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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。
2021-09-30 207 6.8

硅钢工业退火炉温度控制具有强耦合、纯滞后、多扰动等特点,它的控制方法代表着一类非线性系统控制的解决方法。以硅钢工业退火炉温度为控制对象,在双交叉限幅控制的基础上引入了智能学习系统,形成了基于智能学习系统的双交叉限幅控制方法来解决此类非线性系统的控制问题,并通过模块化的编程来实现其功能。结果表明:与传统的PID控制相比,该控制方法的控制精度、抗扰性等控制指标有明显提高,是解决此类非线性控制的一种有效方法。 The temperature control of silicon steel industrial annealing furnace has the features of strong coupling,pure lag,multidisturbance. The control method represents the solution of a class of nonlinear control systems. The control object is the temperature control of silicon steel industrial an-nealing furnace, the intelligent learning system based on Double Across Limit Control is introducedand used to solve control problem of this kind of nonlinear system, and the module programming isused to re... 
2014-05-28 176 5.8

本发明公开了一种消除取向硅钢单边浪缺陷的方法,其包括如下步骤:1)、制作专用盖板;所述专用盖板包括环形板,所述环形板外边缘设有多个剪开处;2)、将待装炉的取向硅钢钢卷吊运至高温退火炉炉台;3)、将专用盖板铺于取向硅钢钢卷上端面外圈;4)、将专用盖板上的各剪开处向下弯折,勾住取向硅钢钢卷外沿;5)、扣上内罩,内罩底边砂封;6)、钢卷进炉,完成高温退火过程。本发明能有效保护钢卷边部,防止钢卷上端面翻边;该方法还能将钢卷内部水分排出,避免钢带表面氧化。
2021-01-05 156 6.8

【作者】 王爱华; ...
2013-10-28 135 5.8

通过对激光粒度分析仪测量硅钢级氧化镁(MgO)的分析条件进行优化,如分散介质、分散方式、样品预处理、仪器暗淡度等,探讨了硅钢级MgO粒度范围测量重现性较好的试验方法,满足硅钢生产过程控制对MgO粒度的要求。 The analysis condition of the laser particle size analyzer on grain oriented silicon-steel grade magnesium oxide is optimized,including the dispersion medium,dispersion methods,sample preparation,and instrument obscuration,etc.Therefore,particle size measurement with good reproducibility for silicon-steel magnesium oxide is discussed,which may meet the requirement of MgO particle size for silicon-steel process control. 
2011-02-28 209 5.8

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. 
2014-10-28 183 5.8

一种使铋收得率不低于70%的含铋取向硅钢冶炼方法,其步骤:常规转炉冶炼并出钢至钢包中;RH精炼处理,其间:控制渣层厚度不低于45mm,且渣成分在:Al2O3:25~35wt%,CaO:40~50wt%,MgO:10~15wt%,且结束时钢水温度控制在1530~1590℃;真空精炼结束后进行镇静;后将铋颗粒与石灰石颗粒混装容器加入钢水中;保护浇注和后工序生产。本发明将铋颗粒与石灰石颗粒混合加入,石灰石在钢液中分解产生的气体不仅可以减缓铋颗粒下沉速度,使铋能够快速扩散均匀,更主要的是还可以强化铋颗粒在钢液中的扩散,最终可获得铋收得率高于70%即在71~75%的理想效果。
2020-12-22 198 6.8

本发明公开了一种精确控制高磁感取向硅钢板坯Als含量的方法,转炉出钢20~40秒时,定量加入金属铝,加入量按0.15~0.35kg/吨钢;转炉出钢及合金加入后,底吹搅拌均匀3~5min后,加入一定量金属铝后再底吹搅拌均匀3~5min后将钢水吊运至RH开始精炼处理,铝加入量按[WAls目标+(0.009~0.0120%)]范围控制;钢水在RH精炼过程经过2~3次酸溶铝的成分微调后结束精炼,精炼结束Als按[WAls目标+(0.0030~0.0045%)]目标范围控制;RH精炼结束样酸溶铝检测结果出来后,在连铸开浇前,在钢包内补加铝线使钢液中Als在[WAls目标+Δ浇注Als损]目标范围内;连铸进行氩气环流保护浇注,其中氩气环流流量控制在6~12m3/h;浇注成合格板坯后按正常工艺进行热轧及后工序生产。
2021-12-08 200 6.8

运用电子背散射衍射(EBSD)和X射线衍射(XRD)技术对硅钢热轧板的织构在板厚方向的分布进行了研究,并分析了两种织构测量方法的特点。EBSD技术能直观给出板厚方向的微观织构,XRD能得到钢板的宏观统计织构信息,结合两种技术的分析,能更直观更精确的研究不同织构在板厚方向的分布。 The texture distribution along the thickness of the silicon steel has been investigated by electron backscatter diffraction(EBSD) and X-ray diffraction(XRD) technique.The characteristics of two technique of texture analysis have been investigated.Combined the two techniques,the texture distribution along the thickness of the silicon steel could be realized distinctly and accurately. 
2011-02-28 183 5.8

电工钢反复弯曲次数是电工钢性能检验的重要指标之一,直接影响到用户在使用电工钢过程的机加工性能。主要分析了试样宽度、试样张力、晶粒取向、反复弯曲设备等因素对电工钢反复弯曲试验的影响,并对各个因素的影响程度进行量化以及原因探讨,从而归纳形成各影响因素的基本规律,以便为电工钢实际生产、用户使用提供科学指导。结果表明:试样宽度增加,反复弯曲次数也会不断增加,晶粒位向对取向电工钢的反复弯曲次数影响较大,当支座顶部到拨杆底部的距离减小或拉紧力增加时,反复弯曲次数会不断减小,但当拉紧力达到60N以上时,对反复弯曲次数影响不大,试样经退火后,反复弯曲次数略有上升。 The reverse bend number is an important performance of electrical steels′capabilities,affecting the machining performance directly when the customers used.It investigated some factors,such as sample′s width,sample′s tension load,grain orientation and equipment,how to effect the reverse bend test for electrical steel,measured the influence degree,and discussed the reason,in order to form basic rules which could be guided the manufacturing and using for electrical steel.Results showed that the rev... 
2014-07-28 185 5.8

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。
2021-07-13 228 6.8

在50Kg氧化镁坩埚真空感应炉上进行高硅电工钢的脱氧试验。结果表明,通过控制原料的成分、高真空下的碳氧反应和炉衬分解向钢液中的供氧,可使钢液的总氧含量≤15×10-6;在维持高温高真空条件下,当钢液中的反应达到一定程度后,延长精炼时间并不能降低钢液的总氧含量;完成精炼后加入硅钙合金沉淀脱氧可进一步降低钢液的总含氧量,但脱氧效果有限。 The test of high-silicon electric steel deoxidation has been carried out in 50Kg vacuum induction furnace with magnesium oxide crucible.Results show that the total oxygen could be ≤15×10-6in molten steel by controlling material components,carbon-oxygen reaction in high vacuum and oxygen contamination from crucible materials on molten steel;And when the reaction was carried through to a certain extent,total oxygen in molten steel could not be reduced by the extension of refining period in high va... 
2011-02-28 196 5.8

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