硅钢资料

一种低温高磁感取向硅钢的热轧方法：经转炉冶炼并浇注成坯；对铸坯加热后进行粗轧：首先确定粗轧减宽量；根据所确定的粗轧减宽量进行粗轧；进行精轧；常规进行下工序。本发明采用低温板坯加热技术，降低了板坯烧损和修炉负担，且边裂发生率比现有技术的不低于18%的基础上能降低5%以上，由此节约资源及降低能耗。

研究了冷轧大压下量,950℃退火时间对一种新型含铜无取向电工钢晶粒度和织构的影响。结果表明,大压下量冷轧,随压下量的增加,退火晶粒向γ线聚集,形成强{111}<112>织构。提高冷轧压下率,退火织构{111}<100>,{110}<001>强度减弱,增加退火时间,退火织构{111}<110>,{100}<001>,{110}<001>强度变弱。采用87.5%冷轧压下率和950℃退火60 s,有利织构{100},{110}占有率最大。 The effect of annealing(950 ℃) time with high cold rolling reduction on grain size and texture of a new non-oriented electrical steel containing copper was investigated.The results show that for high cold rolling reduction,most annealed grains are oriented along γ-fibre with increasing cold rolling reduction ratio and strong texture {111}<112> is formed.With increasing the cold rolling reduction ratio,the intensity of annealed texture {111}<110>,{011}<100> decreases.With increa... 

以构建高磁感、低铁损、免轧制高硅电工钢铁芯为出发点,提出采用单辊甩带制备非晶铁硅合金薄带、微氧化法在铁硅合金粉末表面包覆高电阻率铁硅氧化物薄膜制备核壳异质结构高硅电工钢纳米粉末、放电等离子烧结快速成形制备颗粒间绝缘的高硅电工钢铁芯。研究了不同氧化包覆时间对SPS烧结试样密度、物相组成、微观结构和静磁性能的影响。研究表明,在氧化包覆5h烧结温度800℃工艺条件下,制备的6.5%Si高硅电工钢铁芯的静磁性能最佳,饱和磁化强度为128.84A.m2/kg、矫顽力为2.25kA/m、剩磁为3.47A.m2/kg。其饱和磁化强度与粉末压延法制备的高硅钢相当,但矫顽力降低了1/3。 The paper takes preparation 6.5%Si steel with high induction,low core loss and removing rolling as the starting point,amorphous Fe-Si ribbons was synthesized by melt spinning method,6.5%Si steel nanopowders with high resietivity core shell structure was prepared by the slight oxidation process and 6.5% Si steel iron core with evaluating internal was sintered by spark plasma sintering process(SPS).The essay focuses studies the effects of different oxidation cladding time on sample density,phase c... 

本发明提供退火隔离剂的制备方法以及退火隔离剂和方向性电磁钢板。由该方法得到的退火隔离剂纯度高、分散性以及密接强度优异，可以在方向性电磁钢板表面形成均匀致密的镁橄榄石层。退火隔离剂的制备方法，其包括：工序(1)：将氧化镁和铵盐溶液混合并反应，制备镁盐溶液和氨，然后使精制的镁盐溶液与氨反应而得到氢氧化镁；工序(2)：将得到的氢氧化镁的一部分在155～230℃下高温熟化，并且将得到的氢氧化镁的另一部分在10～100℃下低温熟化；工序(3)：将在上述各条件下熟化的氢氧化镁混合、烧成，得到氧化镁用于退火隔离剂。

