硅钢资料

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 ... 

对冷轧无取向硅钢在冶炼过程中各个工序的顶渣进行了检测,分析了顶渣变化原因,并得出结论:硅钢生产宜采用复吹转炉,以降低吹炼终点渣中TFe含量,进而减轻对精炼的压力;使用低S、低Al2O3含量中间包覆盖剂;RH脱氧及合金化顺序采用先加硅铁后加铝;首罐宜经LF提温并降低渣中TFe。 The top-surface slag used for the various production processes in smelting coldrolled non-oriented electrical steel is tested and based on tested results the cause of the top surface slag change is analyzed.So it is concluded that the combined blown converter is more suitable to be used for smelting electrical steel in order to reduce the content of TFe in slag at blow end point and then much better results can be achieved during the period of refining.Secondly the tundish flux contenting low co... 

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... 

本发明公开了一种适应高频率工况下低铁损无取向电工钢及其生产方法，所述生产方法包括以下步骤：钢水连续浇铸成板坯—热轧—正火—酸洗—冷轧—连续退火—涂绝缘涂层并固化；所述冷轧步骤中，采用六辊单机架往复式轧机经5道次一次冷轧至目标厚度，冷轧过程中前三道次采用变速异步轧制方法，使钢板表层在剪应力作用下位错密度增加，这样在退火后表层晶粒尺寸细化而心部晶粒粗大，通过本发明的方法可生产得到心部为粗大等轴晶粒，表层为纳米级细等轴晶粒的电工钢产品，该产品的铁损P1.5/50≤2.35W/kg，P1.0/400≤14.0W/kg。

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. 

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。

结合冶炼无取向硅钢的生产实际,对钢中硫的来源,以及炉渣性质、钢水温度、底吹强度对脱硫的影响进行了分析。研究表明,转炉钢中硫的主要来源为铁水、废钢、铁水渣及石灰带入;冶炼硅钢时,终渣碱度为3.0~3.5,w((FeO))≤20%,终点钢水温度大于等于1 680℃,加大底吹搅拌强度能提高转炉脱硫效果。硅钢平均出钢硫的质量分数为0.004 8%,能满足无取向硅钢对硫含量的要求。 With the actual production of non-oriented silicon steel,the source of sulphur and the effect of metallugic parameters like slag properties,temperature of molten steel and bottom stirring on desulphurizing ability were investigated.The results show that the main source of sulphur is molten metal,scrap,the remaining slag volume in hot metal and lime.The degree of desulphurization for smelting silicon steel can be increased through adopting the following measures,such as the basicity of finishing ... 

本发明涉及一种提高取向硅钢冷轧加工性的生产方法，工艺流程为：冶炼、连铸、热轧、常化、酸洗、冷轧、脱碳渗氮、涂MgO、高温退火、涂绝缘层及热拉伸平整；粗轧中坯厚度35‑45mm，两段常化后进行带钢横向分段式冷却水分布。本发明通过对热轧中坯厚度、终轧温度及卷取温度，常化冷却水量及控制方式的调控，使轧前表层晶粒尺寸降低5‑10μm、珠光体体积分数降低6％，轧材冷轧加工性明显改善、成材率可提高8％以上。通过后续冷轧、脱碳退火和高温退火等工序处理，可保证完善的二次再结晶组织及良好磁性能。