钢厂
无取向电工钢织构的演变及其沿带钢宽度方向上的差异
采用EBSD检测技术,分析了50W800无取向电工钢在重要生产工序间织构的演变以及织构沿带钢宽度方向上的差异性。结果表明:热轧板织构沿带钢宽度方向上的差异性主要体现在表层织构。带钢边部表层织构主要由旋转立方织构、α纤维织构以及少量的γ纤维织构组成,带钢宽度1/4处的表层织构主要存在高斯织构,带钢宽度1/2处的表层织构主要为(110)面织构以及少量的铜型织构。各处的带钢宽度1/4处和1/2处的织构类型基本一致,都以α纤维织构和旋转立方织构为主。冷轧后,各处的表层织构类型差异较小,均为γ纤维织构和α纤维织构。由板宽边部至中心处织构强度值逐渐降低。退火后,各处织构的组分基本一致,为较强的γ纤维织构和较弱的(100)面织构。各处织构强度值差异较小,变化趋势与冷轧板一致。 The texture of non-oriented electrical steel 50W800 was detected by EBSD technique.The evolution of the texture between important processes and the difference of texture along the width direction of strip were analyzed.The result shows that the difference along the width direction of strip of texture at the surface of hot rolled plate is most obvious.The texture at the surface of strip edge is primarily made of rotating cube texture,αfiber texture and weakγfiber texture.Goss texture is mainly co...
无取向电工钢边部减薄控制技术研究
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...
硼酸对无铬无取向硅钢涂层性能的影响
研究了硼酸对以Al(H2PO4)3为基料的无铬无取向硅钢绝缘涂层各项性能的影响。用盐雾实验、动电位极化及交流阻抗等试验手段研究了不同硼酸含量对硅钢绝缘涂层的耐蚀性和电化学行为的影响,同时采用SEM对涂层的表面形貌进行了研究。结果表明,硼酸含量为9.7%时,涂层的耐盐雾性及电化学性能最好;硼酸含量过少或过多时,涂层的耐蚀性和电化学性能都较差。 Influence of boric acid on the performance of chromium-free non-oriented silicon steel insulating coating based on aluminum dihydrogen phosphate was investigated.Salt spray experiment,potentiodynamic polarization and electrochemical impedance spectroscopy were used to study the influence of boric acid content on the corrosion resistance and electrochemical behavior of the insulation coating of silicon steel.Surface morphologies of the coatings were tested by SEM.Result shows that when the boric ...
CN202123193716.2硅钢专用消泡剂生产温度控制装置
本实用新型公开了硅钢专用消泡剂生产温度控制装置,包括底板及设置在底板上端的温控桶,所述温控桶的内部设置有温控腔,所述温控桶的上下两端分别安装有进料口及出料口,所述温控桶的内部设置有便于温度控制的温度控制机构,所述底板上设置有用于搅拌的搅拌机构;所述温度控制机构包括安装在温控桶上的进气管及出气管,所述进气管及出气管与温控腔的内部相通设置。本实用新型的硅钢专用消泡剂生产温度控制装置,整个温控处理操作简单、实施便捷,便于对消泡剂进行温度控制,且冷却介质或者加热介质可以直接对消泡剂进行加热或是降温,降低了输送过程中的能量消耗,提高了消泡剂温度控制的效率。
余热利用系统在硅钢连续退火机组中的应用
介绍了烟气余热利用系统的工艺流程及控制思想,结合该系统在钢厂硅钢连续退火机组中的应用实践,估算出烟气余热利用系统每年可节约蒸汽5 040 t,经济效益良好,同时分析了该系统存在的问题及对策。 Introduced a method about the process and control of the application of waste heat system, which had been used into a silicon steel continuous annealing line and profiting a good economic benefit by saving a large number of steam every year, which has been estimated about 5 040 tons, and analyzed the problems and solutions existed in this system.
