硅钢资料

针对马钢无取向电工钢孔洞缺陷的分布规律及形貌特征,对缺陷样进行了显微分析,并利用生产实绩数据分析了该缺陷产生的原因。结合热轧生产过程,主要通过避免带钢撞击导卫以及降低导卫结瘤的产生等措施,可有效抑制热卷异物压入产生,从而降低冷轧工序孔洞的产生。 In viewing of the distribution and morphology characteristics of the hole defect of non-oriented electrical steel in Maanshan Iron and Steel Co.,Ltd.,the causes of the defect were analyzed by micro analysis of the defect sample and the production data.Combined with the production process of hot rolling,by avoiding the impact of strip steel on the guide and reducing the nodule formation on the guide,the pressing of foreign bodies in hot coiling could be effectively suppressed,thus reducing the fo... 

基于BOF→RH→CSP生产工艺,研究了RH精炼过程钢中夹杂物类型演变及MgO·Al2O3夹杂物形成规律,同时对MgO·Al2O3夹杂物的形成条件进行了热力学计算,借助CFD数值模拟软件研究了RH精炼过程卷渣行为。研究发现,RH精炼过程20和30 min时,w([MgO])/w([Al2O3])为0.005~0.020,未发现MgO·Al2O3夹杂物;RH出站后夹杂物w([MgO])/w([Al2O3])为0.3~0.5,且RH精炼结束后MgO·Al2O3夹杂物占夹杂物总量的58.4%;另外,RH精炼过程钢液表面速度CFD模拟结果为0.57 m/s,大于临界卷渣速度0.45 m/s,且顶渣成分与夹杂物成分相近,存在卷渣现象。热力学计算表明,钢液与炉渣平衡时钢中w([Al])为0.31%~0.37%,w([Mg])为0.00024%~0.00028%,在MgO·Al2O3生成区域之内。减少RH处理过程卷渣,浇铸过程下渣及控制顶渣和包衬相中MgO质量分数可抑制MgO·Al2O3夹杂物形成。 Based on the practical production of non-oriented silicon steel, the evolution of inclusion type and the formation of MgO·Al2O3inclusion were analyzed in the process of BOF→RH→CSP. The thermodynamic conditions for forming MgO·Al2O3inclusion were discussed and the behavior of slag entrapment of molten steel was also simulated by CFD software during RH refining. The results showed that the value of w([MgO])/w([Al2O3]) was in the range of 0.005-0.020 and no MgO · Al2O3 inclusion was observed at 20 ... 

本发明公开了一种高磁感取向硅钢，其含有Fe及不可避免的杂质元素，其还含有质量百分含量如下的下述各化学元素：C：0.02～0.08％，Si：2.0～4.5％，Mn：0.02～0.30％，S≤0.0050％，Als：0.01～0.04％，N：0.002～0.01％，Nb：0.0050～0.0600％；以及P：0.01～0.1％，Sn：0.01～0.30％，Cu：0.01～0.50％的至少其中一种。此外，本发明还公开了上述高磁感取向硅钢的制造方法，其包括步骤：(1)制得板坯；(2)板坯加热；(3)热轧，其包括：粗轧、在热卷箱内卷取保温，以及精轧；其中粗轧结束温度高于970℃；卷取温度为800～1050℃，卷取时间为30～200s；精轧开始温度低于1050℃；(4)冷轧；(5)脱碳退火；(6)渗氮；(7)涂覆退火隔离剂；(8)高温退火；(9)涂覆绝缘涂层和激光刻痕。

本实用新型公开了一种硅钢片冲压模具，包括上模和下模，上模和下模之间通过导向杆连接，下模上设有出料槽，出料槽的底部设有一磨盘，磨盘通过齿轮连接电机。本实用新型结构设计合理巧妙，当硅钢片冲压下落时，磨盘通过电机带动转动，对硅钢片的周围进行打磨，使硅钢片边缘平整，叠铆时上下不易错位。

