钢厂
无取向硅钢夹杂物分析
采用非水溶液电解方法来提取无取向硅钢中夹杂物。通过扫描电镜(SEM)观察结果表明:无取向硅钢中主要夹杂物为六棱柱的AlN、不规则硅酸盐及球状的铁的硫化物和氧化物,其中AlN夹杂尺寸在1~5μm,数量较多,还有部分AlN的复合夹杂。进一步研究了AlN复合夹杂形成机理,采用了Thermo-Calc热力学计算软件计算出该钢样中AlN、MnS析出温度分别为1 240℃、1 200℃,而Al2O3析出温度大于1 800℃,从而为AlN复合夹杂形成机理提供了一个理论依据。 Extracting inclusions from non-oriented silicon steel in non-aqueous electrolysis is a nondestructive method to gain inclusions.Scanning electron microscopy shows that the main inclusions in non-oriented silicon steel were hexagonal AlN,which was of large quantity,irregular silicate,spherical iron sulfide and oxide.The size of AlN inclusions ranged from 1to 5μm,and there were some duplex inclusions of AlN.To further study the formation mechanism of AlN duplex inclusions,Thermo-Calc thermodynamic...
基于CSP工艺取向硅钢初次再结晶晶界特征对宏观织构的影响
利用背散射衍射技术(EBSD)和XRD,研究了两段式脱碳退火工艺对取向硅钢纵截面初次再结晶的微区取向、取向差分布、特殊晶界(CSL)及高温退火试样高斯织构。分析了初次再结晶晶界特征对取向硅钢高温退火后宏观织构的影响。结果表明:初次再结晶的纵截面基体中Σ3和Σ5晶界使得高斯晶粒有着较高的迁移率,在高温退火时借助20o~45°的大角度晶界的界面能吞并周围{111}<112>晶粒迅速长大,形成密度水平较高的高斯织构。 Micro area orientation of primary recrystallization,the misorientation distribution,special boundaries under different two-stage decarburization annealing and the Goss texture under high temperature annealing the longitudinal section of grain-oriented silicon steel were detected by electron back scattering diffraction(EBSD) and X-ray diffraction(XRD).The effect of primary recrystallization grain boundary on macrotexture after high temperature annealing was analyzed.The results show that the Σ3 a...
压下率对取向硅钢热轧板织构的影响
采用X-射线衍射分析技术测定了取向硅钢热轧板在不同压下率下不同厚度处的织构。结果表明,在压下率低于80%的情况下,几乎所有试样的不同厚度处的织构均为旋转立方织构类型{100}<011>,但不同压下率、不同厚度处的织构强度存在很大差异;在压下率大于80%的情况下,不同试样的不同厚度处的织构类型发生了变化,其织构类型为旋转立方织构或高斯织构{011}<100>,且当织构类型为旋转立方织构时,织构强度存在很大差异,而当织构类型为高斯织构时,织构强度差异相对较小。 The texture of the grain oriented silicon steel hot rolled plate at different compressibility has been measured.The experimental results have shown that the texture of all samples at different thickness is {100}<011> when the compressibility is below 80%,and its intensity at different compressibility and thickness is difference.The texture of all samples at different thickness is variable when the compressibility is above 80%,it is {100}<011> or {011}<100>,and the intensity of ...
脉冲磁场热处理对CGO取向硅钢脱碳退火过程中组织和织构的影响
采用自主研发的脉冲磁场退火装置,在取向硅钢脱碳退火过程中分别施加不同强度的磁场,并采用光学显微镜和X射线衍射仪研究了脉冲磁场脱碳退火后试样的显微组织和宏观织构。结果表明,脱碳退火过程中施加脉冲磁场后取向硅钢的平均晶粒尺寸均增加,当磁场强度为40 mT时,平均晶粒尺寸最大,为13.06μm。此外,取向硅钢试样的立方织构{001}<100>强度减弱,高斯织构{110}<001>和{111}<112>织构增强,有利于获得更好的成品织构和磁性能。 Self-developed pulsed magnetic field annealing device was used to apply magnetic field of different intensities during decarburization annealing of an oriented silicon steel, and microstructure and macro-texture of the specimens after decarburization annealing in a pulsed magnetic field were studied by using optical microscope and X-ray diffractometer. The results show that the average grain size of the oriented silicon steel increases with the application of pulsed magnetic field during decarbu...
薄板坯连铸连轧流程生产高磁感取向硅钢的研究现状与技术分析
概述了高磁感取向硅钢生产工艺的研究现状及发展趋势。介绍了国内外薄板坯连铸连轧流程生产高磁感取向硅钢的研究现状。从流程工序特点、热履历、组织与抑制剂控制方面进行对比,分析了薄板坯连铸连轧流程相对传统板坯流程生产高磁感取向硅钢的技术优势,在此基础上提出了利用该流程生产高磁感取向硅钢需要解决的主要技术难点。 The current status and development trend of production process for high magnetic induction grain-oriented silicon steel are summarized.The research status of producing high magnetic induction grain-oriented silicon steel by thin slab casting and rolling process at home and abroad is introduced.The potential technical advantages of producing high magnetic induction grain-oriented silicon steel by thin slab casting and rolling process are obtained by analyzing in terms of process characteristics,t...
