硅钢资料

本发明提供了一种超高磁感无取向硅钢及其制造方法和在汽车发电机生产中的应用，成分：C：≤0.005％、Si：0.5‑1.2％、Mn：0.1‑0.5％、P：0.01‑0.1％、S：≤0.004％、Al：≤0.005％、N：≤0.005％、Ti：≤0.003％，余量为铁和不可避免的杂质。通过成分设计，配合CSP薄板坯连铸连轧工艺、常化工艺，不用添加贵金属元素，不添加贵金属元素，流程短、成本低、磁感高、性能稳定；节省成本的同时，具有优良的磁性能，采用本发明生产的汽车发电机铁芯，与常规产品生产的铁芯相比，重量可减轻15％以上，缩小了发电机尺寸，满足汽车发电机小型化、高效化的要求。

【作者】 朱凤泉； 黄生银； ...

对CSP流程生产的无取向电工钢M50W800不同尺寸样品的磁性能进行了测试和分析,结果表明:采用不同单片检测的磁性能结果与标准的Epstein方圈样品检测对比,存在明显的偏差;且同一尺寸的单片纵横向样品之间相比较,对应的磁性能差异性也较大。几种不同尺寸的单片样品,以320mm×30mm尺寸的纵横向平均值最接近标准Epstein方圈样的性能值,其铁损偏差最小。 The magnetic properties of M50W800 non-oriented electrical steel produced by CSP process were tested and analyzed with samples of different sizes,showing that significant deviation existed compared to that of Epstein square circle sample.In particular,obvious difference in magnetic properties also existed between longitudinal and transverse samples of the same size.For test samples of different sizes,the average magnetic properties of 320mm×30mm samples are the closest to that of Epstein square ... 

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 ... 

本发明公开了一种适宜缠绕式加工的低铁损无取向硅钢及其生产方法，属于硅钢生产技术领域。本发明的无取向硅钢包括以下质量百分比的元素：Si：1.5～2.5％，Mn：0.15～1.0％、Als：0.5～1.5％，其余为Fe及不可避免的杂质。其生产工艺步骤为：铁水预处理、转炉冶炼、真空处理、连铸；加热热轧；常化处理；冷轧、退火；保温、冷却；涂覆绝缘层。本发明通过对无取向硅钢的组分及其配比，结合工艺操作进行优化，能够生产得到电磁性能及延伸率均优异的无取向硅钢，从而能够有效满足电工钢缠绕式加工及使用需求，且其制造工序流程短、成本相对较低。

本发明涉及一种冷连轧法生产无取向高硅钢的方法，RH真空脱碳处理后，铝脱氧及部分铝合金化，合金化后大罐钢水净循环大于3次或大于5分钟；熔炼合格钢水至连铸开浇前静置时间大于二十分钟；控制过热度5～15℃；采用电磁搅拌，控制等轴晶比例45％以上；3)热轧工序板坯装炉温度大于750℃；常化使晶粒尺寸在90～110μm范围内；连续退火炉加热段温度设定950～1150℃，均热段温度设定900～1050℃，全氮气干气氛保护，控制晶粒尺寸120～170μm。生产全过程中的热履历参数控制，充分发挥设计的微合金元素功能，改变析出物的组成、大小、形态及分布。

为开发高效电机用冷轧无取向电工钢,借助实验室薄板坯连铸连轧模拟设备及扫描电镜、透射电镜等检验手段研究了成分、组织、织构和析出物等对无取向电工钢磁性能的影响规律;结果表明:常化处理使组织均匀化并增加有利于磁性提高的织构组分;采用CSP流程开发的高效电机用无取向电工钢铁损平均值3.4 0 W/kg,磁感≥1.68 T。 In order to develop electrical steel for high efficiency motor,effect of components,microstructure,texture and precipitation on magnetic property of electrical steel are analyzed.From the result,normalizing treatment makes microstructure uniform and increases component of favorable texture.Iron loss of electrical steel developed by CSP line is 3.40W/kg and magnetic induction is more than 1.68T. 

