钢厂
CN202110381592.6一种免常化中间退火的无取向电工钢板及其制造方法
本发明公开了一种免常化中间退火的无取向电工钢板,其各化学元素质量百分含量为:0<C≤0.004%、Si:1.0~2.6%、Mn:0.2~1.0%、Al:0.2~1.6%、Ca:0.0003%~0.0035%,余量为Fe和其他不可避免的杂质。此外本发明还公开了上述无取向电工钢板的制造方法,其包括步骤:(1)冶炼和连铸,其中在该步骤不采用电磁搅拌;(2)热轧,其包括:粗轧、精轧、卷取和保温;其中控制粗轧之后、精轧之前的中间坯温度≥950℃;(3)上述热轧步骤后不进行常化中间退火或罩式炉中间退火而直接进行冷轧;(4)连续退火。本发明所述的无取向电工钢板通过采用合理的化学成分和工艺设计,可以在保证较低生产成本的同时,获得高磁感和低铁损的特性。
CN202080095882.8双取向电工钢板及其制造方法
根据本发明的一个实施例的双取向电工钢板,以重量%计,所述钢板包含Si:2.0至4.0%、Al:0.01至0.04%、S:0.0004至0.02%、Mn:0.05至0.3%、N:0.01%以下且0%除外、C:0.005%以下且0%除外、P:0.005至0.15%、Ti:0.001至0.005%、Ca:0.0001至0.005%和Mg:0.0001至0.005%,余量包含Fe和其他不可避免的杂质,具有从{100}<001>起15°以内的取向的晶粒的面积分数为60至99%,具有从{100}<025>起15°以内的取向的晶粒的面积分数为1至30%。
新钢1580取向硅钢宽度窄尺原因分析
取向硅钢因其高磁导率、低矫顽力和大电阻系数等特性,被广泛应用于大中型变压器和大型电动机铁芯的制造。因取向硅钢性能和成分控制严格,生产工艺复杂,故其产品代表了钢铁企业特殊钢生产的最高水平。本文介绍了新钢公司卷板厂1580热连轧线生产取向硅钢过程中出现的窄尺问题,研究了取向硅钢产品的特点,分析了热轧过程中的组织转变,并结合生产实际提出了改进措施。通过对加热炉钢坯加热模式、粗轧轧制策略、精轧轧制工艺、二级模型等方面的优化和改进,取向硅钢窄尺情况明显好转,提高了产品的成材率和市场口碑。 The oriented silicon steel is widely used in the iron core manufacture of large and mediumsized transformers and large motors because of its high permeability, low coercivity and large resistance coefficient. Due to the performance and composition control of oriented silicon steel is strict, the production process is complex,therefore, its products represent the highest level of special steel production in iron and steel enterprises. This paper introduces the problem of narrow gauge in the produ...
无取向硅钢成品钢卷头、尾磁性能差异探讨
结合工业化生产过程中出现的同卷带钢头、尾磁性能差异现象,对50SW1300牌号无取向硅钢同卷带钢头、尾试样的夹杂物、晶体织构和显微组织进行了分析研究。结果表明,夹杂物、晶体织构是影响成品钢卷磁性能的重要因素。夹杂物是造成同卷带钢头、尾铁损差异的主要原因。夹杂物数量越多,尤其是小尺寸的夹杂物数量越多,对成品带钢的磁性能影响越大,对于本试验而言,AlN和MnS是影响成品带钢磁性能的主要夹杂物。晶体织构是造成同卷带钢头、尾磁感应强度差异的主要原因。有益的{100}和Goss织构含量越大,有害的{111}<110>和{111}<112>织构含量越小,即有益织构与有害织构含量比越大,成品带钢的磁感应强度越大。 Based on the industrial manufacture of non-oriented silicon steel sheets 50SW1300, the magnetic property variation of head and tail of the same finished steel sheets was discussed by analyzing non-metallic inclusion, crystal texture, and microstructure. Results show that, both of the non-metallic inclusion and the crystal texture will affect the magnetic properties significantly. The non-metallic inclusion is the key factor of the core loss variation of head and tail of the same finished steel s...
CN202011508234.9一种带有紧固硅钢带的非晶合金铁心制造方法
本发明公开了一种带有紧固硅钢带的非晶合金铁心制造方法,包括以下步骤:步骤(1):切割非晶带材片和紧固硅钢带;步骤(2):对所述非晶带材片和紧固硅钢带进行套装与成型,每组非晶带材片两端搭接,紧固硅钢带设置于非晶带材片之间,得到成型铁心;步骤(3):对所述成型铁心进行磁场热处理;步骤(4):对所述成型铁心进行表面涂封。通过本发明提供的方法生产非晶合金铁心,操作方便、提升非晶合金铁心的结构稳定性,并且进一步降低铁心因磁致伸缩产生的噪声。
硅钢常化退火炉辊印缺陷预测分类预警方法研究
针对宝钢硅钢常化退火过程中产生的退火炉辊印缺陷问题,通过实际生产的大数据与产品质量问题相结合,将数据挖掘、数据分析方法应用到实际,一定程度上解决了现场实际生产中的痛点,为现场生产提供决策支撑,避免了以前通过人工识别判定存在疏漏和无法定量判断的问题,形成了一套具有鲁棒性和可操作性的钢铁生产过程数据分析方法。通过智慧决策系统平台获取实际生产和表检仪数据,基于Pearson相关系数算法进行变量挑选和特征工程,并应用随机森林算法对数据建立分类预测模型,实现了质量问题的溯源和监控,通过数据量化预测了炉辊印缺陷是否可通过轧制消除的质量问题,识别准确率达到96.43%。 In views of the normalizing annealing furnace roll marks problem occurred in the process of normalizing annealing of silicon steel in Baosteel,by combining big data from actual production with product quality problems,data mining and data analysis methods were applied to actual production to solve the pain points and provide decision support,a robust and practical data analysis method for the steel production process has been developed,which avoided the previous problems of omission and non-quan...