本发明公开了一种适应高频率工况下低铁损无取向电工钢及其生产方法，所述生产方法包括以下步骤：钢水连续浇铸成板坯—热轧—正火—酸洗—冷轧—连续退火—涂绝缘涂层并固化；所述冷轧步骤中，采用六辊单机架往复式轧机经5道次一次冷轧至目标厚度，冷轧过程中前三道次采用变速异步轧制方法，使钢板表层在剪应力作用下位错密度增加，这样在退火后表层晶粒尺寸细化而心部晶粒粗大，通过本发明的方法可生产得到心部为粗大等轴晶粒，表层为纳米级细等轴晶粒的电工钢产品，该产品的铁损P1.5/50≤2.35W/kg，P1.0/400≤14.0W/kg。

在实验室模拟CSP流程制备了不同含量稀土铈(质量分数0~0.018%)的1.2%Si无取向电工钢,并对其进行1 000℃×5min的再结晶退火处理,研究了铈质量分数对无取向电工钢夹杂物、显微组织、再结晶织构和磁性能的影响。结果表明:随着铈质量分数的增加,微细夹杂物数量、再结晶晶粒尺寸、{100}和{110}织构组分、磁感应强度先增后减,{111}织构组分、铁损先减后增;铈的质量分数为0.005 1%时,钢中的夹杂物数量最少,再结晶晶粒尺寸最大,有利织构最多,磁性能最优,铁损P15/50为3.253W·kg-1,磁感应强度B50为1.751T。 Non-oriented electrical steels containing different contents rare earth Ce element(0-0.018wt%) were prepared in the laboratory by simulated CSP(compact strip production)process,and then recrystallization annealing at 1 000 ℃ for 5 min were performed,the effects of Ce content on inclusion,microstructure, recrystallization texture and magnetic properties of non-oriented electrical steels were studied.The results show that with the increase of Ce content,the amounts of fine inclusion,the size of re... 

本发明涉及取向硅钢技术领域，且公开了一种气耗优化成本较低的取向硅钢高温退火工艺，包括如下步骤：S1、将铸坯装炉装炉前先对炉台利用高压空气进行清扫，将通气管内的粉尘或其它杂质吹扫干净，然后根据钢卷的卷径大小选用与之匹配的料盘和料筐，将铸坯放入炉内；S2、炉台密封将装有铸坯的炉台完全密封。该种气耗优化成本较低的取向硅钢高温退火工艺，在高保温阶段使用氨分解气，而氨分解气相对氢气而言比较稳定，在生产成本上也较氢气低，大大的降低了成本节约了能耗，在低保温阶段是为了消除应力，形成一次再结晶晶粒，进行脱碳，高保温阶段二次再结晶，净化钢质和形成烧结硅酸镁底层，最后退火完成后，完成烧结绝缘涂层、热拉伸平整。

通过对湿H2气氛下,相同退火温度、不同退火时间的CGO硅钢初次再结晶样品进行金相组织观察,并进行了EBSD微观织构分析,研究了CGO硅钢初次再结晶过程中的组织及再结晶织构演变行为。结果表明,在湿H2气氛下,820℃保温,CGO硅钢初次再结晶过程约在120 s时完成。随着退火时间的延长,γ面上{111}<112>织构含量逐渐减少,{111}<110>织构先减少后增多,随着再结晶的完成,部分{111}<112>取向晶粒向高斯{110}<001>取向转化的同时,也向{111}<110>取向转化,高斯{110}<001>织构含量逐渐增多。高斯取向晶粒较多是由{111}<112>取向晶粒转化而来,同时也证明了CGO硅钢高斯取向晶粒的二次再结晶异常长大生长机制为择优形核。 Microstructure development and texture evolution of conventional grain oriented silicon steel,which were annealed at same annealing temperature and different annealing time under wet H2 atmosphere,were investigated through metallographic observation and electron backscattered diffraction analyzing.The results show that the primary recrystallization finishes in 120 s at 820 ℃ under wet H2 atmosphere.With the extending of annealing time,{111}<112> texture decreases,{111}<110> texture d... 

