硅钢资料

承钢采用铁水预处理(脱硫)→转炉提钒→转炉冶炼→RH精炼→连铸→轧制工艺,成功研发了无取向电工钢CGW800。试制的CGW800钢碳含量≤0.006 0%、氮含量<0.004 0%,热轧后的金相组织为铁素体和少量渗碳体,晶粒度5.5级,获得了较粗大、均匀的晶粒,钢板的成分和力学性能达到了标准要求。 In Cheng Steel,the CGW800 non- oriented electrical steel is successfully developed with process of hot metal pre- treating,vanadium extracting with converter,smelting with converter,RH refining,continuous casting and rolling. In the steel,the carbon content is not higher than 0. 006 0%,nitrogen less than0. 004 0%,the metallographic structure after hot rolling is ferrite and a little amount of cementite,grain size is 5. 5 degree,relative large and even grain got. The composition and mechanical pr... 

两炉次无取向硅钢XG800WR（/%:0.003～0.004C、0.71～0.75Si、0.32～0.33Mn、0.004～0.007S、0.016P）的炼钢流程为铁水预处理（KR）-210 t顶底复吹转炉-钢包吹氩-RH脱碳精炼-230mm×1220 mm板坯连铸。53 t中间包钢水过热度为25～30℃,钢包到中间包采用长水口全程吹氩保护浇铸,中间包至结晶器采用浸入式水口浇铸。结果表明,在RH、中间包、结晶器过程中钢中总氧以及夹杂物数量和尺寸均明显降低;但在钢包到中间包过程T[O]、[N]和钢中夹杂物数量增加,说明长水口浇铸过程存在二次氧化。连铸坯中T[O]、[N]平均他分别为11×10^-6和30×10^-6,显微夹杂物数量平均为4个/mm²。铸坯中的显微夹杂物主要为3～5μm的AlN,同时存在少量的MnS、Al₂O₃·AlN和Al₂O₃·MgO·MnS。 The steelmaking flow sheet for two heats non-oriented silicon steel XG800WR（/%:0.003～0.004C. 0.71～0.75Si,0.32～0.33Mn,0.004～0.007S,0.016P） is hot metal pretreatment（KR）-210 t top and bottom combined blown converter-ladle argon blowing-RH decarburization refining-230 mm×1 220 mm slab casting.The superheating extent of liquid in 53 t tundish is 25～30℃,whole casting is shielded by blowing argon with long nozzle from ladle to tundish and the submerged nozzle is adopted in casting from tundish to mold... 

采用CVD法制备6.5%Si高硅钢,介绍了具体的制备工艺过程,研究了温度对渗硅速率和试样质量减轻的影响,同时分析了扩散时间对高硅钢中硅分布的影响。结果表明:在CVD反应过程中,反应温度高于1050℃将大大提高渗硅速率,但当温度大于1200℃后,渗硅速率趋于稳定;渗硅后,试样会减轻、减薄,随着温度升高,试样质量减轻的速率逐渐增大,在1200℃左右趋于稳定;扩散时间越长,硅分布越均匀,结合制备效率进行考虑,满足Δw表-中/b≤5的时间为适宜的扩散时间。 6.5%Si high silicon steel was manufactured by using CVD method and the process was introduced,the influence of temperature on the siliconizing rate and quality reducing rate,diffusion time on silicon distribution were investigated.Results as follows: the siliconizing rate will increase quickly when the temperature is higher than 1050 ℃,but the siliconizing rate will become steadily as the temperature up to 1200 ℃;The quality reducing rate will increase with the elevating of temperature and the r... 

借助实验室设备研究了B元素对高牌号无取向硅钢热轧板组织和磁性能的影响。结果表明,与无硼钢相比,含硼钢的热轧板晶粒尺寸略小,析出物的类型和尺寸没有区别,主要是AlN和(AlN+MnS)复合析出物,少量的MnS析出物,尺寸集中在1.0～2.5μm范围内。未发现BN析出物。在力学性能方面,B对钢的软化作用不明显。在磁性能方面,含硼钢的铁损为3.215W/kg,磁感为1.710T,综合磁性能比无硼钢差。 Influences of boron on microstructure and properties of hot rolled band in high-grade non-oriented silicon steel are researched in this paper by experimental equipments.Compared with boron-free steel,the result shows that boron-bearing steel has smaller grain size,but the type and size of precipitations have no differences.The main precipitates are AlN,(MnS + AlN) composite precipitate and few MnS,the range of which are between 1.0 μm and 2.5 μm.BN precipitation is not found.With reward to mecha... 

