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本发明公开了一种精确控制高磁感取向硅钢连铸坯Als成分的方法,本发明涉及的主要是高磁感取向硅钢生产过程的连铸工艺环节,负责将高温液态钢水浇注凝固成固态连铸坯。通过采取控制大包下渣、加入足量中间包覆盖剂、采用长水口+石墨垫圈+氩封保护浇注等方法,将精炼结束到连铸过程Als降低量稳定控制在0.0030~0.0045%范围内,稳定了二次氧化程度。通过采用本方法生产的连铸坯Als含量稳定在0.0245~0.0275%范围内,为提高取向硅钢产品的磁感和铁损性能奠定坚实的基础保障。
2021-11-18 165 6.8

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... 
2013-06-28 178 5.8

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。
2020-12-22 183 6.8

本发明实施例公开了一种硅钢稀酸废水零排放处理方法和系统,所述方法包括:获得稀酸废水;对所述稀酸废水中的含硅固体杂质进行分离与回收,以获得稀酸废水净化液和含硅脱水泥饼;将所述稀酸废水净化液进行两级电吸附分盐处理,利用直流电场将稀酸废水中氯化亚铁组份浓缩分离,以获得分盐浓水和分盐淡水;将所述分盐浓水与酸再生工艺耦合,以获得再生盐酸;将所述分盐淡水调质再生处理,以获得铁系絮凝剂和再生工业净化水。所述硅钢稀酸废水零排放处理方法和系统,可以较低成本和能耗实现硅钢稀酸性废水全回用,真正实现废水零排放;可回收稀酸废水中的铁素和稀盐酸,不产生固体废物,可彻底实现废弃物资源化利用。
2020-12-16 175 6.8

【摘要】 <正>国家硅钢技术研究中心自2008年落户武...
2011-06-28 127 5.8

一种无取向性电磁钢板用热轧钢板,具有以下特征:以质量%计含有:C:0.0010~0.0050%、Si:1.90%~3.50%、Al:0.10%~3.00%、Mn:0.05~2.00%、P:0.10%以下、S:0.005%以下、N:0.0040%以下、B:0.0060%以下;剩余部分由Fe和杂质构成;在无取向性电磁钢板用热轧钢板的板宽方向端部,结晶晶界的C浓度(原子%)是P浓度(原子%)的3.0倍以上;无取向性电磁钢板用热轧钢板的结晶晶界的C浓度(原子%)是晶粒内C浓度的3.5倍以上。
2021-02-19 142 6.8

采用X射线衍射仪分析无取向硅钢冷轧织构和再结晶退火织构的演化,研究了热轧组织对无取向硅钢织构以及磁性能的影响。结果表明,具有均匀、粗大晶粒组织的热轧板,冷轧形成更多的剪切带,导致成品板形成高的高斯织构组分,并提高了{100}织构强度,降低了γ纤维织构,最终导致成品磁感应强度升高,铁损下降。 The texture evolution of non-oriented silicon steel during cold-rolling and recrystallization annealing was investigated by X-ray diffractometer.The effects of hot band microstructure on the texture and magnetic properties of non-oriented silicon steel were analyzed.The results show that more shear bands appear during cold rolling due to homogeneous coarse grain in hot band.So strong{110}<001> texture after recrystallization annealing forms.At the same time,the {100} texture components inc... 
2023-05-09 215 5.8

通过对连退线SF炉内的电加热体的焊接技术进行总结分析,得出焊接时应采用的主要方法,采用本焊接方法可提高电加热体的焊接速度和焊接质量,保证了焊接质量和施工工期。 SF furnace for continuous annealing line heating body welding technology summary,the main method used in welding,welding method by using the electric heater to improve the welding speed and welding quality through the implementation of this method to ensure the welding quality and Construction period. 
2011-06-28 138 5.8

