硅钢资料

【作者】 韩超； 代智肄； ...

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. 

对冷轧无取向硅钢在冶炼过程中各个工序的顶渣进行了检测,分析了顶渣变化原因,并得出结论:硅钢生产宜采用复吹转炉,以降低吹炼终点渣中TFe含量,进而减轻对精炼的压力;使用低S、低Al2O3含量中间包覆盖剂;RH脱氧及合金化顺序采用先加硅铁后加铝;首罐宜经LF提温并降低渣中TFe。 The top-surface slag used for the various production processes in smelting coldrolled non-oriented electrical steel is tested and based on tested results the cause of the top surface slag change is analyzed.So it is concluded that the combined blown converter is more suitable to be used for smelting electrical steel in order to reduce the content of TFe in slag at blow end point and then much better results can be achieved during the period of refining.Secondly the tundish flux contenting low co... 

利用XRD和EBSD研究了长轴分别平行于轧向(RD)、横向(TD)和轧面法向(ND)的柱状晶样品在热轧、冷轧及退火过程中的组织、织构演变规律,并分别从几何诱导和取向诱导两个方面分析了晶界的交互作用.结果表明,热轧时由表面摩擦剪切作用引起的组织和织构梯度直接影响并遗传给后续冷轧及退火样品.热轧后,不同样品的初始晶粒形状各向异性差异消失,形成相同的各向异性晶界组织,但晶体学各向异性发生改变,导致随后冷轧、退火组织及织构的变化均不同于直接冷轧的柱状晶样品.研究中特别关注了对磁性能有利的{100}取向区域与晶界的关系. Columnar grains show their special characteristics of morphological and crystallographic anisotropies, and thus markedly influence the microstructure and texture evolution during rolling and annealing process in electrical steel. The rolling and annealing microstructure and texture of three columnar grained samples with the long axes arranged along different directions were investigated by means of XRD and EBSD techniques, and the effects of columnar grain boundaries were analyzed from the view ... 

本发明公开了一种含铝无取向硅钢中残余元素的控制方法。工艺流程包括KR脱硫‑转炉冶炼‑RH处理‑连铸。转炉控制合理的炉料结构，采用多渣吹炼，挡渣出钢。所用废钢中Ti、V、Nb等残余元素的质量分数之和≤0.005％，废钢和铁水的比例为0.2‑0.3。转炉吹炼终点炉渣成分中Ti、V、Nb等残余元素的氧化物含量之和为0.1‑0.5％，出钢后钢包顶渣厚度为50‑60mm；RH脱碳、脱氧、合金化后，净循环时间≤5min。通过本发明的实施，含铝无取向硅钢成品中Ti、V的含量≤0.002％，Nb含量≤0.001％，硅钢的磁性能显著提高。

对高牌号无取向电工钢国内生产情况、工艺技术、产品性能及应用领域等进行了阐述,并探讨了高牌号无取向电工钢产品的发展趋势。 This paper introduces basic facts on the production status,process technology and products’ properties and their applications of non-oriented electrical steel with high grade at home,and then discusses the development trend on technology for producing the non-oriented electrical steel with high grade. 

本发明提供了一种无取向硅钢RH顶枪喷粉脱硫工艺，RH脱碳结束测温定氧，立即加入铝粒脱氧合金化、之后立即依次连续加入合金进行成分调整，合金加完后立即开始顶枪喷粉；加入铝粒的量＝铝粒理论加入量+0.2‑0.4kg/t钢；喷粉时，控制喷粉速度与钢液循环流量相匹配；本发明从真空条件下脱硫热力学和动力学角度出发对具有顶枪喷粉功能的RH脱硫工艺进行改进，提高脱硫率。

