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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。
2021-10-20 136 6.8

借助高温激光共聚焦显微镜,在线观察了不同Mn含量的无取向硅钢中夹杂物的尺寸、类型、数量变化。结果表明,Mn含量(质量分数)为0.77%、0.32%时,试样中的夹杂物数量分别约为1000万个/mm3、1600万个/mm3。Mn含量较高的钢种,会优先析出球形、椭球形MnS夹杂物,其析出数量较少,尺寸相对较大,可以有效抑制AlN、CuxS夹杂物析出;Mn含量较低的钢种,会在试样再加热后冷却过程中,先析出相当数量MnS夹杂物,并作为AlN夹杂物析出核心,形成MnS+AlN复合夹杂物。这种复合夹杂物数量较多,尺寸也较大。 Based on the high temperature confocal microscope, the chage of size, type, and quantity of inclusions in non-oriented silicon steels with different Mn content were observed by in-situ SEM. Results show that the inclusion quantities are 10 million per mm3 and 16 million per mm3,while the mass fractions of Mn are 0.77% and 0.32%, respectively. In the silicon steel with higher Mn content, the spherical and ellipsoidal MnS inclusion will precipitate first, which can retard the precipitation of AlN ... 
2014-05-28 136 5.8

传统轧制法制备6.5wt.%高硅钢过程中温轧工艺具有显著不同于3 wt.%Si的电工钢的特点及组织织构特征,是开发新型基于织构优化的高硅钢的关键环节。采用EBSD技术对通过热轧、温轧、冷轧及退火工艺制备0.3mm厚的6.5wt.%Si电工钢板的组织和织构进行分析,重点研究温轧过程中的中间退火和大、小压下率组合以控制织构。结果表明,在热轧退火板是部分再结晶组织的情况下,一次性温轧或先小形变量、中间退火后再大形变量的工艺可得到更多的Goss晶粒;经过最终退火后Goss取向会发生偏转,形成部分黄铜取向,而{111}〈112〉取向的晶粒内形核生成近Goss取向的再结晶晶粒;大压下量轧制是最终组织中{111}取向晶粒较多的主要原因。 Warm rolling,a key process of developing new type high-Si electrical steel based on texture optimization,has significant different characteristics from 3wt% Si steel in conventional preparing process. 0. 3mm thickness 6. 5wt. % Si steel,obtained by a series of processes including hot and warm rolling,intermediate annealing and then cold rolling,was analyzed from microstructure and texture by EBSD,which are utilized mainly for investigating the intermediate annealing process and the combination o... 
2013-06-28 136 5.8

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... 
2011-02-28 136 5.8

采用电解法和扫描电镜研究了300 t转炉-RH精炼钙处理对无取向硅钢板(%:≤0.005C、1.2~2.2Si、0.2~0.6Mn、≤0.20P、≤0.005S、0.2~0.6Al、0~0.01Ca)中夹杂物的影响。结果表明,钢中Al含量为0.25%和0.35%时,钢中溶解氧均小于1×10-4%,钙处理后都会产生CaS夹杂物,尤其是含0.35%Al的钢水;钙处理可以有效减少钢中的夹杂物数量,尤其是0.5μm以下的微细夹杂物数量;钙处理后夹杂物的种类以AlN、CaS为主,同时还含有少量的氧化物夹杂物以及AlN-CaS复合夹杂物,尺寸主要为1.5~5.0μm。 The effect of 300 t converter-RH refining calcium treatment on inclusions in non-oriented silicon steel sheet (%:≤0.005C,1.2~2.2Si,0.2~0.6Mn,≤0.20P,≤0.005S,0.2~0.6A1,0~0.01Ca) has been studied by electrolysis and scanning electron microscope.Results show that with 0.25%and 0.35%Al content in steel,all the dissolved oxygen in liquid is less than 1×10-4%,and the CaS inclusions are produced after calcium treatment,especial for the liquid containing 0.35%Al;the amount of inclusions in ste... 
2011-01-28 136 5.8

试验研究了球刻痕法对高磁感取向硅钢的铁损、矫顽力、相对磁导率、巴克豪森噪声等磁学性能的影响.研究结果表明:经过球刻痕处理后,高磁感取向硅钢的铁损明显降低,矫顽力下降,8 mm球刻痕过后铁损值与矫顽力分别下降16.2%和14.7%,且铁损和矫顽力均随刻痕间距降低而减少.刻痕后的高磁感取向硅钢磁导率在高磁感应强度下明显上升,刻痕后巴克豪森噪声值明显降低,经过对比分析确定8 mm为球刻痕的最佳刻痕间距.从磁畴观察、细化磁畴的原理等方面解释了细化磁畴对高磁感取向硅钢性能的影响原因. The effects of the ball scribing on magnetic properties of high permeability grain-oriented silicon steels,including the iron loss,coercive force,relative permeability,and Barkhausen noise were investigated. The results showed that the iron loss and coercive force of the high permeability grain-oriented silicon steels apparently decreased 16. 2% and 14. 7% respectively after 8 mm ball scribing and they both decreased with the decrease of the scribing spacing at the same magnetic flux density. At... 
2013-11-28 136 5.8