针对节能电机对无取向电工钢在磁性能方面的特殊要求,采用普通W600牌号的热轧板为原料,通过大量的现场工艺试验,研究总结出了\"超低张力\"的运行工艺、\"先快后慢\"的加热工艺、\"先湿后干\"的退火脱碳工艺、\"先缓后急\"的冷却工艺,生产出P1.5/50≤4.0 W/kg、B50≥1.70 T的冷轧电工钢产品,满足了节能电机的要求。 Based on the special requirements of no-oriented electrical steel for saving energy motor in magnetic aspects,using common W600 brand of hot rolled plate as raw material,through a large number of real tests,an ultra-low tension process,heating process which was quick at first and then slow,annealing decarburization process which was dry after the first wet,and a cooling technology of \"slow after the first urgent\" were concluded.Electrical steel product with P1.5/50≤4.0W/kg,B50≥1.70T was produced... 

稀土元素在许多钢中发挥着独特而且不可替代的重要作用。半个世纪以来,它的作用已经在各种低合金和特殊合金钢中的研究及应用中得到充分的证明;然而,作为具有稀土资源优势的中国,在属于重要功能材料的无取向电工钢中稀土的应用却落后于国外,本文就中国稀土在无取向电工钢中的应用研究作简要的评述,希望能够进一步推进此领域的研究,并且促进中国稀土在无取向电工钢中应用技术的发展,缩短与国外差距,并提出了在此应用领域今后需深入开展的研究方向。 Rare earth elements play a unique and irreplaceable role in a lot of steels,it has given the full proof by the practice of various low alloy steels and special alloy steels since half century.However,as our country has the advantage of rare earth resources,RE application technology in non-oriented electrical steels has lagged behind abroad.The application researches of rare earth in non-oriented electrical steel in our country are briefly reviewed in this paper,which hope to promote the research... 

结合工业化生产的无取向硅钢,进行了RH精炼喂CaSi线去除钢中的非金属夹杂物试验研究。针对不同的钙处理条件,分析了CaS夹杂生成热力学,观察了夹杂物的形貌和尺寸分布,确定了夹杂物的类型、数量,探讨了钙处理后钢中夹杂物的变化规律。结果表明,本试验条件下,钙处理可以有效抑制MnS、AlN夹杂物的生成,有效促进钢中微细夹杂物的聚合、上浮、去除,钢质纯净度明显提高。经过合适的钙处理后,钢中的夹杂物以独立存在的CaO为主,同时有少量含CaO、SiO2、MgO的复合夹杂,没有发现CaS夹杂存在。这部分夹杂物的尺寸集中分布在2～20μm,数量约为1.8×105个/mm3。 Experimental study on removal of non-metallic inclusions in non-oriented silicon steel obtained from industrial production by CaSi wire feeding during RH refining process was carried out.The thermodynamics of CaS inclusion formation was analyzed,the morphology and the size distribution of inclusions were observed,and the numbers and types of inclusions were also determined for the steel specimens treated under different calcium treatment conditions.Furthermore,the variation of inclusion characte... 

目的提高硅钢的磁性能。方法采用多弧离子镀技术,在普通取向硅钢薄板两面沉积高硅FeSi合金层制得高硅梯度硅钢,并进行热处理,观察其显微组织,测量磁性能。结果退火态高硅梯度硅钢表面的高硅FeSi合金层与基底结合紧密,均匀致密。高硅梯度硅钢中硅含量呈梯度分布,最表层硅质量分数为11.0%,随着深度增加,硅含量逐渐降低,在距表面20μm处硅质量分数仍能达到6.5%。沉积态高硅梯度硅钢的电阻率ρ、低频铁损P10/50、高频铁损P10/1k及磁感应强度B8分别为68.6μΩ·cm,0.82W/kg,83.3 W/kg和1.73 T,退火后分别为63.1μΩ·cm,0.44 W/kg,54.38 W/kg和1.89 T。结论由于表层高硅FeSi合金层的存在,梯度高硅钢的低频磁学性能良好,但高频损耗需进一步改善。 Objective To improve the magnetic properties of silicon steel. Methods FeSi alloy coatings with high-silicon content were deposited on the surface of common grain-oriented silicon steel by cathodic arc plasma evaporation,and then a kind of high silicon gradient steel was prepared. The morphologies,content and magnetic properties of the samples were tested. Results FeSi alloy coatings were featured with compact microstructures and excellent adhesive quality with the substrates. The silicon conten... 