在实验室试制了TSCR流程的低碳低硅无取向硅钢,研究了在850～1050℃不同温度常化对冷轧量0.5mm厚钢板再经950℃×7min退火后的组织、织构和磁性能的影响。结果表明:随常化温度的升高,使热轧板晶粒尺寸增大,晶界更清晰,组织均匀性更好;由于第二相AlN和MnS析出物尺寸比较大,使冷轧退火后钢板晶粒也随常化温度升高呈单调增大趋势;γ有利织构和{111}、{112}不利织构与常化温度升高同时增强,但前者增强更多;冷轧板退火后铁损随常化温度升高呈单调下降,磁感呈单调上升趋势。 The low-carbon and low-silicon non-oriented silicon steel was prepared by thin slab casting and rolling(TSCR) in lab.The effect of normalizing at different temperatures in 850-1 050℃on microstructure, texture and magnetic properties of 0.5 mm cold-rolled sheets after annealing at 950℃for 7 min was researched. The results show that with increasing the normalizing temperature,the grain size of hot-rolled sheets increased,the grain boundaries were more clear and the rnicrostructure uniformity was b... 

本发明公开了一种基于机器视觉的高牌号冷轧硅钢孔洞检测系统。该系统包括：线扫光源、线阵相机、速度检测模块和工控机；线扫光源安装在钢板生产线中钢板的下方，且线扫光源的光线能够对准钢板和线阵相机；线阵相机安装在钢板的上方，且与工控机连接，用于连续扫描钢板以获取连续的钢板图像；速度检测模块与线阵相机连接，用于检测钢板的移动速度，线阵相机能够根据钢板的移动速度调整行频；工控机用于根据钢板图像检测钢板是否存在孔洞。本发明的基于机器视觉的高牌号冷轧硅钢孔洞检测系统通过利用线阵相机和工控机能够实现冷轧钢板的孔洞的自动检测，检测效率高，识别精度高，能够降低漏检率和误检率，操作方便，安全可靠。

本发明一种铝镇静含硅钢的脱氧方法，包括转炉冶炼、LF炉精炼工序，转炉工序：转炉出钢过程采用含硅脱氧剂进行脱氧，出钢完毕后，向钢液表面加入顶渣改质剂，数量为400±25kg/炉，所述顶渣改质剂的成分及其质量百分含量为：Al2O3：9％±1％，CaO：27.5％±1.5％，SiO2：3％±1％，Al：50％±2％，CaF2：7％±1％。精炼工序：采用铝脱氧剂进行脱氧、造渣。本发明通过两步脱氧工艺，大幅降低脱氧成本同时提高钢水质量，由于硅脱氧相对于铝脱氧在钢水中形成的夹杂物更容易上浮，所以也提高了钢水纯净度，提高钢水质量。

研究表明,硅钢中的夹杂物对成品带钢的磁性能有显著影响。为研究冶炼过程硅钢中的夹杂物遗传变化,进而提出更有效的控制措施加以去除,本文结合典型的无取向硅钢生产炉次,采用非水溶液电解提取+扫描电镜观察方法分析冶炼过程中上述炉次典型试样的夹杂物。结果表明:转炉冶炼结束、RH精炼开始时,钢的氧化物夹杂总量最大,约为0.23%;RH精炼过程中,氧化物夹杂总量不断降低,并在脱碳结束时达到最低,约为0.02%;连铸过程中,氧化物夹杂总量仍有不断降低趋势,但夹杂物的平均尺寸变化不大。本试验条件下,中间包试样的夹杂物数量约为1.59×104个/mm3。 As we all know, the non-metallic inclusion effects magnetic properties of silicon steel sheets obviously. The article aims to study the heredity of non-metallic inclusion in non-oriented silicon steels during the steel making process, and then provides a more effective controlling measure to remove the inclusions. Based on the typical non-oriented silicon steel charges, the non-aqueous solution extraction and SEM observation were adopted to analyze the non-metallic inclusions. Results show that,... 

该电磁钢板用涂布组合物是含有环氧树脂、高温固化型交联剂以及无机微粒的电磁钢板用涂布组合物，相对于所述环氧树脂的100质量份，所述高温固化型交联剂为5～30质量份，所述无机微粒是从金属氢氧化物、在25℃下与水反应而成为金属氢氧化物的金属氧化物、以及具有羟基的硅酸盐矿物中选择的一种以上，所述无机微粒的体积平均粒径为0.05～2.0μm，所述环氧树脂的含量相对于所述电磁钢板用涂布组合物的总质量为45质量％以上，所述无机微粒的含量相对于所述环氧树脂100质量份为1～100质量份。