钢厂
冷轧取向硅钢工程混凝土结构裂缝控制施工技术
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...
卷取工艺对新型冷轧无取向电工钢热轧带组织的影响
利用OM、SEM、TEM等实验方法研究了卷取工艺对一种新型含铜无取向电工钢晶粒度和析出相的影响。结果表明,该电工钢热轧带卷取后的晶粒尺寸为18~24μm,在卷取过程中,热轧带中有一定数量的第二相析出,经EDS能谱及选区电子衍射分析,这些析出相主要为AlN。随着卷取工艺的变化,该电工钢的晶粒度大小变化不明显,析出相的类型、尺寸大小不发生改变,体积分数发生一定的改变。 The effects of coiling process on grain size and precipitates of a new copper-bearing non-oriented electrical steel were investigated by OM,TEM and other experimental method.The results show that the grain size of hot-rolled bands after coiling is 18~24 μm.The second phases precipitate during coiling process.They are mainly AlN by EDS spectra and selected area electron diffraction.With the change of coiling process,the grain size of the electrical steel does not change significantly;the type and...
CN202111127067.8一种用于硅钢片横剪线的卷料自动上料装置
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。
硅钢连续退火炉无氧化加热段辐射换热研究
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...
电工钢热连轧宽度自适应模型优化及应用
某厂对电工钢的轧制策略进行了优化,粗轧道次由“1+5”改为“1+3”。在优化后的生产过程中,每次变换钢种,烫辊材就会出现窄尺现象,而紧随其后的电工钢板则出现超宽现象。文中针对该问题,介绍了宽度设定模型和宽度自适应模型的原理,阐述了该问题出现的原因及解决方案,并通过对宽度自适应模型的应用研究及优化攻关,有效地解决了问题,大幅提升了实物质量,降低了宽度封锁率。 The rolling strategy of electrical steel was optimized in a factory,and the rough rolling pass was changed from “1+5”to“1+3”.Subsequently,the following problems were occurred in the production process:when the steel grade changed,the roasting roller steel before the electrical steel appeared the narrow width phenomenon,and then the electrical steel appeared the ultra-wide phenomenon.This paper introduced the principle of width setting model and width adaptive model,and expounded the causes and s...
硅钢铸坯感应加热炉参数优化设计
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...
CN202022991858.2一种去角硅钢片铁芯加工用的吊装装置
本实用新型提供了一种去角硅钢片铁芯加工用的吊装装置,包括安装板,所述安装板下设有防护筒,所述防护筒包括左半筒和右半筒,所述安装板上设有移动组件,所述移动组件包括气缸,所述气缸连接有伸缩杆,所述伸缩杆另一端连接有安放框架;所述左半筒和右半筒底壁皆设为开口状且侧壁上设有连通槽,所述左半筒和右半筒上分别设有防护组件,所述防护组件包括异型板和连接盒,所述异型板底部连接有固定板,所述固定板和连接盒之间连接有挤压弹簧,所述挤压弹簧内部设有传动杆,所述左半筒和右半筒内部两侧分别设有防护板。本实用新型可以有效挂住硅钢片,不会挤压坏封胶,且具有防护措施。
电工钢中柱状晶尺寸及退火工艺对{100}织构的影响
利用EBSD技术研究了电工钢中不同的柱状晶尺寸及退火工艺下{100}织构的演变规律。结果表明,初始晶粒尺寸的影响最显著。细小柱状晶热轧后经过常化处理,组织已均匀,但中心层有强{100}织构。粗大柱状晶中{100}织构的遗传性强,常化及中间退火后,中心层仍有粗大的以{100}取向为主的晶粒;脱碳退火后才能完成组织均匀化和织构梯度的弱化。常化时的升温速度也对织构演变存在影响,低的升温速度有利于{100}织构的保留,但升温速度的影响没有初始晶粒尺寸及退火次数的影响显著。细小柱状晶样品经过热轧及三次退火工艺适合制备取向电工钢。 Evolution of {100} texture of different columnar grains and annealing process was investigated in electrical steels with the help of EBSD technique.The results show that the effect of initial grain size is the strongest.The initial fine-grained specimen shows uniform microstructure after the normalizing process,while {100} grains appear preferentially in the central layer of sheets.The heredity of {100} texture in the initial coarse-grained specimen is more significant.{100} mainly-oriented coar...
