硅钢资料

本发明公开了一种低磁致伸缩取向硅钢的制造方法，其包括步骤：(1)在硅钢基板上进行单面激光刻痕，其中进行激光刻痕的表面为第一表面，第一表面的背向一侧表面为第二表面；(2)基于激光刻痕的功率确定第一表面和第二表面的挠度差；(3)基于挠度差获得第一表面和第二表面所涂覆的绝缘涂层的涂覆量差；(4)基于涂覆量差，在第一表面和第二表面上涂覆绝缘涂层，其中第二表面的绝缘涂层涂覆量大于第一表面的绝缘涂层涂覆量。相应地，本发明还公开了采用上述制造方法所制得的低磁致伸缩取向硅钢，其第一表面和第二表面的磁致伸缩偏差≤2db(A)，并且所述低磁致伸缩取向硅钢的平均磁致伸缩≤55db(A)。

本发明提供一种在同一卷材内得到稳定的磁特性的方向性电磁钢板的制造方法。上述方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；上述冷轧包括至少1次的压下率为80％以上且轧制速度为设定值R0(mpm)期间的钢板温度T0(℃)与轧制速度为0.5×R0(mpm)以下期间的钢板温度T1(℃)满足式(1)的冷轧。

冷轧取向硅钢工程中有很多的超长、大体积以及薄壁的混凝土结构,裂缝控制是土建施工的关键。在工程中,按照\"抗放兼施、先放后抗、以抗为主\"的原则,采用\"无缝分块跳仓法\",防止超长混凝土结构收缩产生裂缝;在隧道和池体的底板与墙板施工中,采用\"整体浇筑\"法,避免了墙板因约束应力而产生的裂缝。 In the Cold-rolled grain-oriented silicon steel project,there are many overlength,bulk mass,thin-walled concretes structures,how to control the crack is the key of civil engineering construction.In these projects,according to the principle of\"release with resist,resist before release,resist is dominant \",the crack of the over-long structure and shrinkage can be prevented by the method of\"seamless block skip bin \".In the construction of the bottom plate and wall of the tunnel and the pool,the cra... 

硅钢连续退火线是无取向硅钢生产的成品线。由于受机组布置的影响,带钢经转向辊进出口活套后,当套量达到60%后就出现偏离生产线的情况,从而影响最终产品的质量及成材率,甚至损坏设备。针对某冷轧厂硅钢连续退火机组出口活套入口处带钢跑偏开展纠偏研究,利用Matlab对该纠偏系统进行动态仿真研究,分析系统的稳定性。 Silicon steel continuous annealing line is non oriented silicon steel production of finished product line.Due to the influence of unit layout,strip by roll Import & Export loop,when the set volume reached 60% after the emergence of deviation from the production line,thus affecting the quality of the final product and the rate of finished products,and even damage the equipment.For the export of continuous annealing line in cold rolling silicon steel strip deviation rectification loop at the e... 

【作者】 朱凤泉； 黄生银； ...

本发明涉及收卷装置技术领域，且公开了一种用于硅钢片横剪线的卷料自动上料装置，包括底座，所述底座顶端固定连接有底托，所述底托的顶端活动连接有外筒，所述外筒的中间通过轴承活动连接有阻力轴，所述阻力轴的正面固定连接有内筒，所述内筒外侧与外筒内侧的中间活动连接有连轴，所述连轴的中间固定连接有送料电机，所述送料电机的一侧固定连接有卷轴卡辊。本发明将原本固定式卡辊及送料电机，设置为可绕外筒内壁进行移动的活动式卡辊，在进行上料时通过外筒将卷轴卡辊旋动至底端进行直接上料，无需停机替换，提高了卷料替换的连续性，同时避免了使用吊车进行吊装过程中吊装不稳定造成的上料精度不高和卷轴掉落损坏等问题。

