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以能量平衡和辐射换热理论为基础,通过合理假定,建立了硅钢无氧化加热炉数学模型。采用数值计算的方法,通过自编程序,完成对带钢加热过程温度场的仿真。结果显示:数学模型能够反映带钢在无氧化炉内的加热过程,其升温曲线能够与工艺曲线相吻合;现行炉温分布并非最优,数学模型能够为炉温分布的优化、炉段的设计提供理论依据。 Mathematical model of NOF Section of Continuous Annealing Furnace is established based on energy balance and radiation heat exchange. The temperature field of steel is simulated by mathematical computation. The simulating results show that the mathematical model can reflect the heating process of silicon steel in NOF section, and the heat-up curve is coincide with the processing curve. From the results,it is known that the current furnace temperature gradient is not the best, and the mathematica... 
2013-06-28 205 5.8

本发明公开了一种普通级稀土取向硅钢制备方法,通过添加稀土元素,利用第二相作用,对铸坯组织、热轧组织、初次再结晶晶粒和二次再结晶晶粒的影响,改善成品磁性能,即降低铁损,提高磁感。
2021-11-25 205 6.8

利用EBSD技术研究了电工钢中长轴平行于轧向的柱状晶样品在热轧和退火过程中组织和取向的演变规律,并与长轴平行于板法向的样品的已有研究结果进行对比。结果表明,无论柱状晶按何种方向排列,只要表面存在剪切力,热轧后都可形成剪切织构,同时中心形成轧制织构,主要包括旋转立方织构和{112}<1-10>。柱状晶造成的影响主要体现在板中心层,长轴平行于轧向排列的样品热轧时形成的粗大旋转立方晶粒要到脱碳退火后才能完全消除,但破坏了正常的不同取向晶粒间的取向差分布及尺寸均匀性,导致二次再结晶不完全及磁性能降低。 The evolution of microstructure and grain orientation in an electrical steel containing columnar grains with its long axis being parallel to the rolling direction of sheet was studied during hot rolling and annealing by EBSD technique.The results are compared with those of samples containing columnar grains being parallel to normal direction of sheet reported in the reference [3].It was shown that,whether the long axis of columnar grains was arranged in RD or ND,shear textures can be formed in t... 
2011-02-28 205 5.8

本发明公开了一种免常化中间退火的无取向电工钢板,其各化学元素质量百分含量为:0<C≤0.004%、Si:1.0~2.6%、Mn:0.2~1.0%、Al:0.2~1.6%、Ca:0.0003%~0.0035%,余量为Fe和其他不可避免的杂质。此外本发明还公开了上述无取向电工钢板的制造方法,其包括步骤:(1)冶炼和连铸,其中在该步骤不采用电磁搅拌;(2)热轧,其包括:粗轧、精轧、卷取和保温;其中控制粗轧之后、精轧之前的中间坯温度≥950℃;(3)上述热轧步骤后不进行常化中间退火或罩式炉中间退火而直接进行冷轧;(4)连续退火。本发明所述的无取向电工钢板通过采用合理的化学成分和工艺设计,可以在保证较低生产成本的同时,获得高磁感和低铁损的特性。
2021-04-09 205 6.8

本发明涉及一种用于伴随用于生产非晶粒取向的电工钢带的热处理来加工含硅冷轧钢板的方法,其中,钢板2所含硅的重量比例在1.5%和6%之间,并且其中,钢板以带形状态提供并且在热处理期间在连续的过程中运动通过具有加热区域、保持区域和冷却区域的退火设备,其中,钢板在退火设备3沿垂直的主运送方向运动。
2021-08-18 205 6.8

一种超低硫硅钢冶炼工艺方法,属于炼钢技术领域。本发明公开了一种超低硫硅钢冶炼工艺方法,主要步骤包括KR铁水预处理—转炉冶炼—RH真空精炼—连铸保护浇注。在冶炼超低硫硅钢前,铁水包、转炉先处理1‑2炉低硫钢种,清洗设备;KR脱硫采用三次扒渣法,第一次扒除高炉出铁带渣,将铁水S含量脱至目标值后进行第二次扒渣,然后开通铁水包底吹,软吹后进行第三次扒渣,脱S后铁水S≤0.0005%,铁水兑入转炉后,热态下清理铁包结渣;转炉使用硫含量小于35ppm的低硫废钢,且废钢比不超过15%;RH和连铸过程均使用低硫合金及原辅料。本发明可使连铸结晶器钢水中S含量小于15ppm达标率由原来的48.6%左右提高至95%以上。
2021-01-21 205 6.8

