扫描电子显微镜+能谱仪对非金属夹杂物的形貌进行原位观察和成分分析。