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本发明提供一种线状槽的形成图案,其兼得低装配系数化的效果和高磁通密度。在钢板的表面具有多个在横切该钢板的轧制方向的方向延伸的线状槽的方向性电磁钢板中,在上述线状槽相互间的上述钢板的表面形成从该表面凹陷的凹型缺陷,将上述钢板的上述凹型缺陷的体积分率相对于不存在该凹型缺陷的状态的钢板设为0.0025vol%~0.01vol%,以每1m2钢板为30个~200个的频率形成切断上述线状槽的上述延伸的中断部。
2021-03-04 216 6.8

本发明提供一种以热轧卷为单元观察时具有在长边方向整个长度上均匀的织构,磁特性的变动小的取向性电磁钢板的制造方法。上述取向性电磁钢板的制造方法,包括如下步骤:将具有规定的成分组成的钢坯热轧而制成热轧板,将上述热轧板退火而制成热轧板退火板,对上述热轧板退火板实施1次或者隔着中间退火的2次以上的冷轧而制成最终板厚的冷轧板,对上述冷轧板实施一次再结晶退火和二次再结晶退火;至少1次冷轧的总压下率为80%以上,并且利用连轧机进行,利用上述连轧机的至少一个机架进行的轧制在压下率为30%以上且上述机架的工作辊的咬入温度T0℃的条件下进行,其中,将上述热轧板退火板的前端和尾端中的一方或两方的上述工作辊的咬入温度设为70℃以上且比上述钢板的温度T0℃高10℃以上的温度。
2021-06-28 216 6.8

本发明公开了一种新能源汽车驱动电机用低铁损高强度无取向电工钢及其制造方法,所述无取向电工钢的化学成分及重量百分比包括C:0.001‑0.005%、Si:2.4‑3.0%、Mn:0.25‑0.5%、Al:0.70‑1.10%、P:≤0.02%、S:≤0.005%、0.015%≤Ce+Sn≤0.035%,余量为铁和不可避免的杂质,本发明通过加入Ce和Sn,净化钢质、微合金化提高无取向电工钢强度和磁性能,不需要添加固溶金属元素,且避免了高Si体系下的轧制困难问题,且不需要高温退火,解决了退火温度过高使晶粒异常长大,晶粒尺寸均匀性降低的问题,生产出的无取向电工钢具有较高强度的同时,还具有优良的磁性能。
2021-10-29 216 6.8

热轧轧制工艺对产品性能和轧制稳定性影响很大,对中低牌号无取向电工钢,当在两相区轧制时,热轧塑性明显降低,板形变坏,易出现边裂等情况。以50W1000为例,通过对其变形抗力进行研究,得出把两相区控制在F4与F5之间为最佳轧制工艺的结论。在此基础上制定了一套较为合理的热轧工艺制度。采用新的轧制工艺后,50W1000热轧精轧的稳定性明显改善,热轧产品合格率由开发初期的40%左右提高到95%以上。 The hot rolling process has great influence on product′s performance and rolling stability.For the low medium grade non-oriented electrical steel,when non-oriented electrical steel is rolled in tow phase region,the hot rolling plasticity reduces obviously,the shape of strip goes bad and easily to crack at the edge.The deformation resistance of 50W1000 steel was investigated.The results show that the optimal rolling process is to control the two phase region between F4 and F5.Based on the results... 
2011-03-28 215 5.8

对硅钢板材分别进行异步和同步轧制,研究了轧制参数包括速比、压下量和道次对板材表面显微组织的演变的作用.结果表明,异步轧制硅钢板材表面形成了晶粒尺寸为10~50 nm,取向接近随机分布的纳米晶,而同步轧制板材的表面只形成了位错胞,证明异步轧制可以诱发表面纳米化.异步轧制板材表面纳米晶的形成过程为:在剪切力的反复作用下,高密度位错形成、滑移、湮灭和重组形成亚微米尺度的亚微晶/位错胞.随着压下量和轧制道次增加,高密度位错重复以上过程使晶粒尺寸减小、取向差增大,最终形成取向接近随机分布的纳米晶组织.大压下量和多道次是异步轧制诱发板材表面纳米化的关键,而速比的增加可以加快纳米化进程. Surface nanocrystallization(SNC) can effectively enhance the surface and global properties of the metallic materials,such as microhardness,intensity,fatigue,wear and corrosion resistances,therefore provides more promising practical industrial applicability.Up to now,several SNC treatment methods were developed based either on the principles of ball impactions or friction sliding,however,difficulty still exists for the surface treatment of large-dimensional samples with high efficiency.Recently,m... 
2014-09-28 215 5.8

