硅钢资料

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... 

Fe-6.5%Si高硅钢是一种具有高磁导率、低矫顽力和低铁损等优异软磁性能的合金,但是其室温脆性和低的热加工性能严重影响了其在工业领域的应用。综述了Fe-6.5%Si高硅钢的性能,评述了合金的改性法、特殊轧制法、快速凝固法、沉积扩散法、粉末冶金法等制备工艺。 It is well known that 6.5%Si high silicon steel is one kind of soft magnetic materials with higher re-lative permeability,lower coercive force and iron loss than those of conventional industrial silicon steel.However,their room-temperature embrittleness and poor workability limit their practical applications in the industry.The pre-paration technique such as modification treatment on alloy,special rolling,rapid solidification,CVD and powder me-tallurgy is reviewed. 

【作者】 欧阳帆； 肖侃； ...

本实用新型公开了一种变压器铁芯硅钢片叠装对齐工装，包括叠装平台、定位板、推齐板和下压板；定位板和推齐板分别位于叠装平台的两侧，下压板位于叠装平台的上方；定位板用于对铁芯长度或宽度侧进行定位；推齐板平推铁芯使各硅钢片抵靠定位板而对齐；下压板下压铁芯使各硅钢片叠装紧密。本实用新型提供的一种变压器铁芯硅钢片叠装对齐工装，能够提高铁芯生产精度，并提高硅钢片叠装效率。

【作者】 潘恒韬； 欧阳帆； ...

本发明公开了一种高牌号硅钢板的激光焊接方法，目的在于改善常化工艺前焊接焊缝和常化工艺后焊接焊缝质量，避免产生焊接缺陷及裂纹，降低连续生产过程中硅钢板的断带率，提高生产效率。所用硅钢板的Si含量为1.75－3.45％，均为质量比，厚度为1.85－2.90mm。本方法的特征在于根据前后两卷高牌号硅钢板的总含Si量(Si1+Si2)和总厚度(h1+h2)调整激光焊接的焊接功率和后加热退火工艺的加热退火功率，实现单面拼接焊。本方法根据钢材总含Si量及总厚度的不同，给出了具体的激光焊接工艺参数。采用该方法，可以改善焊缝显微组织，降低焊缝区域与母材区域的硬度差，减少焊接应力，提高焊缝质量；此外还具有焊接耗能少的优点。

采用\"热轧复合+冷轧减薄+退火\"方法成功制备了0.20mm厚的硅浓度梯度高硅钢薄带,并采用SEM和X射线衍射技术对制备过程中组织和织构演变进行了研究。热轧复合板微观组织呈明显层状分布,复合界面为紧密冶金结合且经过83%的大冷轧变形未开裂。热轧和冷轧复合板带中均形成强α和γ织构,再结晶退火后形成强γ织构。冷轧和退火织构沿板厚呈显著的梯度分布特征,其主要来自于复合界面两侧硅浓度和初始热轧织构的差异性以及冷变形的不均匀性。 Gradient high silicon steel thin sheets with thickness of 0.20 mm were successfully produced by the rolling and annealing method,including hot rolling bonding,cold rolling,and annealing.Microstructure and texture evolution was investigated by means of SEM and X-ray diffraction.Microstructure of hot-rolling-bonding shows obviously layered distribution,the composite interface was closely metallurgical bonding and no cracking appears even after 83%cold rolling.Strongαandγfibers develop in the hot a... 

对低温法生产的以AlN为主抑制剂的Hi-B取向硅钢高温退火过程进行了中断实验,借助EBSD及TEM技术对高温退火连续升温过程中织构与析出物的演变进行了研究。实验结果表明,800℃时ODF图出现高斯织构组分,但强度很弱,高斯晶粒偏离角在10°以上;950~1 000℃时高斯晶粒异常长大,偏离角3~6°;高温退火过程析出物主要有球形、规则立方形及不规则多面体形3种形貌,由于渗N的影响,Zener因子先增大再减小,并且析出物在高斯晶界前沿优先粗化。 The annealing process at high temperature of Hi-B silicon steel using low slab reheat temperature and with AlN as the inhibitor has been studied by interrupting test,and the evolution of texture and precipitates during continuous heating-up in the annealing process at high temperature was analyzed by EBSD and TEM. The results showed that Goss texture appears in ODF at 800 ℃,but the intensity of Goss texture was very weak and the deviation angle was more than10°. Goss grains grow abnormally durin... 

