钢厂
普通取向硅钢轧制过程中组织和织构的演变
借助电子背散射衍射(EBSD)及ZEISS-200MAT金相显微镜对某钢厂普通取向硅钢(CGO)进行研究,研究结果表明:热轧板组织、织构沿板厚方向存在明显的不均匀性,在热轧板表层及次表层发生再结晶,同时存在强度较高的Goss织构,中心层存在较强的{001}<110>变形织构。冷轧组织均呈纤维状条带组织,一次冷轧后,热轧板中的Goss织构消失,织构主要为α、γ织构,经中间脱碳退火后,α、γ织构强度减弱,并出现一定强度的Goss织构和利于Goss织构发展的{554}<225>、{332}<113>等织构,经二次冷轧后,二次冷轧织构类型与一次冷轧织构一致,但织构强度不同。 The grain-oriented silicon steel produced by a steel factory was investigated by EBSD and ZEISS-200 MAT metallographic microscope.The results show that the textures and microstructures along thickness of hot rolled slab are inhomogeneous.The surface layer and the layer near that are recrystallized structure which has a high Goss texture,but there is deformation texture{001}<110>in the central layer.The structure after cold rolling is a structure like fiber strip.After the first cold rollin...
退火工艺对普通取向硅钢初次再结晶组织的影响
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...
熔盐电沉积过程温度对1.6Si无取向硅钢Si扩散的影响
试验了通过NaCl-KCl-NaF-SiO2熔盐在电流密度50 mA/cm2、电沉积脉冲电流正反向比9:1和750850℃60min电沉积下阴极(/mm)20×20×0.5的1.6Si无取向冷轧硅钢片断面层硅的分布,并通过计算得出Si的扩散系数。结果表明,电沉积温度由750℃提高至850℃时,试样中Si含量增加,扩散的深度由18μm提高到40μm;电沉积温度与Si在钢中的扩散系数近似符合Arrhenius指数关系。 The distribution of silicon at cross section of cathode(/mm) 20 × 20 × 0.5 sheet of 1.6Si non-oriented cold rolled silicon steel after electro-deposit treatment by NaCl-KCl-NaF-SiO2 molten salt with current intensity 50 mA/cm2,electro-deposit pulse current positive-negative ratio 9:1 at 750 850 ℃ for 60 min has been tested and the diffusion coefficient of Si is obtained by calculation.Results show that with increasing electro-deposit temperature from 750 ℃ to 85...
CN202122099636.4一种防溢出的无取向硅钢绝缘涂液存储装置
本实用新型公开了一种防溢出的无取向硅钢绝缘涂液存储装置,涉及无取向硅钢绝缘涂液技术领域,为解决现有无取向硅钢绝缘涂液存储设备在存储过程中存在涂液过满,导致液体溢出产生浪费现象的问题。所述绝缘涂液存储机构本体上方的一侧设置有液位监测器,所述液位监测器的下端设置有监测杆,所述液位监测器的输出端设置有单片机,且液位监测器的输出端与单片机电性连接,所述绝缘涂液存储机构本体的内壁设置有压力传感器,且压力传感器设置有若干个,所述压力传感器的输出端与单片机的输入端电性连接,所述绝缘涂液存储机构本体的内部设置有泵体,且泵体设置有两个,所述泵体的一端设置有溢流输送管。
CN202123158104.X一种变压器铁芯加工用硅钢片裁剪装置
本实用新型涉及变压器铁芯加工的技术领域,特别是涉及一种变压器铁芯加工用硅钢片裁剪装置,其可提高下料的便利性,同时提升工作效率;包括操作台、集料板、气缸、底架、两组立板、电机、从动轴、传送带、缓冲座、两组高弹簧和两组低弹簧,操作台底端设有四组支腿,操作台顶端设有送料组件和裁剪机,操作台上设有下料口,集料板转动安装在下料口内,气缸顶端和操作台底端固定连接,集料板底端滑动设有铰接座,气缸的输出端和铰接座铰接,立板通过两组立板固定安装在操作台底端,电机固定安装在底架前端,电机的输出端设有主动轴,主动轴转动安装在底架内,从动轴转动安装在底架内,主动轴和从动轴之间通过传送带传动连接。
二次冷轧中间退火对基于CSP工艺的取向硅钢组织及织构的影响
在实验室模拟CSP工艺条件下制备了取向硅钢,研究了二次冷轧中间退火工艺对组织和织构的影响。结果表明,中间退火温度对取向硅钢脱碳,高温退火组织及织构均产生明显影响。经940℃中间退火后,取向硅钢脱碳再结晶晶粒较850℃中间退火的多,且再经高温退火处理后,晶粒粗化,最大晶粒尺寸达4.8 mm;高斯织构组分密度达27.00,较850℃中间退火试样高。 Grain-oriented silicon steel was prepared by simulated CSP technology in laboratory. Effects of secondary cold-rolled intermediate annealing on microstructure and texture were studied. The results show that intermediate annealing has obvious effects on the microstructure and texture of the steels after decarburization annealing and high temperature annealing. After intermediate annealing at 940 ℃,recrystallized grain of decarburization annealed steel is more than that of intermediate annealed at...