本发明提供了一种无取向电工钢,以质量百分比计,其成分包括C:0.0010~0.0050%,Si≤2.5%,Al≤0.01%,Mn≤0.80%,P≤0.10%,S≤0.0070%,N≤0.0030%,其余为Fe及不可避免的杂质。本发明还提供了一种无取向电工钢的制备方法。本发明提供的一种无取向电工钢,不添加偏析或稀土等贵重元素且磁性能好、成材率高,本发明提供的无取向电工钢制备方法,工艺流程简单、生产周期短、制取成本低,且无需热轧板常化。
2021-12-21 215 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... 
2013-06-28 215 5.8

结合工业化生产的高效硅钢,进行了RH精炼稀土处理试验研究。针对不同的稀土处理条件,观察了夹杂物的形貌和尺寸分布,探讨了稀土处理后钢中的夹杂物形成、变化规律。结果表明:试验条件下,最佳的稀土合金添加数量为0.6~0.9 kg/t。经过合适的稀土处理后,可以有效抑制尺寸相对较小的、不规则的AlN、MnS复合夹杂生成,促进钢中微细夹杂物的聚合、上浮,钢质纯净度得到明显提高。此时,钢中全氧含量最低,脱硫效果最佳,钢中的夹杂物主要是尺寸相对较大的、近似球形或者椭球形的稀土类夹杂。 Based on the industrial production of non-oriented silicon steel,the experiment on RE treatment during the RH refining process was studied.The morphology and the size distribution were observed for the steel specimens treated with different RE treatment conditions.Further more,the formation and change of inclusions of final steel sheets after RE treatment were discussed.The results show that the suitable RE added amount was 0.6~0.9 kg/t.After the suitable RE treatment,the formation of AlN and Mn... 
2011-03-28 215 5.8

针对川威950的工艺现状,结合无取向低硅钢SGG生产的工艺特点,主要从控制其钢坯加热和轧制以及终轧温度和卷曲温度几方面入手,进行无取向低硅钢生产的工艺控制研究。同时根据近6000吨的生产实践表明,该工艺措施能很好的满足该钢种的需要。 950 process Chuanwei status quo,with non-oriented silicon steel production process features low,mainly from the control of billet heating and rolling and finish rolling temperature and coiling temperature of several aspects,for non-oriented silicon steel production process of low control at the same time According to nearly 6,000 tons of production practice shows that the process measures could well meet the needs of the steel. 
2011-01-28 215 5.8

本实用新型属于硅钢技术领域,具体的说是一种硅钢前处理高液回流装置,包括机体;所述机体的侧端固接有一号导管;所述一号导管上安装有二号导管;所述机体的顶端固接有连接管;所述连接管上安装有入泡管;所述二号导管的内侧壁固接有电机;所述电机的输出端固接有扇叶;所述二号导管的顶端内侧壁固接有定位板;所述定位板的侧端转动连接有旋转叶轮;所述二号导管的底端固接有排泡管;通过一号导管和二号导管的配合可以把溢出的泡沫进行导向,通过扇叶和旋转叶轮的配合可以使泡沫快速流动,再通过排泡管排出进入机体的内部,可以使泡沫循环使用,避免泡沫的溢流造成环境的污染及碱液的浪费。
2021-12-08 215 6.8

叠片系数是冷轧无取向电工钢的重要质量指标。为了提高叠片系数,必须保证无取向电工钢板形良好以及横向厚差小。针对攀钢冷轧厂4机架HC轧机轧制无取向电工钢的边部减薄问题,以无取向电工钢横向厚差最小作为目标函数,建立了一套针对无取向电工钢边部减薄控制的辊型曲线优化数学模型,开发了无取向电工钢专用辊型曲线,使无取向电工钢横向厚差从25μm降低到10μm以下,取得了良好的控制效果。 The lamination factor is an important quality index of non-oriented silicon steel strip.Considering the lamination factor,the non-oriented silicon steel must have a good shape and a smaller transverse thickness difference.In order to solve the edge thinning of non-oriented silicon steel strip in Panzhihua Steel,a mathematic model for designing the roll shape is built.In the model,the transverse thickness difference of non-oriented silicon steel strip is taken as the objective function.Based on t... 
2011-01-28 215 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... 
2011-08-28 215 5.8

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