本发明揭示了一种无取向硅钢的生产方法。所述生产方法中：按照Si:0.3～1.2％炼钢、制坯；将铸坯加热到1050～1150℃并保温150min以上，而后轧成厚度40～45mm的中间坯，再经精轧、卷取得到厚度为3.00±0.25mm的热轧卷板，精轧开轧温度≤Ar1＝872℃+1000*(11*[Si]‑14*[Mn]+21*[Al])；当Ar1≥1000℃，终轧温度T≤840℃，否则T≤Ar1‑160℃；卷取温度≤550℃；经常化、酸连轧得到0.500±0.005mm的冷硬卷，常化温度为850～950℃；退火温度820～950℃，经成品退火、冷却、涂层和精整，得到无取向硅钢成品。

本实用新型公开了一种变压器铁芯硅钢片的横剪打磨装置，包括出料平台、传送机构和打磨机构，所述出料平台的出料端设置有打磨机构，且两组所述打磨机构对称设置在硅钢片的上下两侧，两组所述打磨机构之间构成打磨通道，所述传送机构靠近于出料平台的出料端设置在出料平台上，且所述出料平台上的硅钢片通过传送机构依次朝向打磨通道内位移，通过两组对称设置的打磨机构对硅钢片的两侧面进行同时打磨，具有较高的打磨效率。

对取向硅钢在不同气氛下的高温退火工艺进行实验室模拟，利用X射线衍射仪（XRD）分析了硅钢退火至900℃和1170℃时的样品表面氧化层和底层的物相组成，采用场发射扫描电镜（SEM）观察了样品表面氧化层和底层在截面方向上的微观形貌特征，并计算了高温退火一次升温阶段氧化反应的吉布斯自由能以及900℃时退火气氛的氧分压。结果表明：当退火气氛的露点温度保持一定时，较高的氢气含量有利于生成完整连续的底层；当退火气氛的水氢分压比保持一定时，在露点温度与氢气含量两者较低的条件下，底层附着性不佳易脱落，较高条件下，底层中夹杂着较多的铁单质；当氧化层中无FeO时，底层完整连续但易脱落，当FeO层较薄时，底层下方存在部分未反应的SiO₂,当FeO层较厚时，底层不完整连续且有分层。 The high temperature annealing process of grain-oriented silicon steel in different atmospheres was simulated in the laboratory. X-ray diffractometer（XRD） was used to analyze the phase compositions of the surface oxide layer and forsterite film of the silicon steel annealed to 900 ℃ and 1170 ℃. Field-emission scanning electron microscopy（SEM） was used to observe the micro morphology characteristics of the surface oxide layer and forsterite film of the samples in the cross section direction. The ... 

研究了薄板坯连铸连轧流程(TSCR)条件下热轧工艺对3.2%Si-0.7%Al无取向硅钢组织、织构演变及磁性能的影响规律。结果表明,提高均热温度和热轧温度有助于获得粗大的变形组织和强烈的{001}〈110〉织构,进而对后续的组织、织构演变进程及磁性能产生有利的遗传影响。与低温均热和低温热轧相比,高温均热和高温热轧得到的最终成品板的再结晶晶粒较粗大,λ纤维再结晶织构较强而γ纤维再结晶织构较弱,磁感应强度较高。 It was investigated that the effects of thin slab cast rolling(TSCR) hot rolling processes on microstructural,textural evolution and magnetic properties of 3.2%Si-0.7%Al non-oriented silicon steel.The results show that much larger hot rolling deformed microstructure and much stronger {001}〈110〉 texture could be obtained by increasing the soaking and hot rolling temperatures,which had good heritable effects on subsequent microstructural,textural evolution and magnetic properties.The final sheets ...