硅钢资料

分析了电感耦合等离子体发射光谱法(ICP-AES)测定硅钢中铌的检测过程,讨论了该检测过程中不确定度的主要来源,建立了该方法的定量的数学模型,并根据这一模型计算出了检测结果的合成标准不确定度和扩展不确定度。 The measurement of niobium content in silicon steel by inductively coupled plasma atomic emission spectrometry(ICP-AES) was analyzed,by which the main factors affecting the uncertainty of the measurement were ascertained and the calculation formula was given.Finally,according to the formula the combined uncertainty and expanded uncertainty were obtained. 

目的提高硅钢的磁性能。方法采用多弧离子镀技术,在普通取向硅钢薄板两面沉积高硅FeSi合金层制得高硅梯度硅钢,并进行热处理,观察其显微组织,测量磁性能。结果退火态高硅梯度硅钢表面的高硅FeSi合金层与基底结合紧密,均匀致密。高硅梯度硅钢中硅含量呈梯度分布,最表层硅质量分数为11.0%,随着深度增加,硅含量逐渐降低,在距表面20μm处硅质量分数仍能达到6.5%。沉积态高硅梯度硅钢的电阻率ρ、低频铁损P10/50、高频铁损P10/1k及磁感应强度B8分别为68.6μΩ·cm,0.82W/kg,83.3 W/kg和1.73 T,退火后分别为63.1μΩ·cm,0.44 W/kg,54.38 W/kg和1.89 T。结论由于表层高硅FeSi合金层的存在,梯度高硅钢的低频磁学性能良好,但高频损耗需进一步改善。 Objective To improve the magnetic properties of silicon steel. Methods FeSi alloy coatings with high-silicon content were deposited on the surface of common grain-oriented silicon steel by cathodic arc plasma evaporation,and then a kind of high silicon gradient steel was prepared. The morphologies,content and magnetic properties of the samples were tested. Results FeSi alloy coatings were featured with compact microstructures and excellent adhesive quality with the substrates. The silicon conten... 

对w(Si)=3%无取向硅钢进行表面机械研磨处理(SMAT)和异步轧制(CSR),获得表面纳米结构,再进行550～650℃、4 h固体粉末渗硅处理,用透射电镜(TEM)、扫描电镜(SEM)和X射线衍射仪(XRD)研究表层组织演变。结果表明:经过SMAT后,w(Si)=3%无取向硅钢表面形成了等轴状、取向呈随机分布的、晶粒尺寸为10 nm的纳米晶组织;异步轧制后,表面纳米晶组织保持不变;550～650℃、4 h渗硅处理后,SMAT+CSR样品表面形成化合物层,其厚度随着温度的升高由17μm增加到52μm;化合物层由Fe3Si和FeSi相组成. Nanostructured surface layer was fabricated on a 3%(mass fraction) non-grain oriented silicon steel by means of surface mechanical attrition treatment(SMAT) and cross-shear rolling(CSR),and then a solid powder siliconizing treatment was carried out for the SMAT+CSR sample at 550~650 ℃ for 4 h.The microstructural evolution was examined by using transmission electron microscopy(TEM),scanning electron microscopy(SEM) and X-ray diffraction(XRD).Experimental results show that: equiaxed nanocrystallin... 

【作者】 王爱华； ...

一种提高有效氮和底层质量的高磁感取向硅钢制造方法：冶炼后连铸成坯；对铸坯加热；热轧、常化及酸洗后时效冷轧；在湿式气氛下脱碳退火；在湿式混合气氛下均热；在湿式混合气氛下渗氮退火；进行后工序。本发明与现有技术相比，通过合理控制渗氮过程，提高渗氮后钢板基体内氮含量与总氮量之间的比例达到80%以上，使无点状露晶产生，最终获得产品的底层质量优异。

一种低温高磁感取向硅钢的热轧方法：经转炉冶炼并浇注成坯；对铸坯加热后进行粗轧：首先确定粗轧减宽量；根据所确定的粗轧减宽量进行粗轧；进行精轧；常规进行下工序。本发明采用低温板坯加热技术，降低了板坯烧损和修炉负担，且边裂发生率比现有技术的不低于18%的基础上能降低5%以上，由此节约资源及降低能耗。

通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响。对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响。结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加。退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少。 The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual st... 