CN202122736197.3水性硅钢绝缘涂料制备用袋式过滤机
本实用新型公开了水性硅钢绝缘涂料制备用袋式过滤机,包括下壳体,所述下壳体顶部铰接有一对上壳体,一对所述上壳体均具有连接板,一对所述连接板通过若干个吊环连接,所述上壳体外侧壁面设有上固定座,所述下壳体后壁面设有出液管,所述下壳体内部设有弹出支撑板机构,所述上壳体内部设有上壳体清洁机构,所述下壳体内部设有下壳体清洁机构。本实用新型涉及袋式过滤器技术领域,本装置结构紧凑,通过一对第一气缸铰接于一对上壳体两侧,使上壳体实现向自动两侧打开的功能,取出支撑板时较为方便,上壳体内壁面的挤压销能够对支撑板进行挤压,当上壳体被打开时,支撑板失去挤压销的限位作用时就会从限位槽中弹出,给人们带来了方便。
CN202110908763.6一种表面状态良好的无取向电工钢板及其制造方法
本发明公开一种表面状态良好的无取向电工钢板,其含有Fe和不可避免的杂质,其还含有质量百分含量如下的下述各化学元素:0<C≤0.005%,Si:1.0~2.0%,Mn:0.2~1.0%,Al:0.2~1.0%,Ca:0.0003~0.010%,Sb:0.005~0.2%,其中Si+Al:1.4~2.6%。此外,本发明还公开了一种上述的无取向电工钢板的制造方法,其包括步骤:(1)冶炼;(2)铸造:控制连铸坯在连铸机出口位置处的表面温度≥780℃,以使得连铸坯在其厚度方向上与宽度方向上的晶粒尺寸之比为2.5~6.0;(3)热轧:在热轧粗轧结束之后,控制中间坯头尾温度之差≤25℃;(4)冷轧;(5)连续退火。该表面状态良好的无取向电工钢板无瓦楞缺陷,其具有较低的铁损以及优良的磁感,其具有十分良好的推广前景和应用价值。
电工钢柱状晶热、冷轧时晶界作用分析
利用XRD和EBSD研究了长轴分别平行于轧向(RD)、横向(TD)和轧面法向(ND)的柱状晶样品在热轧、冷轧及退火过程中的组织、织构演变规律,并分别从几何诱导和取向诱导两个方面分析了晶界的交互作用.结果表明,热轧时由表面摩擦剪切作用引起的组织和织构梯度直接影响并遗传给后续冷轧及退火样品.热轧后,不同样品的初始晶粒形状各向异性差异消失,形成相同的各向异性晶界组织,但晶体学各向异性发生改变,导致随后冷轧、退火组织及织构的变化均不同于直接冷轧的柱状晶样品.研究中特别关注了对磁性能有利的{100}取向区域与晶界的关系. Columnar grains show their special characteristics of morphological and crystallographic anisotropies, and thus markedly influence the microstructure and texture evolution during rolling and annealing process in electrical steel. The rolling and annealing microstructure and texture of three columnar grained samples with the long axes arranged along different directions were investigated by means of XRD and EBSD techniques, and the effects of columnar grain boundaries were analyzed from the view ...
CN202111317124.9一种宽频率低铁损无取向电工钢及其制备方法
本发明公开了一种宽频率低铁损无取向电工钢及其制备方法,属于无取向电工钢生产制造技术领域。它从电工钢表面向内依次包括0.005mm~0.1mm的渗透层和钢材内芯;所述渗透层是由硅原子向电工钢内渗透形成,渗透层中的硅元素含量为3wt%~8wt%;所述钢材内芯包括2.0wt%~5.5wt%的硅元素和不少于93.2wt%的铁元素。本发明能保证无取向电工钢具有低频低铁损性能同时有效降低高频条件下的铁损,具体铁损性能为:铁损P1.5/50≤2.35W/kg,铁损P1.0/400≤13.8W/kg。