本文中简要介绍了武汉钢铁有限公司采用薄板坯连铸连轧CSP(compact strip production, CSP)工艺生产中低牌号无取向硅钢的实践情况.CSP工艺生产的硅钢具有成品磁性均匀、板形好的优势，但是在利用该技术生产中低牌号无取向硅钢时，常存在成品板表面瓦楞状缺陷严重、连铸生产效率低等问题.通过优化炼钢成分、热轧等相关工艺，可消除热轧板厚度方向中心的粗大形变组织，从源头上避免了粗大{100}<011>纤维组织的出现，消除了瓦楞状缺陷；通过提升冶炼效率和控制钢中夹杂物总量，可优化隧道炉的加热温度与在炉时间，大幅度提升了连铸生产效率，实现了中低牌号无取向硅钢的批量稳定制造，使CSP产线成为中低牌号无取向硅钢热轧板原料的主要供给生产线.如何进一步提升钢水纯洁度、提高连铸生产效率、降低生产成本，以及挖掘该产线生产薄带钢的技术优点，是未来工作的重点. This paper briefly introduces the practice of producing medium and low grade non oriented silicon steel(NGO) with CSP(compact strip production, CSP)technology in Wuhan Iron and Steel Co., Ltd.. This technology has the inherent advantages of uniform magnetic properties and good shape for silicon steel finished strip. However, in the actual production process, there are serious corrugated defects on the surface of silicon steel finished strip, and production efficiency of continuous casting is low... 

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... 

采用经验设计法初步确定了取向硅钢铸坯感应加热线圈设计参数,应用Ansoft仿真软件分别对36组不同线圈高度、线圈内径的感应加热炉在不同频率下的三维整体磁场和铸坯的温度场进行了数值仿真。通过对比仿真结果,确定电磁场分布最佳的一组感应加热炉设计参数为线圈高度h=1.50 m、线圈内径D1=0.575 m、电流频率f=110 Hz。在该参数下应用Ansoft仿真软件对取向硅钢铸坯感应加热炉的温度场进行了仿真,结果发现温度场分布均匀,可满足取向硅钢铸坯加热要求。 The induction heating coil design parameters for the oriented silicon steel casting blank were determined preliminary by experience design method,and 36 groups three-dimensional electromagnetic field with different height and inside diameter of coil under different frequencies of the induction heating furnace and the temperature field of the casting blank were investigated by numerical simulation using Ansoft simulation software. By comparing the simulation results of electromagnetic field distr... 

本发明公开了一种消除取向硅钢热轧边裂的制造方法，通过成分设计、热轧加热和轧制参数优化等方面控制方面，有效解决取向硅钢热轧板边裂缺陷，提高材料的成材率，可以有效消除取向硅钢热轧板的边裂并能保证良好的成品磁性能。

无取向硅钢特别是中牌号以上的无取向硅钢,随着含硅量的提高,常温下塑性较差,冷轧过程中轧制力明显提高,如果存在原料质量问题,极易发生断带事故,影响硅钢冷轧过程的成材率和生产效率。通过优化冷轧工艺参数,可提高冷轧稳定性。生产中通过合理分配冷轧各道次压下量和轧制速度,保证了轧制过程的稳定,很大程度减少了冷轧断带事故的发生。 Non-oriented silicon steel, especially in the low and middle grade, with the increase of silicon content, plasticity is poor at room temperature, rolling force in cold rolling process significantly improved .If there is the quality defect of raw materials , easily sheet is rolling off. Affect finished product rate and production efficiency in process of cold-rolled silicon steel. Through optimization of cold rolled process parameter , improve the stability of cold-rolling process. Through reason... 

研究了罩式炉常化工艺对50W350硅钢热轧板组织、夹杂物和性能的影响。研究结果显示，罩式炉常化工艺在温度一定的情况下，随着保温时间延长，硅钢晶粒逐步再结晶并长大，同时析出物也在聚集长大。通过制定合理的罩式炉常化工艺，可以实现硅钢晶粒的再结晶和长大，从而达到连续退火炉常化工艺产品技术要求。 The influence of normalization process with a bell furnace on the structure,inclusions and properties of 50W350electrical steel hot-rolled sheet was studied.The research results showed that:when the steel was normalized at a certain temperature in the bell furnace,the silicon steel grains gradually recrystallized and grew up with the extension of the annealing holding time,and at the same time,the precipitates also gathered and grew up.The recrystallization and growth of the silicon steel grains...