利用光学显微镜（OM）和扫描电镜（SEM）研究了不同稀土Ce含量的50W470无取向硅钢的铸坯、热轧板和冷轧退火板的宏观和微观组织，并采用磁性能测试仪测定其磁性能。结果表明：当稀土Ce的加入量从0增加到66×10^-6（质量分数）时，铸坯的柱状晶平均宽度从3.82 mm减小到3.24 mm,等轴晶率从43.1%增加到51.3%;热轧板的平均晶粒尺寸逐渐增加，从26.2μm增加到33.3μm,再结晶百分数从24%增加到37%;退火板的平均晶粒尺寸从36.2μm增加到39.3μm;磁性能测试表明，微观组织的变化有利于50W470无取向硅钢铁损降低和磁感提高。 Macro-structure and microstructure of as-cast plate, hot rolled plate and cold rolled annealed plate of 50 W470 non-oriented silicon steel with different rare earth Ce content was studied by optical microscope（OM） and scanning electron microscopy（SEM）, and their magnetic properties were measured by magnetic property tester. The results show that when the addition amount of rare earth Ce increases from 0 to 66×10^-6（mass fraction）, the average width of columnar crystal of the as-cast pl... 

本实用新型公开了一种硅钢炉用保护气的循环系统，包括与硅钢炉群排气管相连通的氢气提纯净化单元、与氢气提纯净化单元相连的氮氢配比单元以及与氮氢配比单元相连的用于对氮氢混合气中加入水蒸气的加湿单元；所述加湿单元与硅钢炉群的进气管相连通。本实用新型便于对尾气中的氢气回收再利用，可节省资源。本实用新型适用于硅钢退火炉等设备中，用于实现氢气的循环再利用。

对低温加热工艺生产的普通取向(common grain-oriented,CGO)硅钢的高温退火过程进行了中断实验,材料为含3.0%Si、0.5%Cu、0.009 8%S(均为质量分数)的以Cu2S为主抑制剂的普通取向CGO钢。原始板坯厚度为230 mm,于1 200℃均热后经4道次粗轧、7道次精轧至2.3mm;热轧板采用两次冷轧法轧至0.3mm,中间完全脱碳退火,最后于1 200℃高温退火。最后样品的磁性能:铁损P17/50为1.182W/kg,磁感应强度B8为1.897T。借助配有EDAX OIM电子背散射衍射(EBSD)系统的ZEISS SUPRA 55VP扫描电子显微镜,对高温退火过程中高斯晶粒的演变进行了研究,结果表明:升温过程中晶粒尺寸增长缓慢,650℃时取向分布函数(ODF)图出现高斯织构组分,但强度很弱,高斯晶粒偏离角小于9°;950℃时高斯晶粒平均生长速度超过其他晶粒;950~1 000℃时高斯晶粒异常长大,偏离角降至约3°;在950℃之前高斯取向晶粒相比于其他晶粒没有尺寸优势。 The high-temperature annealing process of common grain-oriented(CGO)silicon steel was investigated by interrupting test.The samples were rolled from CGO silicon steel slab under low reheating temperature.The CGO silicon steel,taking Cu2S as the main inhibitor,contains3.0%Si,0.5%Cu,and 0.0098%S.The original casting slab is 230mm in thickness.After 1 200℃reheating,four-pass rough rolling and seven-pass finish rolling were conducted to make the thickness of the slab get to 2.3mm.Then the hot rolled... 

为了提升新能源车用驱动电机的功率密度,各大电机厂商都在不断地提升电机转速,随之而来的问题就是电机的铁耗也在不断增高,如何降低电机铁耗成为了电机厂商必须要解决的难题。本文讨论了电机铁耗的组成部分及影响因素,并对1台8极48槽的永磁同步电机分别使用3种不同厚度的材料进行仿真,对比其效率及铁耗分布,推导出驱动电机中硅钢厚度、铁耗及成本的关系,最后对驱动电机选材提出建议。 In order to increase the power density of traction motor for new energy vehicles,major motor manufacturers have been constantly increasing the motor speed.The following problem that manufacturers have to solve is how to reduce the increasing iron loss when the motor speed is increased.The components and influencing factors of motors’ iron loss were discussed in this paper,and an 8-pole 48-slot permanent magnet synchronous motor using three different thickness materials was simulated.To compare i... 