CN202111565462.4一种提高高磁感取向硅钢渗氮效率的方法
本申请提供了一种提高高磁感取向硅钢渗氮效率的方法,属于高磁感取向硅钢渗氮处理技术领域,包括所述高磁感取向硅钢按重量百分比包括:Si:2.8~3.4%、C:0.040~0.070%、Als:0.015~0.045%、Mn:0.06~0.14%、S:0.003~0.020%、N:0.003~0.010%、Cu:0.01~0.025%、Sn:0.03%~0.07%、Cr及Ni,Cr和Ni的总含量小于0.5%,其余为Fe和不可避免杂质物,其特征在于,控制脱碳退火后钢带表层氧化物中铁系氧化物的比例,该装置能够增加脱碳退火后钢带表面氧化层中铁系氧化物占整个氧化层重量的比例,从而在获得同等渗氮量的情况下实现了快速渗氮,缩短渗氮时间,提高渗氮效率。
CN202110716077.9一种硅钢片宽度偏差检测装置及其检测方法
本发明公开了一种硅钢片宽度偏差检测装置及其检测方法,属于硅钢片检测领域。一种硅钢片宽度偏差检测装置,包括检测装置上的第一输送机体,还包括:多个均匀分布的隔板,均固定安装在第一输送机体的皮带表面;开槽,设置在所述第一输送机体的侧壁;装置盒,通过上下滑动机构与所述第一输送机体连接,其中,所述装置盒内通过顶紧机构滑动安装有滚轮;第一支架,固定安装在第一输送机体的侧壁;装置板,通过转轴转动连接在第一支架的侧壁,所述转轴位于装置板的侧壁中部,所述装置板两端设有自动推料机构;本发明中的硅钢片宽度偏差检测装置不仅可以更高精度的检测硅钢片的宽度,并且还能将不达标的硅钢片自动筛选出来,使用更加的方便。
CN202011524912.0一种使铋收得率不低于70%的含铋取向硅钢冶炼方法
一种使铋收得率不低于70%的含铋取向硅钢冶炼方法,其步骤:常规转炉冶炼并出钢至钢包中;RH精炼处理,其间:控制渣层厚度不低于45mm,且渣成分在:Al2O3:25~35wt%,CaO:40~50wt%,MgO:10~15wt%,且结束时钢水温度控制在1530~1590℃;真空精炼结束后进行镇静;后将铋颗粒与石灰石颗粒混装容器加入钢水中;保护浇注和后工序生产。本发明将铋颗粒与石灰石颗粒混合加入,石灰石在钢液中分解产生的气体不仅可以减缓铋颗粒下沉速度,使铋能够快速扩散均匀,更主要的是还可以强化铋颗粒在钢液中的扩散,最终可获得铋收得率高于70%即在71~75%的理想效果。
无取向硅钢钢液增钛原因分析
对无取向硅钢炼钢全流程钢液增钛的原因进行了分析,认为铁水钛含量、转炉出钢温度、转炉下渣量、精炼渣TiO2含量、钢水罐及RH浸入管混钢种生产是影响钢液增钛的主要原因。通过采取低钛铁水冶炼,减少转炉下渣量,提高出钢温度,添加白灰改质精炼渣等措施,均能够降低钢液中的钛含量。 After analyzing the causes leading to increased content of titanium in molten nonoriented silicon steel during whole steelmaking process, it was concluded that such factors as content of titanium in hot metal, tapping temperature from converter, quantity of roughing slag entered into the ladle from converter, content of TiO2 in refining slag, molten steel ladle car,carrying out the steelmaking of different steel grades by the same ladle and same RH immersion tube were the main causes ...
CN202110324168.8一种自主学习的高硅钢软磁复合铁芯智能化生产系统及生产方法
本发明公开了一种自主学习的高硅钢软磁复合铁芯智能化生产系统及生产方法,属于软磁复合铁芯智能化生产技术领域。本发明的生产系统包括数据输入模块、数据分析模块、数据输出模块、通信模块、数据修正模块;生产方法为:用户通过输入模块选择目标性能参数及生产控制模式,系统生成生产过程关键参数,并由输出模块输出给用户;用户确认后形成控制指令,并发送至生产设备进行生产。本发明的系统不仅能够根据高硅钢铁芯产品的目标性能参数自动生成合理的操作条件,还能根据历史数据和产品检化结果对系统内置的关系模型不断进行优化、完善,能够有效提高产品产量和质量、减少浪费、降低成本。