电动汽车电机在高速旋转时承受离心力和电磁力的作用,在进行电机转子设计时,既要考虑电磁性能,还要考虑机械性能。对电机转子受力情况进行了综述,分析了转子用电工钢疲劳性能参数的重要性,详细阐述了试样抛光、表面处理、试样的对中和安装对测试结果的影响。 The motor of electric vehicle bears big force for high speed rotors,mainly including centrifugal and electromagnetic forces.The magnetic and mechanical aspects of the electrical steel are crucial to machine design.In this paper,the forces applied on the motor were summarized and importance of fatigue properties was analyzed.The influence of specimen polish,surface treatment,alignment and installation on fatigue testing result were represented in detail. 

本发明涉及一种提高低温高磁感取向硅钢附着性的方法，该方法在现有低温高磁感取向硅钢连续式脱碳退火炉中，通过在脱碳退火前区通入氮气、氢气干式混合气，在脱碳退火后区通入氮气、氢气湿式混合气进行脱碳，在渗氮区通入氮气、氢气湿式混合气及氨气进行渗氮，解决了低温高磁感取向硅钢附着性不好的难题。本发明方法提高了钢中总氧量、增加了氧化层厚度、改善了氧化层结构，经高温退火后生成了致密的硅酸镁底层，附着性大幅提高，测试结果均在C级以上，大部分样品在B级以上。

本发明涉及取向硅钢制造技术领域，公开了一种快速判断取向硅钢初次再结晶晶粒直径的方法，包括如下步骤：选取取向硅钢热轧来料，进行生产，对产出的钢板在同部位各取若干个拉伸试样，加工拉伸和分析，取得屈服强度，在拉伸试样部位两侧连续制取金相试样，计算对应拉伸试样的平均晶粒直径D，将性能数据和平均晶粒直径进行统计分析，建立屈服强度与晶粒直径的对应关系，实际生产时，在产出的钢板上取判断试样，取得判断试样的屈服强度，进而取得判断试样的晶粒直径。本发明快速判断取向硅钢初次再结晶晶粒直径的方法，通过机械性能检验，来间接指示初次晶粒的大小，检测速度快，评价更准确。

本发明涉及含Cu无取向硅钢的生产方法，转炉炼钢，真空处理过后连铸成坯；铸坯化学成分：1.0≤Si/Cu≤3.0,3.0≤Si+Cu≤5.5％，S≤0.0015％，(Mn+Cu)/S≥3000，其他为Fe,Als,P以及不可避免的杂质元素；对铸坯进行粗轧；粗轧后的中间坯采用热卷机进行强制卷取，开卷后中间坯进入保温箱，控制保温箱内冷却速度≤5℃/s；进入保温箱的中间坯温度T1满足：1000‑(Si+Cu)×103≤T1≤1100‑(Si+Cu)×103；高压除鳞，精轧，层流冷却，卷取；连续酸洗；冷轧到目标厚度，成品退火，涂层；成品卷进行时效处理。成品卷具有较低的中高频铁损，高磁感和高屈服强度。

本文中简要介绍了武汉钢铁有限公司采用薄板坯连铸连轧CSP(compact strip production, CSP)工艺生产中低牌号无取向硅钢的实践情况.CSP工艺生产的硅钢具有成品磁性均匀、板形好的优势，但是在利用该技术生产中低牌号无取向硅钢时，常存在成品板表面瓦楞状缺陷严重、连铸生产效率低等问题.通过优化炼钢成分、热轧等相关工艺，可消除热轧板厚度方向中心的粗大形变组织，从源头上避免了粗大{100}<011>纤维组织的出现，消除了瓦楞状缺陷；通过提升冶炼效率和控制钢中夹杂物总量，可优化隧道炉的加热温度与在炉时间，大幅度提升了连铸生产效率，实现了中低牌号无取向硅钢的批量稳定制造，使CSP产线成为中低牌号无取向硅钢热轧板原料的主要供给生产线.如何进一步提升钢水纯洁度、提高连铸生产效率、降低生产成本，以及挖掘该产线生产薄带钢的技术优点，是未来工作的重点. This paper briefly introduces the practice of producing medium and low grade non oriented silicon steel(NGO) with CSP(compact strip production, CSP)technology in Wuhan Iron and Steel Co., Ltd.. This technology has the inherent advantages of uniform magnetic properties and good shape for silicon steel finished strip. However, in the actual production process, there are serious corrugated defects on the surface of silicon steel finished strip, and production efficiency of continuous casting is low...