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【作者】 严伟明; ...
2013-09-28 120 5.8

采用热模拟方法及EBSD技术,研究Fe-3 wt%Si电工钢在不同温度下组织的动、静态再结晶及晶粒取向特征,特别是少量奥氏体对铁素体动、静态再结晶组织及取向的影响。结果表明,不同温度形变的组织主要分三类:形变长条铁素体、珠光体和等轴细小铁素体。长条形变铁素体内发生动态回复或连续式的动态再结晶,奥氏体周围的铁素体动态再结晶加速,部分以传统的不连续方式动态再结晶。铁素体、奥氏体都可发生静态再结晶。奥氏体的静态再结晶在1050℃以上明显,铁素体的静态再结晶随温度的升高逐渐进行,最显著的再结晶发生在1050℃。不同温度形变的样品,其形变晶粒取向主要以<111>和<100>为主,小等轴铁素体晶粒除与大形变铁素体取向相近外,出现了<110>取向及其它取向。 Static and dynamic recrystallization and grain orientations in a hot-compressed Fe-3 wt% Si electrical steels were studied at different temperatures using Gleeble simulator and EBSD technique,particularly focusing on the effect of small amount of austenite on ferritic microstructure and orientations.The results show that microstructure of the compressed steel,depending on deformation temperature,consisted of elongated and deformed ferrite,pearlite and fine equal-axed ferrite.The elongated ferrit... 
2011-01-28 183 5.8

本发明公开一种硅钢级氧化镁制备方法、硅钢级氧化镁保护膜,涉及氧化镁制备技术领域。将得到的粗氧化镁产品进行净化处理;将净化处理后的粗氧化镁产品与金属镁碳还原剂,在真空状态下,利用真空碳热还原技术进行金属镁的置换,制得金属镁;金属镁碳还原剂与粗氧化镁产品的质量比为(1~1.5):1;制得的金属镁在纯氧下制得氧化镁;将制得氧化镁根据实际需求获得不同粒径硅钢级氧化镁颗粒。本发明产品各项指标优于企业标准的硅钢级氧化镁。而且不会受原料中含有的钙等杂质的影响,产品纯度很容易达标,同时,还存在能耗较低、生产成本低等优点,解决了业在降低能耗方面的突破可应用于工业化生产。
2021-11-22 129 6.8

对取向硅钢熔融态钢液进行处理,对比研究了不同脉冲参数的作用效果。结果表明,电脉冲对钢锭晶粒组织具有明显的细化作用,凝固组织等轴晶比例大幅上升。在脉冲电容、频率、处理时间和电压中,影响等轴晶比例的最显著性因素为脉冲频率;最优正交实验参数为:电容1 200μF,脉冲频率1 Hz,处理时间5 s,脉冲电压800 V;随着输入能量的增大,等轴晶率先增大后减小,脉冲输入能量为某值时,等轴晶率最大,通过经典形核理论和热力学对这一现象进行了解释。 Research on the influence of the electric pulse on the solidification structure of oriented silicon steel was preformed.Electric pulses in different parameters were applied to molten steel and results were compared.The result shows that solidification structure of oriented silicon steel can be improved by the electric pulse,and the equiaxed crystal ratio increases obviously.Among the four parameter factors of electric capacity,frequency,applied time and voltage,the most effective factor is frequ... 
2011-01-28 149 5.8

介绍在取向硅钢生产中抑制剂的作用以及多元抑制剂的机理和应用情况,分析多元抑制剂方案中各种元素对高磁感取向硅钢性能的影响,并根据生产实践提出了进一步研究的方向. The role of an inhibitor in the production of grain oriented silicon steel,and the mechanism of multiplex inhibitor in the production are described in the present article.In addition,the influence of various elements in the multiplex inhibitor on the performance of grain oriented silicon steel with high magnetic induction is elucidated.Further work needed in this research is also indicated. 
2013-01-28 136 5.8

运用EBSD和光学显微镜,研究了0.25%~0.45%Cu对无取向电工钢热轧板显微组织,成品板显微组织、织构和磁性能的影响。实验结果表明:卷取过程中Cu元素在热轧板表层的偏聚作用显著阻碍了热轧板表层再结晶晶粒长大,导致热轧板表层晶粒尺寸随着Cu含量增加而逐渐较小,但热轧板中间晶粒尺寸变化不大。同时发现Cu元素能够明显改善织构类型,使有利织构组分增加,不利织构组分减少,同时减弱织构强度。从实验结果可知0.35%Cu能够显著改善电工钢的磁性能,铁损P15/50最低达到4.1 W/kg,磁感B50最高值达到1.8 T。 Effects of high content Cu on microstructure of hot rolled plates and microstructure,texture and magnetic properties of annealed finish product plates of non-oriented electrical steel were examined by means of EBSD technique and optical microscope. The results show that surface segregation of Cu significantly hindered recrystallized grain growth of surface layer in hot rolled plate during the coiling,as a result,the surface grain sizes of the hot-rohed plates decrease with the increase of Cu con... 
2013-11-28 130 5.8