介绍了CSP工艺生产无取向电工钢各工序的设备特点、采用的工艺控制手段和电工钢产品质量情况,结合生产实践证明了马钢CSP工艺开发的无取向电工钢产品丰富了薄板坯连铸连轧的品种结构,发挥了薄板坯连铸连轧生产无取向电工钢性能均一、稳定的特点。 The equipment characteristic,the process control method and the quality of non-orientated silicon steel by CSP process were introduced.Combined with the production situation,it is proved that production of non-orientated silicon steel developed on Masteel CSP line would enrich product structure of thin slab continuous casting and rolling,and it exerts stable performance of non-orientated silicon steel. 

对应用动态加热进行短时温度退火的取向电工钢进行了二次再结晶研究。所进行研究的实验用取向电工钢是经过终冷轧和后续罩式退火后的一条工业化生产线生产的。研究结果表明,运用短时热处理条件可引起研究钢完全的异常晶粒长大。在实验室处理的材料的织构和金相组织与工业化生产的经过终退火而获得的相同的取向电工钢类似。但是,在实验室处理的取向电工钢的二次再结晶的矩阵中可观测到\"寄生\"晶粒。从磁性观点看,这些\"寄生\"晶粒含有不理想的{111}取向织构。 The present study was made to investigate secondary recrystallization in grain-oriented steels annealed at short time temperature exposures with application of dynamical heating.The investigated GO(Grain Oriented) steels for experiments were taken from one industrial line after final cold rolling reduction and subsequent box annealing.It was shown that application of short time heat treatment conditions could lead to complete abnormal grain growth in the investigated GO steel.The texture and mic... 

本发明公开了一种切口耐蚀性良好的无取向硅钢及其生产方法，属于电工钢生产技术领域。本发明的无取向硅钢包括以下质量百分比的元素：Si：0.2～2.7％，Mn：0.15～1.0％、Als：0.5～1.0％，Cr：0.1～0.3％；Ni:0.2～0.5％，P：≤0.01％，其余为Fe及不可避免的杂质。其生产工艺为：铁水预处理、转炉炼钢、真空处理、连铸、加热、热轧、酸洗、冷轧、退火处理和涂覆绝缘层。本发明通过合理的成分配比以及相匹配的生产工艺进行生产，最终得到了切口耐蚀性优良的低铁损、高磁感的无取向硅钢，从而能够有效满足电工钢的使用需求。

研究了退火温度对3.1%Si无取向硅钢组织和磁性能的影响规律。结果表明:退火温度从940℃提高至1 000℃,平均晶粒尺寸由98μm增加到145μm,铁损P_1.5/50从2.576 W/kg降低至2.408W/kg。随着退火温度的升高,γ不利织构组分强度逐渐降低,{111}〈112〉织构组分强度降低约16%,磁感B₅₀逐渐升高,磁性能水平提高。 The effects of annealing temperature on microstructure and texture and magnetic properties of 3.1%Si non-oriented silicon steel were investigated in this paper.The results showed that,when the annealing temperature increased from 940℃ to 1 000℃,the average grain size of metallographic structure increased from 98μm to 145μm,the iron loss value P_1.5/50 decreased from2.576 W/kg to 2.408 W/kg.And as the annealing temperature increased,the strength of the unfavorable texture componentγgrad... 

一种高强型高频电磁性能优异的硅钢薄带板，钢中化学成分按重量百分比计为：C≤0.0027％、Si3.10％～3.35％、Als0.80％～1.2％、Mn0.20％～0.85％、P≤0.050％、S≤0.0020％、N≤0.0020％、Ti≤0.0020％、V≤0.0020％、Nb0.0050％～0.080％，其余为Fe和不可避免的杂质。本发明的无取向硅钢薄带产品用于新能源汽车驱动电机的制造，其强度高，中高频电磁特性优异。