本发明提供能够制造磁特性与被膜密合性优异的电磁钢板的新颖并且得以改良的电磁钢板的制造方法。一种电磁钢板的制造方法,其特征在于,其包括以下工序:使电磁钢板与溶液相接触,所述电磁钢板以质量%计含有C:超过0%且0.10%以下、Si:2.5%以上且4.5%以下、Mn:0.01%以上且5.0%以下、S、Se及Te中的1种或2种以上的合计:超过0%且0.050%以下、酸可溶性Al:超过0%且5.0%以下、N:超过0%且0.015%以下、P:超过0%且1.0%以下、剩余部分由Fe及杂质构成,其中,上述溶液含有Cu、Hg、Ag、Pb、Cd、Co、Zn及Ni中的1种或2种以上,各元素的浓度合计为0.00001%以上且1.0000%以下。
2021-06-23 135 6.8

本发明涉及取向硅钢技术领域,且公开了包括以下步骤:步骤一:冶炼,冶炼经转炉和RH精炼后得到钢水,在进行冶炼的过程中通入空气并设置总进气量100‑300Nl/min,且通入的空气中氧含量为20‑21%之间。该磁性优良的高磁感取向硅钢的气氛控制工艺,通过在不同的流程中,加入一定配比的氧气和氮气的含量,有效的提升每个阶段的气氛控制精度,从而得到最终的高磁感取向硅钢达到优良,避免了因气压、流量等因素影响最终高磁感取向硅钢磁力效果,炉渣中FeO含量减少,提高钢回收率和炉衬寿命,进而也起到降低生产成本的效果,且进行精确的气氛控制,使得在进行高磁感取向硅钢的冶炼中,使得冶炼的效果更好,使得冶炼出来的高磁感取向硅钢的磁性更加的优良。
2020-12-14 135 6.8

研究了应用电感耦合等离子体质谱法(ICP-MS)测定硅钢中痕量铜和镍的分析方法。采用硝酸分解样品,通过内标校正和基体匹配消除了基体干扰的影响,同时根据测量时存在的质谱干扰情况,选择同位素65Cu和60Ni作为测定元素和通过调节仪器参数使双电荷离子的产率最低,以减少带来的干扰。该方法用于硅钢中痕量铜和镍的测定,所得的结果与ICP-AES法测定结果完全吻合,各元素测定结果的RSD值小于5%,加标回收率为97.3%~100.3%。 A method for the determination trace copper and nickel in silicon steel by inductively coupled plasma mass spectrometry(ICP-MS) was studied.The samples were dissolved in HNO3.The effect of matrix interference was eliminated by internal standard correction and matrix matching.Meanwhile,according to the mass spectral interferences in determination,the isotopes including 65Cu and 60Ni were used as measuring elements.The yield of double-charge ions were minimized by adjusting instrumental parameters... 
2011-05-28 135 5.8

本发明涉及一种永磁电机铁芯电工钢材料优化匹配方法及系统,涉及电机技术领域,包括根据永磁电机的应用场合,确定设计指标和永磁电机模型,并根据永磁电机模型确定电机性能;判断永磁电机的电机性能是否符合设计指标,若是确定第一集合、第二集合以及第三集合的交集;该交集的元素为永磁电机的电机性能满足第一指标、第二指标以及第三指标时对应的硅钢材料。本发明综合考虑了电机的电磁场、温度场、应力场性能,可以在多种电工钢材料中选出与该种转子结构匹配度最高的电工钢材料。
2021-08-24 135 6.8

根据本发明的一个实施例的无取向电工钢板,以重量%计,所述钢板包含Si:1.5%以下、C:0.01%以下且0%除外、Mn:0.03至3%、P:0.01至0.2%、S:0.001至0.02%、Al:0.01%以下且0%除外、N:0.005%以下且0%除外、和Cu:0.02至0.3%,Ca和Mg各自单独或以合计含量包含0.0001至0.005重量%,Sb和Sn各自单独或以合计含量包含0.001至0.2重量%,余量包含Fe和不可避免的杂质。
2020-12-17 135 6.8

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... 
2013-06-28 135 5.8

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