采用ZMLMC超高梯度定向凝固装置,研究了5种凝固速率(10、35、80、150和450μm/s)对定向凝固50W600无取向硅钢的固液界面稳定性转变规律和一次、二次枝晶间距的影响。研究结果表明,在特定的温度梯度下,随着凝固速率的增加,定向凝固的固液界面由胞状晶转变为胞状枝晶,再转变为细小的树枝晶。随着凝固速率的增加,定向凝固组织的枝晶形貌逐渐细化,一次和二次枝晶间距逐渐减小,且与冷却速率之间都符合指数关系:λ1=151.73×(G L·R)-0.31,λ2=22.07×(G L·R)-0.44。当冷却速率达到4.275℃/s时,一次、二次枝晶间距分别为112μm、14.1μm。 Under the conditions of certain temperature gradient and different solidification rate,the directional solidification experiment of non-oriented electrical steel 50W600 was carried out.The microstructure of 50W600 steel was also analyzed in different solidification rate.The result shows that the solid/liquid interface of the steel undergoes an evolution from cellular,cellular dendrite and finally to fine dendrite morphologies.The dendrite refines gradually and the distance between dendrites decr... 

一种薄规格带钢或者硅钢尾部卷取控制工艺，属于热连轧带钢卷取设备技术领域，解决薄规格带钢和硅钢尾部起套导致卸卷异常、卷形合格率下降的技术问题。解决方案为：在卷取厚度小于等于2.3mm的带钢或所卷取带钢的材质代码等于硅钢的材质代码的情况下，带钢尾部到达精轧F2机架时，G辊道速度V1=K1×D×ω×π/60；带钢尾部继续前行并到达精轧F6机架时，G辊道速度V2=K2×D×ω×π/60；在卷取厚度大于2.3mm的带钢且所卷取带钢的材质代码不等于硅钢的材质代码的情况下，G辊道投滞后速度的滞后率取值范围为90%~70%。本发明具有设计合理、工作效率高、产品质量好、可有效避免产品缺陷等优点。

本发明揭示了一种无取向硅钢的生产方法。所述生产方法中：按照Si:0.3～1.2％炼钢、制坯；将铸坯加热到1050～1150℃并保温150min以上，而后轧成厚度40～45mm的中间坯，再经精轧、卷取得到厚度为3.00±0.25mm的热轧卷板，精轧开轧温度≤Ar1＝872℃+1000*(11*[Si]‑14*[Mn]+21*[Al])；当Ar1≥1000℃，终轧温度T≤840℃，否则T≤Ar1‑160℃；卷取温度≤550℃；经常化、酸连轧得到0.500±0.005mm的冷硬卷，常化温度为850～950℃；退火温度820～950℃，经成品退火、冷却、涂层和精整，得到无取向硅钢成品。

结合工业化生产的无取向硅钢,进行了RH精炼添加稀土合金实验。结果表明,1.15%(质量分数)Si钢的脱硫反应,主要发生在添加稀土合金之后的前5min。最佳的稀土合金添加量为0.6～0.9kg/t钢。钢液经过稀土处理后,加入的稀土总量越多,稀土氧硫化物夹杂物的尺寸就越大,但热轧带钢再结晶效果会逐渐变差,成品带钢晶粒尺寸先是快速长大,而后逐渐减小。最佳的钢中存留稀土含量与钢的化学成分有关,应严格控制在2.0×10-3%～6.0×10-3%(质量分数)。在此范围内,钢的铁损先是快速降低,而后缓慢升高,钢的磁感应强度则单调降低。 Based on the industrial production of non-oriented electrical steel,rare earth(RE) alloy treatment during the RH refining process was studied.The results showed that the effects of desulfurization and total concentration of RE remained in steel mainly depended on the chemical compositions of different steel grades.For 1.15wt% Si steel grade,the desulfurization reaction mainly focused on the initial 5min after RE alloy added during the RH refining process.The suitable RE alloy addition was 0.6-0....