硅钢资料

一种无取向性电磁钢板，其母材的化学组成以质量％计为：C：0.0010～0.0040％、Si：3.5～4.9％、Mn：0.05～0.20％、Al：0.05～0.45％、P：0.030％以下、S：0.0030％以下、N：0.0030％以下、O：0.0100～0.0400％、Ca：不足0.0010％、Ti：不足0.0050％、Nb：不足0.0050％、Zr：不足0.0050％、V：不足0.0050％、Cu：不足0.20％、Ni：不足0.50％、Sn：0～0.05％、Sb：0～0.05％、剩余部分：Fe和杂质；满足[4.0≦Si+Al≦5.0]；除了从母材的表面到深度方向10μm的位置以外的区域的O含量不足0.0050％。

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 ... 

本发明提供了一种电工钢表面涂层剂及使用方法，所述电工钢表面涂层剂包括如下的压力重量份组分：碲化合物10～50份，树脂10～30份、硅烷偶联剂0.5～5份、柠檬酸13～18份，将得到的电工钢表面涂层剂涂布在钢基表面，加热干燥，烧结，形成涂层。形成的涂层附着力强，生产涂覆质量较好，过钢量达到预期2000吨以上，具有良好的防锈性能，磨损程度较低，同时绿色环保。

分别采用传统冷轧轧制液和纳米TiO₂的冷轧轧制液,对无取向硅钢板进行了四辊冷轧实验.重点研究两种冷轧轧制液的轧制润滑性能和对轧后硅钢薄带表面质量和耐蚀性能的影响.通过场发射电子显微镜和能谱仪对使用两种轧制液轧后得到的硅钢薄带表面形貌和成分进行了分析.给出了轧制液中TiO₂纳米粒子在轧制过程中的抗磨减摩机理.在轧制载荷较高时,纳米TiO₂轧制液具有优良的轧制润滑性能并能显著改善轧后硅钢薄带的表面质量.同时在高载荷作用下,TiO₂纳米粒子被压入硅钢薄带基体,形成一个滑动系来支撑载荷,从而使润滑膜的耐磨性提高. Non-oriented silicon steel strips were rolled on a four-high cold rolling mill lubricated by a traditional cold rolling liquid and a nano-TiO₂ cold rolling liquid,with emphasis on studying the rolling lubrication performance of both the liquids and their effect on the surface quality and corrosion resisting property of the silicon steel strips.The surface micrograph and composition of the silicon steel strips after being rolled with both the liquids were characterized by field emissio... 

【作者】 陶永根； ...

 

适用范围 本标准规定了700 MW及以上级大电机用冷轧无取向电工钢带的术语和...

研究了热处理工艺(退火温度、保温时间、冷却方式)对含Mn的Fe-6.5wt%Si高硅钢热轧带的显微组织及硬度的影响。结果表明,退火温度对Fe-6.5wt%Si合金的组织和显微硬度均有较大影响,随退火温度升高,平均晶粒尺寸和显微硬度均明显增大。小于1 h退火时,晶粒长大缓慢,而长时间(>1 h)退火时,一些次表层晶粒将发生异常长大。水冷组织比空冷组织略细小,但水冷显著降低了显微硬度。Mn含量提高能抑制850℃退火时晶粒的长大,并且促进退火后高硅钢的软化。 The influences of heat treatment process(annealing temperature,heating time,cooling methods) on the microstructure and microhardness of Fe-6.5wt%Si high silicon steel containing manganese for hot rolled strip were studied.The results show that the annealing temperature has a great effect on the microstructure and microhardness of Fe-6.5wt%Si alloy,and as the annealing temperature increases,the average grain sizes and microhardness will significantly increase.When annealing time for less than 1 h... 

介绍了重庆钢铁股份有限公司炼钢厂生产低碳低硅钢的脱氧工艺,对连铸过程中水口结瘤的原因进行分析,并提出了优化措施。生产实践表明:钢水中的活性氧质量分数控制在10×10-6～30×10-6时,单中包浇铸炉数由6～7炉提高到11～12炉,同时能保证连铸顺行和减少铸坯气孔。 The deoxidation process of low-carbon and low-silicon steel in steel plant of Chongqing Steel was introduced.The nuzzle clogging was analyzed and some measures were put forward.Production experiments showed that when the active oxygen was controlled between 10×10-6～30×10-6,the amount of furnaces would rise from 6～7 to 11～12,which will make the casting process work well and reduce casting holes. 

本发明公开了一种硅钢含铬涂层废液处理过程中六价铬浓度在线监控方法，提出一种准确检测废液中六价铬含量的方法和检测时间的确定，实现了含铬废水原液中六价铬含量预测和焦亚硫酸溶液添加量的确定及六价铬在线检测预处理系统的启动时间的确定，确保处理装置安全高效运行。在酸化还原罐上安装氧化还原电位检测仪，实时检测含铬废液在整个处理过程中ORP的变化，推测含铬涂层废液中六价铬还原情况，初步判断还原过程的终点，为在线六价铬自动检测仪的启动提供依据，最终实现解毒后废液六价铬的含量低于0.05mg/L，达到六价铬含量超低处理的要求。

本发明揭示了一种高牌号无取向硅钢及其生产方法，生产方法包括冶炼、连铸、热轧、酸洗、切边、常化、冷轧，冶炼最终所得钢水化学成分以质量百分比计为：C≤0.005％、Si≥2.8％、Als0.5～1.2％、Mn0.25～0.8％、P≤0.02％、S≤0.0040％、N≤0.0020％、Nb≤0.0020％、V≤0.0020％、Ti≤0.0020％，其余为Fe以及不可避免的杂质；切边工序对热轧卷板的两侧进行切边，单侧的剪切宽度为10～20mm；常化在罩式退火炉中进行，均热温度为T＝{(990～1010)‑100×[30×(Si)+20×(Al)]}℃，(Si)为Si的质量百分比，(Al)为Al的质量百分比，均热时间为6h，之后冷却；钢卷在罩式退火炉中冷却至预设温度T0时取出送至冷轧线冷轧，T0为120～180℃，第一道次轧制时的轧制力恒定且轧制力为11000～12000kN。本发明可避免高牌号无取向硅钢在冷轧过程中由于脆性高而导致的频繁断带。

冷轧取向硅钢工程中有很多的超长、大体积以及薄壁的混凝土结构,裂缝控制是土建施工的关键。在工程中,按照\"抗放兼施、先放后抗、以抗为主\"的原则,采用\"无缝分块跳仓法\",防止超长混凝土结构收缩产生裂缝;在隧道和池体的底板与墙板施工中,采用\"整体浇筑\"法,避免了墙板因约束应力而产生的裂缝。 In the Cold-rolled grain-oriented silicon steel project,there are many overlength,bulk mass,thin-walled concretes structures,how to control the crack is the key of civil engineering construction.In these projects,according to the principle of\"release with resist,resist before release,resist is dominant \",the crack of the over-long structure and shrinkage can be prevented by the method of\"seamless block skip bin \".In the construction of the bottom plate and wall of the tunnel and the pool,the cra...