对低温加热工艺生产的以AlN为主抑制剂的高磁感取向硅钢高温退火过程进行中断实验,借助电子背散射衍射技术对高温退火过程中高斯晶粒的演变进行了研究.在升温过程中高斯晶粒平均尺寸先减小再增大.800℃时取向分布函数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;900℃时高斯晶粒平均生长速率超过其他晶粒;950~1000℃时高斯晶粒异常长大,偏离角3°~6°;在1000℃之前高斯取向晶粒相比于其他晶粒没有尺寸优势. The high-temperature annealing process of high permeability grain-oriented silicon steel with AlN as an inhibitor was studied by interrupting test.The evolution of Goss texture in this process was analyzed by electron back-scattered diffraction.It is found that the Goss grain size first decreases and then increases with the rise of temperature.Goss texture appears in the orientation distribution function at 800 ℃,but the intensity is very weak and the deviation angle is more than 10°.The average... 
2014-03-28 205 5.8

本发明公开了一种改善高牌号无取向硅钢表面色差缺陷的方法,属于冷轧卷板表面质量改进技术领域。所述方法为:将连铸坯依次进行热轧、常化、酸洗、单机架轧制和连续退火工序,其中按重量百分数计,所述的连铸坯含有如下成分:C<0.003%、Si1.6~2.0%、Mn0.35~0.65%、Al0.35~0.65%、P<0.02%、S<0.0025%、余量为Fe和其他不可避免的杂质元素,所有成分合计100%;其中热轧工序的卷取温度为620~640℃。本发明所述方法能够降低带钢表面氧化铁厚度并改变带钢表面氧化铁结构,改善高牌号无取向硅钢表面色差缺陷。
2021-03-25 205 6.8

阐述了电工钢在\"双碳\"中的作用,强调了电工钢的生产工艺技术及在减少碳排放、降低能耗中的作用,对下游能效升级带来明显的节能及降碳成果。同时,分析了2021年电工钢的生产运行情况,介绍了电工钢的未来发展,并针对如何减少碳排放以及生产更多的更低铁损、更高磁感的电工钢谈了几点启示。 The effects of electrical steels on carbon peak and carbon neutralization were expounded,especially on the achievements of obvious energy saving and carbon reduction to the downstream energy efficiency upgrading bringing from the production technology of electrical steels and their effects to reducing carbon emission and energy consumption.Meanwhile the production situation of electrical steels in 2021 was analyzed,and the future development of electrical steels was introduced,and some advices w... 
2022-01-28 205 5.8

采用光学显微镜和X射线衍射仪研究了常化退火处理对无取向硅钢热轧板和成品退火板显微组织和织构的影响。结果表明:常化退火处理消除了热轧板中的变形组织,促使变形晶粒完成再结晶;常化退火处理使高斯织构和立方织构易通过再结晶在变形带内形核和长大,可显著降低成品退火板的{111}和{112}不利织构组分的占有率,提高{100}和{110}有利织构组分的占有率,从而有利于提高无取向硅钢成品板的磁性能。 The effect of normalizing annealing treatment on microstructure and texture of non-oriented silicon steel hot rolled plates and final products were investigated by means of optical microscope and X-ray diffractometer analysis.The results show that the deformed microstructure of the hot rolled plates transformed into recrystallized grain after normalizing annealing treatment.The grains of Goss texture and cubic texture crystallographic orientation were formed and grown by recrystallization in the... 
2013-02-28 205 5.8

采用取向分布函数分析了无取向电工钢不同再结晶退火温度下的织构变化及织构对磁感应强度和铁损的影响,并计算了无取向电工钢的磁晶各向异性能。结果表明,随着实验钢的再结晶退火温度升高,Goss织构和立方织构组分显著增强,而{111}面织构强度却减弱。较高的退火温度有利于减小织构因子,提高磁感应强度。磁晶各向异性能计算结果显示,随着再结晶退火温度升高,无取向电工钢板的磁晶各向异性能降低。 The recrystallization texture and the relationship of texture to magnetic induction intensity and core loss of a non-oriented electrical steel were investigated by orientation distribution function analysis. The magnetic anisotropy energy of the steel was calculated also. The results show that,the intensity of Goss texture and cubic texture increases,but the intensity of { 111} texture decreases with increasing recrystallization annealing temperatures of the steel. The higher annealing temperatu... 
2014-02-28 204 5.8

本发明涉及一种硅钢热处理方法,尤其涉及一种取向硅钢极薄带绝缘层涂覆方法,包括以下步骤:(1)接入普碳钢引带的准备工作;(2)各炉段张力的设定工作;(3)炉内气氛及温度的调节工作;(4)绝缘层厚度及厚度的检测工作;(5)极薄带涂层涂覆及烘干工作;(6)极薄带表面绝缘涂层及磁性能检测工作。本发明采用与极薄带厚度相当的普碳钢作为引带,通过引带测试产线张力和绝缘层涂覆的厚度,一方面可通过普碳钢薄带的运行加速炉内温度和气氛的稳定性,节约炉内稳定时间;另一方面可通过成本较低的普碳钢检测炉内张力和温度的设定,及绝缘涂层的涂覆效果,避免开始采用硅钢带出现断带,及涂覆不合格后造成产品报废带来的成本升高。
2021-12-18 204 6.8

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