CN202023204810.9硅钢片焊接模具
本实用新型公开了一种硅钢片焊接模具,包括底座,底座上均匀排布有多条滑槽,每条滑槽内连接有一根垂直设置的定位杆,定位杆底部穿过底座连接一气缸,气缸连接在底座底部。本实用新型结构设计合理巧妙,移动不同位置的定位杆,将定位杆与硅钢片贴合,不同滑槽内的定位杆之间相互错位,并利用气缸将硅钢片定位,这种结构不可以适用于各种形状的硅钢片,使用方便快捷。
高效电机用无取向电工钢组织和析出物研究及产品开发
为开发高效电机用冷轧无取向电工钢,借助实验室薄板坯连铸连轧模拟设备及扫描电镜、透射电镜等检验手段研究了成分、组织、织构和析出物等对无取向电工钢磁性能的影响规律;结果表明:常化处理使组织均匀化并增加有利于磁性提高的织构组分;采用CSP流程开发的高效电机用无取向电工钢铁损平均值3.4 0 W/kg,磁感≥1.68 T。 In order to develop electrical steel for high efficiency motor,effect of components,microstructure,texture and precipitation on magnetic property of electrical steel are analyzed.From the result,normalizing treatment makes microstructure uniform and increases component of favorable texture.Iron loss of electrical steel developed by CSP line is 3.40W/kg and magnetic induction is more than 1.68T.
常化退火处理对无取向硅钢组织和织构的影响
采用光学显微镜和X射线衍射仪研究了常化退火处理对无取向硅钢热轧板和成品退火板显微组织和织构的影响。结果表明:常化退火处理消除了热轧板中的变形组织,促使变形晶粒完成再结晶;常化退火处理使高斯织构和立方织构易通过再结晶在变形带内形核和长大,可显著降低成品退火板的{111}和{112}不利织构组分的占有率,提高{100}和{110}有利织构组分的占有率,从而有利于提高无取向硅钢成品板的磁性能。 The effect of normalizing annealing treatment on microstructure and texture of non-oriented silicon steel hot rolled plates and final products were investigated by means of optical microscope and X-ray diffractometer analysis.The results show that the deformed microstructure of the hot rolled plates transformed into recrystallized grain after normalizing annealing treatment.The grains of Goss texture and cubic texture crystallographic orientation were formed and grown by recrystallization in the...
取向硅钢连续退火的工艺与设计
分析了影响脱碳效果和结晶行为的各种要素及其相互制约关系,提出了Hi-B连续退火工艺曲线,总结得出快速加热及合理稳态气氛是实现工艺制度的关键。结合实际工程,介绍了在连续退火炉设计中快速加热和气氛设计的考虑方法,并指出随着Hi-B产品的发展,如何改进这些方法将是连退工程研发的方向之一。 The factors which affect decarbonization and crystallization and the mutual restriction between them were analyzed.A complete continuous annealing process for Hi-B was put forward.As a result,the rapid heating and the proper steady atmosphere were two important factors.According to an actual project,the consider methods for designing rapid heating and proper steady atmosphere were introduced,and it is pointed that with the development of Hi-B technique,how to improve these techniques would be on...
CN202180014834.6方向性电磁钢板的制造方法
本发明提供能够制造实现高磁通密度且磁特性优异的方向性电磁钢板的新颖并且得以改良的方向性电磁钢板的制造方法。本发明的一方案提供一种方向性电磁钢板的制造方法,其特征在于,其包含热轧工序、冷轧工序、一次再结晶退火工序、最终退火工序及平坦化退火工序,并进行喷丸处理和/或矫平加工处理及与溶液相接触的处理,上述溶液含有规定量的Cu等,pH为‑1.5以上且低于7,液温为15℃以上且100℃以下,钢板在上述溶液中浸渍的时间为5秒以上且200秒以下。
大压下率冷轧无取向硅钢再结晶织构演变
研究了冷轧95%变形量无取向硅钢不同退火温度(710~1 050℃)下再结晶织构特征.再结晶刚完成时(710℃退火),呈现强γ({111<112>~<134>)与弱{114}<481>织构特征;随退火温度升高至900℃,γ明显减弱,{114}<481>组分持续增强,形成典型的{h,1,1}<1/h,1,2>织构;进一步升温至1 050℃,再结晶织构不再发生明显变化.基于EBSD分析,{114}<481>组分的持续强化可归因于其明显的尺寸优势以及较高频率的高能晶界(取向差角为20°~45°). A non-oriented silicon steel was heavily rolled to 95% reduction and subsequently annealed at 710~1 050 ℃ to investigate recrystallization texture evolution.When annealed at 710 ℃ with complete recrystallization,the texture is characterized by a strong partial γ fiber spreading from {111}<112> to {111}<134> and a weak {114}<481> component.As annealing at 900 ℃,γ fiber is decreased significantly while {114}<481> is increased consistently,producing a typical {h,1,1}<1/h,...