研究了卷取工艺对一种新型含铜无取向电工钢晶粒尺寸、织构演变、铁损和磁感应强度的影响。结果表明,试样织构组分主要为{111}、{112}、{100}和高斯织构,在550℃卷取、保温2~3h,{100}织构有增强趋势,磁感应强度较高,铁损较低。 The effects of coiling process on grain size,texture,core loss and magnetic induction of a new cold rolled non-oriented electrical steel with copper were investigated.The results show that there are mainly {111},{112},{100} and {110}<001> texture.Coiling at 550℃and keeping for 2~3 hours,the {100} texture is enhanced,magnetic induction is higher and core loss is lower. 
2011-03-28 145 5.8

采用取向分布函数和取向线分析方法对低温板坯加热取向硅钢从热轧到初次再结晶工艺阶段的织构进行了研究。研究表明:一次冷轧后各层的织构组分与热轧板各层面的织构组分存在着继承关系,次表层存在很强的{001}<110>织构,中心层的织构和热轧板的中心层相似,存在强的{001}<110>和{112}<110>织构;中间退火后发生再结晶,各织构组分的强度有所减弱,Goss织构组分再次出现;二次冷轧后沿厚度方向上的织构不均匀性不明显,{111}<112>织构强度最高,几乎是其他织构组分的1倍,{001}<110>织构大幅降低;初次再结晶后织构沿厚度方向没有明显的不均匀性,{111}<110>为最强的织构组分,并且具有一定强度的Goss位向。 The texture from the first cold rolling to the primary recrystallization of low temperature slab reheating grain-oriented electrical steel were researched by orientation distribution function and orientation distribution intensity technique.The results show that after the first stage of cold rolling,there is a strong {001}<110> texture in the subsurface and the texture in center layer is very similar to the center layer of hot band which has strong {001}<110> and {112}<110> tex... 
2011-08-28 173 5.8

本发明涉及电工钢的生产方法,更具体地说,涉及一种预应力生产中低牌号无取向电工钢的方法,包括铁水预处理;预处理后的铁水进行转炉冶炼并吹氩脱氧;吹氩后的钢水送入精炼炉中进行冶炼并加入低碳合金进行合金化;合金化处理的钢水通过薄板坯连铸机铸成板坯并采用薄板胚连铸连轧生产工艺进行轧制获得热轧板;所述热轧板经过酸洗冷轧,随后进行预应力拉伸并退火,采用涂层进行涂镀、烧结后卷取。本发明采用预应力拉伸,改善无取向电工钢退火前钢板内部应力的分布,制备的冷轧无取向电工钢产品的电磁性能P15/50≤5.4W/kg,磁感应强度≥1.72T,板形同板差≤8um。
2021-11-29 154 6.8

采用化学气相沉积(CVD)渗硅处理工艺连续制备6.5%Si高硅钢,具有优质的软磁性能,通过理论研究化学反应并且用简单的试验设备做进一步的探讨。根据试验的结果对连续制备6.5%Si高硅钢的CVD工艺构造提出全面、有效的建议,实现制备6.5%Si高硅钢系统。 CVD method for continuously manufacturing 6.5%Si Steel Sheet has excellent soft magnetic.Carried out a theoretical study of related chemical reaction and performing basic research with a simple test apparatus.Based on the results,finally proposed an overall process configuration to realize such a production-CVD method for continuously manufacturing 6.5%Si Steel Sheet. 
2011-12-28 139 5.8

本实用新型公开了一种电工钢表面清洗装置,包括机架、第一传送链和叶片,所述机架的上端固定有顶板,且顶板的内部连接有加料杆,并且加料杆的上端内部设置有固定帽,所述顶板的侧面固定有第一电动机,且第一电动机的一端连接有丝杆,所述丝杆的外侧设置有电动推杆,所述第二转动轴的侧面连接有第二传送链,所述顶板的下端连接有连接架,且连接架的内部设置有第三电动机,所述连接架的底部设置有第二清洁杆,所述机架的内部开设有固定孔。该电工钢表面清洗装置,往加料杆的内部加入清洁液,清洁液会被加料干底部的海绵吸收,当料与加料杆的底部摩擦时,清洁液就会附着在料的表面,从而实现定量的往装置的内部加入清洁液。
2020-12-14 167 6.8

本申请涉及硅钢制造技术领域,尤其涉及一种去除耐热刻痕取向硅钢中熔覆物的化学试剂及其方法。所述化学试剂的组分以质量分数计包括:强酸溶液:8%~20%;酸性氧化剂:5%~15%或助剂:5%~20%;其余为溶剂;其中,所述强酸溶液包括硫酸、盐酸和硝酸中任意一种。本申请实施例提供的该方法,通过10%~20%强酸溶液,可快速有效地去除取向硅钢刻痕处的熔融物,而酸性氧化剂:5%~15%,或助剂:5%~20%结合合适浓度的强酸溶液,可以将取向硅钢的基体破坏降到最小,两种综合作用,得到表面平整的耐热刻痕取向硅钢。
2021-11-17 126 6.8

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