硅钢资料

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... 

本发明公开了一种无取向电工钢清洗工艺，包括以下步骤：1)在脱脂剂箱体中添加脱脂剂溶剂，通过喷射泵将脱脂剂分别从上下两路管道喷出，经过流量控制电磁阀进入喷射梁，通过喷嘴喷洒在带钢表面；2)带钢轧制后温度为100～150℃，速度为600～1000m/min，带钢表面高温确保脱脂剂与带钢表面残留油脂反应充分，且在高速下喷射的脱脂剂与带钢相向而行，使带钢表面反应后残留硅泥、铁粉被迅速带走；3)喷射后的脱脂剂流入收集槽中，通过泵重新打入脱脂剂箱体中，实现脱脂剂的循环利用。其利用轧制时产生的高温及高速对带钢表面残留乳化液斑迹、铁粉、硅泥进行清洗，清洗彻底高效。

根据新日铁、JFE及浦项等国外钢铁公司2008年以来在日本专利局、欧洲专利局(EP)及世界知识产权组织(WIPO)申请公开的有关生产Hi-B取向电工钢典型专利技术,概述了近年来国外大型钢铁企业采用低温板坯加热(坯加热温度<1 280℃)技术生产Hi-B取向电工钢主要技术重点,即将调节关键化学成分Al、N、Sn及Sb等与工艺改进相结合。最后介绍了国外大型钢铁企业采用低温板坯加热技术生产Hi-B取向电工钢实例。 The latest developments on technology for manufacturing Hi-B grain oriented electrical steel sheets developed by Nippon Steel Corp.,JFE Steel and POSCO were described according to the patents published by World Intellectual Property Organization,Japan Patent Office and European Patent Office over the recent years.The low temperature slab heating process(particularly slab-heating temperature<1 280 ℃) together with suitably adjusting key chemical elements such as Al,N,Sn and Sb elements was the... 

【作者】 卢鹏； ...

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。

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... 

本发明涉及一种常化后免酸洗生产取向硅钢的方法，取向硅钢的生产工艺路线为：冶炼→连铸→热轧→常化退火→拉伸矫直→抛丸→冷轧→脱碳退火→渗氮→涂MgO→高温退火→热拉伸平整及涂绝缘膜；本发明在常化退火后通过物理方法去除带钢表面的氧化铁皮，且效率高、效果好、操作简单、易于控制；与常规工艺相比，省去了酸洗及后续废酸处理工作，排除了酸雾对环境的污染，消除了取向硅钢带因酸洗而产生的潜在缺陷，产品质量更加稳定可靠。