取向硅钢利用析出物作为抑制剂,抑制初次再结晶晶粒的长大,抑制剂是取向硅钢发生二次再结晶的基本条件之一。文中通过低温板坯加热技术制备取向硅钢,采用透射电镜(TEM)观察并研究了高温退火阶段抑制剂的演化过程。结果表明,渗氮后形成的非晶态Si3N4析出物不稳定,在700~750℃退火升温阶段转化为(Al,Si)N;(Al,Si)N颗粒在800℃发生团聚,随后长大并粗化;(Al,Si)N是低温取向硅钢主要抑制剂,随退火温度的升高,(Al,Si)N抑制力大幅下降。 Precipitates as inhibitor are used to inhibit the grain growth of primary recrystallization in grain-oriented silicon steel,and inhibitor is one of the basic conditions for occurring of secondary recrystallization.The grain-oriented silicon steel was produced by low temperature slab heating and nitriding technique.The evolution of inhibitor was observed by transmission electron microscopy.The results show that Si3N4 particles are precipitated after nitriding,and Si3N4 particles are amorphous and... 
2011-11-28 157 5.8

晶界和{100}柱状晶在硅钢生产过程中对织构的遗传和演变有关键作用,因此本文利用晶体塑性有限元方法进行立方和旋转立方取向双晶在晶界不同位向时晶体取向演变的全场模拟。模拟显示,三种晶界位向下,晶界都具有诱发晶内产生S形状形变不均匀和缓解局部形变不均匀区取向转动的特点,立方和旋转立方取向双晶在带有剪切作用的轧制条件下都显示明显的取向稳定性。GB⊥RD(表示晶界垂直于轧向)晶界位向时,旋转立方取向晶粒优先在晶界中心位置发生取向转动,而立方取向则优先在远离晶界的端部发生取向转动。GB⊥TD(表示晶界垂直于横向)的晶界位向下,其晶界阻碍作用最小,双晶内产生的取向漫散度大,织构强度较低;除绕TD转动外,也具有复杂的绕RD、ND的取向转动。GB⊥ND(表示晶界垂直于法向)的晶界位向下,取向转动与GB⊥RD时相近,但有少量取向绕ND转动。 Grain boundaries and initial{100}columnar grains play a key role in the inheritance and evolution of texture in the production of electrical steels.In this paper,the crystal plasticity finite element method was used to simulate the grain orientation evolution of cube and rotated-cube oriented bicrystals when grain boundary was set to different orientations.It was shown that the grain boundary in three grain boundary orientations demonstrated the characteristics of inducing Sshape deformation inh... 
2022-01-28 173 5.8

通过试验确定氩气分析流量为3.5L/min,静态流量为0.75L/min,冲洗时间为3s,预燃时间为12s,积分时间为5s的激发条件,采用火花源原子发射光谱法测定取向硅钢中碳、硅、锰、磷、硫。分别采用铣床铣样、砂轮磨样两种制样方式进行了精密度考察,发现制样方式对结果影响不大;讨论了取向硅钢样品中碳、硅、锰、磷、硫测定时可能存在的共存元素干扰,发现硅对锰元素的干扰不可忽略,采用干扰系数法进行了校正,据此拟合得到各元素校准曲线的相关系数均在0.999 0以上。精密度考察结果表明,碳、硅、锰、磷、硫的相对标准偏差(n=10)在0.71%~9.4%之间。对两块取向硅钢生产样品进行分析,并与钢铁研究总院进行比对分析,结果一致,且偏差均在允许范围内。 Carbon,silicon,manganese,phosphorus and sulfur in oriented silicon steel were determined by spark source atomic emission spectrometry.The selected excitation conditions were as follows:the analytical flow rate of argon was 3.5L/min,the static flow rate was 0.75L/min,the flush time was3s,the precombustion time was 12sand the integration time was 5s.Two sample preparation methods,including milling machine and grinding wheel,were investigated.The precision test results showed that,the determination... 
2013-10-28 174 5.8

本实用新型提供了一种硅钢叠铁芯线圈吊装夹具,属于变压器的技术领域,缓解了现有技术中存在的线圈吊装夹具单次只能进行单个垫块装配,效率较低的技术问题。所述夹具包括:中心盘、吊环、连接杆、吊臂、勾具;连接杆一端连接中心盘,所述连接杆的数量为3个,且两两之间的夹角为120°;所述吊环设置于中心盘上方;每个所述连接杆另一端连接一个吊臂;每个吊臂上设置有勾具。
2021-04-21 129 6.8

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