通过对3%Si CGO硅钢进行恒变形速率、不同变形温度下的单道次压缩实验,结合Thermal-Calc软件,金相分析,SEM及EBSD技术,研究了取向硅钢热变形过程中组织和微观织构的变化规律。结果表明:实验钢是在双相区变形,变形后组织主要是铁素体和少量的珠光体。随变形温度的升高,晶粒由长条状变为等轴状,尺寸逐渐变大;CGO硅钢在热变形过程中立方{100}<001>取向是较为稳定存在的。随着变形温度的提高,{111}<110>等取向逐渐转向{110}<1 10>取向,且{110}<1 10>取向逐渐变得锋锐。 3% Si CGO silicon steel was studied at constant strain rate and different deformation temperatures by single-pass compression deformation experiments to reveal the evolution of microstructure and texture during thermal deformation in oriented silicon steel,and the Thermal-Calc software,metallurgical,SEM and EBSD technique was used in the experiment. The results show that experimental steel is deformed at the temperatures of two-phase zone. The microstructure of the deformed steel consists of fer... 

本发明是高磁感取向硅钢的脱碳退火工艺，首先对硅钢卷进行放卷、活套、清洗；再对硅钢进行脱碳、渗氮处理，氨气流量6‑20m3/h、加湿槽温度30‑70℃，脱碳温度780‑880℃、机组速度45‑75m/min、气氛中氢气比例20‑60％、氮气比例40％‑80％，然后冷却到常温；对硅钢进行活套；再对硅钢进行涂覆氧化镁，涂覆量4‑10g/㎡；最后对硅钢进行干燥和收卷成硅钢卷；通过本发明对高磁感取向硅钢的脱碳退火工艺流程进行了优化设计，调整了脱碳退火工艺中氨气流量、气氛、加湿槽水温等参数，优化了高磁感取向硅钢中碳元素、氮元素和氧元素的含量，最终使高磁感取向硅钢实现稳定的性能，磁感达1.92T。

本发明公开了一种用于取向硅钢卷的焊缝切除方法，包括在焊接机组完成钢卷焊接后，在距离焊缝预设距离位置处冲孔；而后，钢卷到达成品退火工序时，利用孔洞检测装置检测焊缝冲孔，并根据焊缝冲孔得到焊缝位置，并记录该焊缝位置；并在分卷工序中，根据记录得到的焊缝位置对焊缝进行切除。这样，该方法利用焊缝冲孔，结合孔洞检测装置，将焊缝位置信息传递到分切工序，使得焊缝识别切除率较高，有效解决了取向硅钢焊缝无法精准定位切除的问题，实现了卷中焊缝多工序结合精准切除。

试验研究了退火温度(850~950℃)和时间(5~18 min)对2.3 mm热轧硅钢板(/%:0.036C,3.15Si,0.21Mn,0.005P,0.007S,0.032A1)6道次轧制的0.35 mm冷轧板组织和织构的影响。结果表明,退火温度越高,晶粒平均尺寸越大,900℃5 min退火时平均晶粒尺寸41.39μm,试样织构主要集中在γ取向线上的{111}<112>织构组分和{111}<110>织构组分;900℃18 min退火时平均晶粒尺寸为48.08μm,试样的{111}面织构和{112}面织构密度都明显减弱,{001}面织构增强,磁性能较优。 The effect of annealing temperature(850 ~950 ℃) and holding time(5 ~ 18 min) on structure and texture of 0.35 mm sheet by 6 passes cold-rolling from 2.3 mm hot-rolled plate of silicon steel(/%:0.036 C,3.15 Si,0.21 Mn,0.005 P,0.007 S,0.032A1) has been tested and studied.Results show that the higher the annealing temperature the coarser the average grain size;As annealing at 900 ℃ for 5 min the average grain size of steel sheet is 41.39 μm,and the texture in sample is mainly concentrated in y orie...