硅钢资料

介绍了国内无底层取向电工钢生产技术水平、产量和用途，简述了无底层取向电工钢作为取向电工钢超/极薄带母料及应用于制作大型发电机组铁心、风电等电机铁心和变压器铁心等的情况。 The production technology level,output and application of domestic glassless grainoriented electrical steel were introduced,and the application of glassless grain-oriented electrical steel as parent material of ultra-thin strip of grain-oriented electrical steel and in making large-scale electric generator cores,wind power motor cores and transformer cores were briefly described. 

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。

本发明公开了一种提高薄板坯连铸生产高铝无取向硅钢可浇性的方法，在保证生产顺行、质量稳定的基础上，能使高铝无取向硅钢连浇炉数由10炉提高至16炉，在提高小时产量、降低生产成本方面效果显著。

本发明公开了一种高牌号硅钢的穿带激光焊接方法，包括：将焊缝中硅含量降低到Si焊＜1.9%。采用激光+填丝焊接，填丝ER50‑6碳钢焊丝；根据焊缝截面积和激光焊接速度；激光填丝焊接时，激光线能量应足够大，达到填丝在熔池中充分混合，均匀分布，不至于填丝的成分浮在熔池的上半部分。采用此方法使焊缝组织从粗大铁素体变成细小、致密的无碳贝氏体，晶内沉淀相和晶间脆性相相对大幅减少，提高了焊缝韧性和成形性能，保证了高硅硅钢带的穿带焊接和连续生产。

电工钢反复弯曲次数是电工钢性能检验的重要指标之一,直接影响到用户在使用电工钢过程的机加工性能。主要分析了试样宽度、试样张力、晶粒取向、反复弯曲设备等因素对电工钢反复弯曲试验的影响,并对各个因素的影响程度进行量化以及原因探讨,从而归纳形成各影响因素的基本规律,以便为电工钢实际生产、用户使用提供科学指导。结果表明:试样宽度增加,反复弯曲次数也会不断增加,晶粒位向对取向电工钢的反复弯曲次数影响较大,当支座顶部到拨杆底部的距离减小或拉紧力增加时,反复弯曲次数会不断减小,但当拉紧力达到60N以上时,对反复弯曲次数影响不大,试样经退火后,反复弯曲次数略有上升。 The reverse bend number is an important performance of electrical steels′capabilities,affecting the machining performance directly when the customers used.It investigated some factors,such as sample′s width,sample′s tension load,grain orientation and equipment,how to effect the reverse bend test for electrical steel,measured the influence degree,and discussed the reason,in order to form basic rules which could be guided the manufacturing and using for electrical steel.Results showed that the rev... 

介绍了国内、外电工钢极薄带的生产现状及市场应用的情况,以及典型生产企业的生产规模、产品性能和应用领域,指出扩大高牌号无取向电工钢生产、提高产品质量是目前电工钢发展的迫切要求。 The production situation and market application of ultra thin electrical steel strip at home and abroad were described.The production capability,product property and application area of typical corporation were introduced.The results indicate that the urgency needed of electrical steel development is expanding high-grade non-oriented electrical steel production and improving products quality at present. 

【作者】 王爱华； ...

采用EBSD技术研究了有、无拉应力作用下无取向硅钢在晶粒长大过程中织构转变及晶界变化的规律。结果表明:在晶粒生长期间,无应力作用下的硅钢中,{111}〈112〉,{111}〈110〉织构组分强化,而{100}〈001〉织构组分弱化;与无拉应力作用下的情况相比,施加5MPa的拉应力时,{111}〈112〉,{111}〈110〉织构组分强化的速率下降,{100}〈001〉织构组分变化不明显。对于在晶粒生长期间持续变化的{111}〈112〉,{111}〈110〉和{100}〈001〉织构组分而言,虽然有、无拉应力作用下硅钢的{111}〈112〉和{111}〈110〉织构组分的高取向差角度晶界频率均下降,而{100}〈001〉织构组分的高取向差角度晶界频率则上升,但当有拉应力作用后,{111}〈112〉和{111}〈110〉织构组分的高取向差角度晶界频率下降的速率变小,{100}〈001〉织构组分的高取向差角度晶界频率上升的速率稍有变小。通过对无取向硅钢在晶粒长大过程中织构转变及晶界变化规律的研究,分析了合金原子在晶界的偏聚行为。 The rules of texture and grain boundary transformation in the nonoriented silicon steel under applied stress or without applied stress during grain growth were investigated by EBSD.The results show that the {111}〈112〉 and {111}〈110〉 components in the nonoriented silicon steel without stress are strengthened during grain growth whereas {100}〈001〉 component is weakened,but the growth rate of {111}〈112〉 and {111}〈110〉 component decreases,while the area fraction of {100}〈001〉 component doesn’t chang... 

本发明公开了一种可替代高磁感取向硅钢常化退火的热处理方法。该方法包括对所述取向硅钢的铸坯依次进行热轧、酸洗和冷轧，省去了常化酸洗工序中的常化退火工艺。所述热轧工序包括加热、粗轧和精轧过程，所述精轧过程中，热轧板离开精轧机最后一个机架时的温度达到1000～1050℃；或者，所述酸洗工序后，对热轧板进行通电加热至1000～1050℃；然后，对热轧板采用短时通电加热控制冷却速度，通电加热2‑5s使热轧板的温度降至940～960℃。采用该热处理方法得到高磁感取向硅钢常化板等效织构，满足生产高磁感取向硅钢的织构组分条件，其简化了高磁感取向硅钢的制造工艺，降低了生产成本和能耗，提高了生产效率。

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... 

本发明涉及一种提高低温高磁感取向硅钢附着性的方法，该方法在现有低温高磁感取向硅钢连续式脱碳退火炉中，通过在脱碳退火前区通入氮气、氢气干式混合气，在脱碳退火后区通入氮气、氢气湿式混合气进行脱碳，在渗氮区通入氮气、氢气湿式混合气及氨气进行渗氮，解决了低温高磁感取向硅钢附着性不好的难题。本发明方法提高了钢中总氧量、增加了氧化层厚度、改善了氧化层结构，经高温退火后生成了致密的硅酸镁底层，附着性大幅提高，测试结果均在C级以上，大部分样品在B级以上。

某厂对电工钢的轧制策略进行了优化，粗轧道次由“1+5”改为“1+3”。在优化后的生产过程中，每次变换钢种，烫辊材就会出现窄尺现象，而紧随其后的电工钢板则出现超宽现象。文中针对该问题，介绍了宽度设定模型和宽度自适应模型的原理，阐述了该问题出现的原因及解决方案，并通过对宽度自适应模型的应用研究及优化攻关，有效地解决了问题，大幅提升了实物质量，降低了宽度封锁率。 The rolling strategy of electrical steel was optimized in a factory,and the rough rolling pass was changed from “1+5”to“1+3”.Subsequently,the following problems were occurred in the production process:when the steel grade changed,the roasting roller steel before the electrical steel appeared the narrow width phenomenon,and then the electrical steel appeared the ultra-wide phenomenon.This paper introduced the principle of width setting model and width adaptive model,and expounded the causes and s...