取向硅钢含铬无机绝缘涂层的研究进展
绝缘涂层可以有效提高硅钢片的耐蚀、耐腐、磁、绝缘等性能,因此取向硅钢涂装绝缘涂层是取向硅钢生产过程中重要的一环。本文对取向硅钢含铬无机绝缘涂层以及氮化铬涂层的性能优缺点进行了介绍,并对国内无机含铬取向硅钢绝缘涂层及氮化铬涂层的研究现状进行了综述。最后对未来含铬无机绝缘涂层的研发方向进行了展望。 Insulation coating can effectively improve the corrosion resistance of silicon steel sheet, such as corrosion, magnetic, insulation performance, thus oriented silicon steel insulation coating is the important part of oriented silicon steel production process. In this paper, the inorganic insulation coating oriented silicon steel containing chromium and chromium nitride coating performance advantages and disadvantages are introduced.In addition, the research status of insulation coating and chrom...
无取向硅钢成品钢卷头、尾磁性能差异探讨
结合工业化生产过程中出现的同卷带钢头、尾磁性能差异现象,对50SW1300牌号无取向硅钢同卷带钢头、尾试样的夹杂物、晶体织构和显微组织进行了分析研究。结果表明,夹杂物、晶体织构是影响成品钢卷磁性能的重要因素。夹杂物是造成同卷带钢头、尾铁损差异的主要原因。夹杂物数量越多,尤其是小尺寸的夹杂物数量越多,对成品带钢的磁性能影响越大,对于本试验而言,AlN和MnS是影响成品带钢磁性能的主要夹杂物。晶体织构是造成同卷带钢头、尾磁感应强度差异的主要原因。有益的{100}和Goss织构含量越大,有害的{111}<110>和{111}<112>织构含量越小,即有益织构与有害织构含量比越大,成品带钢的磁感应强度越大。 Based on the industrial manufacture of non-oriented silicon steel sheets 50SW1300, the magnetic property variation of head and tail of the same finished steel sheets was discussed by analyzing non-metallic inclusion, crystal texture, and microstructure. Results show that, both of the non-metallic inclusion and the crystal texture will affect the magnetic properties significantly. The non-metallic inclusion is the key factor of the core loss variation of head and tail of the same finished steel s...
CN202122033237.8一种硅钢片图像采集装置
本实用新型涉及一种硅钢片图像采集装置,在固定支架上设置有工业相机,所述的工业相机可以沿垂直方向上下移动或者沿水平方向前后移动,通过上下移动或者前后移动对硅钢片的形状和尺寸、硅钢片叠积形成的铁芯进行实时图像采集。固定支架包括:固定底座、支撑杆和工作台面,一对固定底座平行对称设置,所述的固定底座上对称设置两条竖直支撑杆,竖直支撑杆的上端面固定连接工作台面,在两条竖直支撑杆的中间位置设置升降丝杆,水平支撑杆的两端分别与升降丝杆的升降螺母固定连接,相机滑台活动设置在水平支撑杆上。本实用新型通过工业相机的上下前后移动,实现了硅钢片形状尺寸和硅钢片高度即时拍照测量,较人工测量提高了测量精度及准确性。
CN202111220995.9一种冷轧取向硅钢EBSD用样品电解抛光制样方法
本发明公开了一种冷轧取向硅钢EBSD用样品电解抛光制样方法,包括:S1.机械抛光,切取10mm*10mm规格试样用超声仪清洗,在不同粒度的砂纸上预磨后在金相试样抛光机上抛光至镜面;S2.电解抛光,利用struerslectropol‑5型电解抛光机对机械抛光好的试样进行电解抛光;S3.EBSD检测。本发明主要解决现有设备技术条件下如何得到高质量的EBSD检测技术样品的问题,适用于大批量冷轧取向硅钢的EBSD样品制备,发明本方法后实验过程简单快捷,节约了实验时间和成本。
钇元素对6.5%Si无取向硅钢组织、高温拉伸及断裂机制的影响
通过微观组织表征、高温拉伸和断口形貌分析,研究了钇(Y)元素对6.5%Si无取向硅钢组织、高温拉伸及断裂机制的影响。研究结果表明,添加Y元素可以在钢液中形成YS和YP的复合析出。YS和YP可以充当异质形核基底,提高形核率,细化凝固组织。热轧组织不均匀,由表层至芯部分别形成等轴晶、等轴晶/拉长晶和拉长晶的混合组织。退火后,热轧变形组织转变为等轴晶,含Y实验钢的退火组织得到明显细化。500℃时效处理后,含Y实验钢具备较低的有序度,300℃的拉伸断口呈现韧性断裂特征,断后伸长率达到20.2%。相反,无Y实验钢发生脆性断裂,断后伸长率仅为2.1%。研究结果证实,Y元素可以通过组织细化和降低有序度提高6.5%Si无取向硅钢的中温塑性。 The effects of yttrium(Y)on microstructure,elevated-temperature tensile properties and fracture mechanism of 6.5% Si non-oriented electrical steel were investigated by means of microstructure characterization,high-temperature tensile test and fracture analysis.The results showed that the doping of Y introduced composite Y-rich precipitates(YS/YP)in the melt.YS and YP precipitates were qualified for heterogeneous nucleation agents,which thus raised the nucleation rate and refined the solidificati...