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... 

为了确保硅钢铬酸盐涂料的环保性,需要严格控制涂料的固化工艺,保证涂料固化过程中涂料中的六价铬充分转化为三价铬。对涂料及原料进行热重分析(TG)及差示扫描量热法分析(DSC)。结果表明,MgO与铬酐混合转化为MgCrO4,使六价铬稳定性增强,其中大部分Cr6+转变为Cr3+发生在620~700℃,在450~500℃高于铬酐发生大量失重,因此必须加入还原剂保证涂料中六价铬被充分还原;超过360℃后树脂会发生分解,因此实际板温不能超过360℃;加入了还原剂的整体涂料的失重温度区间主要在260~320℃,因此涂料固化时钢板的实际温度最佳区间为320~360℃。 Because of the silicon steel chromate coating’s environmental requirements,the paint curing process must be controlled strictly to ensure all Cr( Ⅵ) transforms to Cr( Ⅲ). The TG and DSC analyses of the paint are studied. The reaction of MgO and CrO3 would generate MgCrO4,enhancing the stability of Cr( Ⅵ). The most r( Ⅵ) in MgCrO4 changes to Cr( Ⅲ) at 620-700 ℃,while the CrO3 has a large weight loss at 450-500 ℃. The reductant must be added in the paint to make sure the Cr( Ⅵ) could transform suf... 

借助电子背散射(EBSD)技术对AlN为主抑制剂的Hi-B取向硅钢常化工艺的中间冷却制度进行了研究。结果表明:常化后试样均发生了完全再结晶,在60℃/s冷速下组织最均匀;在合适的冷却制度下常化板表层保留了强的Goss织构,它深入到1/4厚度处,并且形成对Goss织构有利的强{554}<225>织构。 The intermediate cooling system of Hi-B oriented silicon steel with AlN main inhibitor in normalizing process was studied by means of electron back diffraction(EBSD) technique. The results show that:the specimens after normalizing are fully recrystallization, and the microstructure is most uniform under the intermediate cooling rate of 60℃/s; under suitable cooling system, normalized plate surface retains strong Goss texture, it penetrates into the 1/4 thickness of the plate and forming strong {... 

研究了采用高温卷取热轧态原料和常化态原料生产高牌号冷轧无取向电工钢组织、织构和磁性能。研究发现钢卷采用750℃高温卷取,下线后立即采用\"保温罩\"对钢卷进行保温,时间96h,然后空冷至100℃时上线生产的工艺可取代常化工艺生产高牌号冷轧无取向电工钢。冷轧上线前,热轧态原料的表层为大量的再结晶组织,这部分组织包括了热轧轧制时保留下来的动态再结晶组织,钢卷本身高温回复后产生再结晶晶粒,以及在保温罩内保温时形成的再结晶组织。高温卷取的热轧态和常化态的热轧卷作为原料时,试样织构类型相似,取向分布密度接近,再结晶后织构类型仍然相似,取向分布密度仍然接近。Goss织构对磁性能增加有促进作用。实验钢中较好的磁性能对应的织构[{100}+Goss]/{111}的比值较高,体现了织构的遗传性。 Microstructure,texture and magnetic properties of high grade cold rolled nonoriented electrical steel which made of hot rolled material with high temperature coiling and with normalization were studied.Steels coiled in high temperature(at 750 ℃),stacked with insulation cover for 96hand air cooled to 100 ℃ were using to manufacture high grade nonoriented electrical steel.The process can replace the normalization process.There are a lot of recrystallized grains in the surface layer of the coil wit...