CN202111414457.3一种高磁感取向硅钢实验室轧机一次冷轧方法
本发明公开了一种高磁感取向硅钢实验室轧机一次冷轧方法,包括:1)取样,实验室冷轧材料选取经过常化酸洗后的厚度为2.3mm的取向硅钢试样;2)制样,利用取向硅钢专用剪板机,裁剪试样尺寸为轧向600mm×横向150mm;将试样表层轻涂一层薄薄的轧制油;3)冷轧轧制规程制定,轧前厚度为2.3mm;其中:轧制总道次为6次时轧后厚度为0.35mm,轧制总道次为7次时轧后厚度为0.27mm,轧制总道次为8次时轧后厚度为0.23mm。本发明的目的是提供一种高磁感取向硅钢实验室轧机一次冷轧方法,为工业试制提供一定的技术参考,以及后续工艺研究提供了更加可靠的试样和条件。
硅钢在连续退火机组浪形缺陷的控制
为了消除硅钢在连续退火机组产生的浪形缺陷,对浪形缺陷产生的主要原因进行了分析。制定了相应控制措施,对炉内带钢张力、冷却段输出、碳套辊与带钢的同步性、无氧化炉燃烧状态等参数进行了调整;在生产组织上安排高低牌号宽窄规格穿插生产、定期更换碳套辊等,实施后效果明显。 The main cause leading to waviness defects of silicon steel is analyzed in order to eliminate the waviness defects of silicon steel in continuous annealing line.And thus corresponding measures for controlling these defects are made by means of adjusting these parameters such as the tension of silicon steel coils in continuous annealing furnace,the output in cooling section and the combusting condition of the non-oxidation furnace as well as keeping the synchronization between carbon sleeved roll...
稀土Ce对含Sn高磁感无取向电工钢磁性能及夹杂物的影响
研究稀土Ce的添加对含Sn高磁感无取向电工钢磁性能及夹杂物的影响。对比分析了两种成分钢的磁性能以及各过程工艺条件下夹杂物种类和分布情况。结果表明,在含Sn高磁感无取向电工钢中加入稀土元素Ce可以粗化夹杂物,提高成品晶粒的均匀性,有效降低铁损;同时Ce的添加不影响Sn元素提高磁感的效果,磁感保持不变。 Effect of Ce on magnetic properties and inclusion of Sn-bearing high permeability non-oriented electrical steel was investigated. A comparative analysis of the magnetic properties and the types and distributions of inclusion in the two sheets with different composition shows that the addition of Ce to the Sn-bearing high permeability non-oriented electrical steel can coarse the inclusion,improve the homogeneity of the finished grain and effectively decrease the core loss. Also,the addition of Ce...
CN202110586723.4一种应用电工钢的变压器
本发明涉及变压器的技术领域,特别是涉及一种应用电工钢的变压器,其通过设置扇叶与冷凝盘管,通过冷却液与风冷共同对电工钢铁芯进行降温,避免电工钢铁芯工作过热导致电工钢铁芯损坏,提高使用稳定性;包括变压器箱体、两组固定支撑腿、电工钢铁芯、固定卡块、风机支架、风机、扇叶转轴、扇叶、冷却箱体、循环泵、冷却管、冷凝盘管、冷风机支架和冷风机,所述变压器箱体内部设置有空腔,所述变压器箱体右端连通设置有散热口,两组所述固定支撑腿对称固定安装在变压器箱体内部,所述固定支撑腿内端设置有紧固卡槽,所述电工钢铁芯左右两端对称固定安装有两组固定卡块,所述固定卡块固定卡装在固定支撑腿紧固卡槽中。
CN202122364525.1一种基于单片机的硅钢片卷料收卷装置
本实用新型公开了一种基于单片机的硅钢片卷料收卷装置,涉及硅钢片生产技术领域。本实用新型包括底板,底板的上表面固定连接有固定板,固定板的右侧面开设有第一滑动槽,第一滑动槽连接有移动模块,移动模块固定连接有限位杆,底板滑动连接有移动板,移动板开设有第二滑动槽,第二滑动槽滑动连接有第二移动块,限位杆与第二移动块滑动连接,固定板的右侧面转动连接有转动杆,底板的上表面固定安装有转动电机,转动杆穿过移动板与转动电机通过传动模块连接。本实用新型通过转动电机带动转动杆旋转对硅钢片进行收卷工作,通过调整固定板和移动板的间距防止硅钢片收卷不齐平,通过调整限位杆的间距对收卷后的硅钢片进行限制,防止硅钢片松散导致收卷不规则。
无取向电工钢硫含量控制技术研究
针对采用含钒铁水生产无取向电工钢存在的铁水脱硫率低、转炉冶炼过程回硫量大、成品硫含量偏高的问题,通过对含钒钛铁水脱硫,减少转炉冶炼过程回硫以及RH脱硫技术等方面的研究,大幅度降低了电工钢成品硫含量。生产表明钢中w(S)=0.001 9%~0.006 9%,平均为0.004 2%;w(S)≤0.008%的比例达到了100%,且w(S)≤0.005%的比例也达到了91.43%。 In cognizance of the problems of low desulphurization rate for hot metal,large sulfur-recovery in converter as well as high sulfur content in products in producing non-orientation electrical steel with vanadium-content hot metal countermeasures have been carried out.Sulfur content in non-orientation electrical steel is decreased obviously by way of study on technologies of desulphurization for hot metal with vanadium & titanium,sulfur-recovery control in converter and desulphurization in RH ...