钢厂
辉光放电发射光谱法测定电工钢中8种元素
通过对辉光放电发射光谱法分析电工钢样品光谱行为的研究,分析其工作参数如:电压、电流、预溅射时间和积分时间对光谱强度和稳定性的影响,并以铁为内标元素,优化了工作参数。确定了直流辉光放电光谱法测定电工钢中碳、硅、锰、磷、硫、铬、镍、铜共8种元素的定量分析方法,并对该方法分析的精密度和准确度进行验证,结果表明,各元素的测定结果与认定值和其他方法测定值一致,测量元素结果RSD值小于2%。 Based on research on analyzing the spectrum behavior of the sample taken from the electrical steel by glow discharge optical emission spectrometry,the effect of its operational parameters such as current,voltage,pre-sputtering time and integrating time on the spectral intensity and spectral stability is analyzed.Taking the Fe as an element applied by internal standard method,these operational parameters are optimized,and therefore the quantitative analysis method for testing eight kinds of eleme...
铜含量对TSCR工艺生产取向硅钢热轧织构的影响
取向硅钢热轧板中织构梯度对发展完善的二次再结晶十分关键,通过添加铜可以显著降低取向硅钢板坯加热温度,从而影响热轧板织构分布。利用X射线衍射仪,分析了实验室模拟薄板坯连铸连轧(TSCR)工艺的3种不同铜含量的取向硅钢热轧板织构。结果表明:不同铜含量热轧板表面到厚度1/4处均为弱的热轧织构,热轧板心部主要为{100}面织构;铜含量约在0.4%时,热轧板次表层的{110}<001>织构比例最高,而热轧板心部的{100}<110>织构比例最低;铜含量对热轧织构中{114}<110>和{001}<100>织构发展有显著影响。 The texture gradient in hot rolled grain oriented silicon steel strip is one of the essential factors to achieve a perfect secondary recrystallization.The addition of copper can significantly reduce the slab reheating temperature of grain oriented silicon steel,so as to impact the texture distribution in the hot rolled strip.The texture of hot rolled grain oriented silicon steel strip as-rolled by thin slab casting and rolling process(TSCR) in laboratory with three different copper contents was ...
无取向电工钢孔洞缺陷控制实践
针对马钢无取向电工钢孔洞缺陷的分布规律及形貌特征,对缺陷样进行了显微分析,并利用生产实绩数据分析了该缺陷产生的原因。结合热轧生产过程,主要通过避免带钢撞击导卫以及降低导卫结瘤的产生等措施,可有效抑制热卷异物压入产生,从而降低冷轧工序孔洞的产生。 In viewing of the distribution and morphology characteristics of the hole defect of non-oriented electrical steel in Maanshan Iron and Steel Co.,Ltd.,the causes of the defect were analyzed by micro analysis of the defect sample and the production data.Combined with the production process of hot rolling,by avoiding the impact of strip steel on the guide and reducing the nodule formation on the guide,the pressing of foreign bodies in hot coiling could be effectively suppressed,thus reducing the fo...
取向硅钢常化水冷温度模型及控制方法研究
取向硅钢常化工序主要采用现场实测带钢温度的方式测定冷却速率,并通过稳定冷却水温、调整冷却水量及喷梁运行数量等方式保证合理的冷却速率,给常化工艺设计和生产带来诸多不便。通过对常化工艺水冷过程带钢的传热分析求解,在建立带钢水冷温度模型的基础上,研究了不同冷却工艺参数对带钢温度及冷却速率的影响规律以及冷却工艺的交互作用结果。结果表明:模型计算结果能够较好地反映取向硅钢在常化水冷过程中的温度及冷却速率的变化,其计算误差为0.80%~4.11%;在特定取向硅钢厚度规格和常化工艺下,随着常化冷却水量及有效冷却长度的增加,带钢水冷温度及冷却速率与呈非线性变化;常化水冷工艺主要通过调控带钢与冷却水之间热交换量和交换时间实现对带钢温度的控制,实际生产中需综合考虑机组速度、冷却水量及有效冷却长度之间的交互作用,选定喷梁投入数量和冷却水量以获得稳定的冷却速率。 The cooling rate of normalization process mainly determined by measuring the grain oriented silicon steel strip temperature on site, and ensures the cooling rate by stabilizing the cooling water temperature, adjusting the cooling water volume and the operation quantity of spray beam, which brings inconvenience to the normalization process design and production. Based on the heat transfer of strip in the water cooling section of normalization process, the water cooling temperature model for the n...
CN202110953161.2一种含磷无铝高效无取向硅钢生产方法
本发明涉及一种含磷无铝高效无取向硅钢生产方法,生产方法取消常化工艺,具体步骤如下:1)将钢水冶炼至目标成分后,浇铸成坯;2)板坯热装,热装温度≥500℃,热轧板坯加热炉均热段板坯温度1150~1200℃;终轧温度控制在860~930℃,卷取温度700~800℃3)酸洗后冷轧,控制冷轧整体压下率80%以内,至成品厚度;4)连续退火炉快速加热段温度设定1050~1180℃,增加有利织构组织形核,均热段温度设定830~950℃,全氮气干气氛保护,退火工艺速度120~150m/min,满足晶粒度8~4级。本发明不需进行热轧卷常化处理,降低了制造成本。
CN202110176053.9一种常化后免酸洗生产取向硅钢的方法
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。
成品第二次退火工艺对高牌号无取向电工钢35W300组织和性能的影响
对高牌号无取向电工钢35W300的成品进行了第二次退火,对第二次退火后的成品性能、纵横向磁性能差异和组织变化进行了分析。结果表明,随着第二次退火温度的升高,晶粒长大,磁性能优化。铁损平均值下降0.087 5W/kg,磁感平均值升高0.008T。第二次退火温度为820℃的产品的磁性能能够满足用户使用要求。 The product of high grade non-oriented electrical steel 35W300 was annealed at the second time.Microstructure,the difference of magnetic properties in the vertical and horizontal and were studied.The results show that the grain grew up and magnetic properties optimized with the increase of annealing temperature for the second time.Iron loss average declines in 0.0875 W/kg,magnetic induction average increases 0.008 T.The magnetic properties can meet the requirements of users at the second anneali...
CN202111444256.8无取向硅钢RH顶枪喷粉脱硫工艺
本发明提供了一种无取向硅钢RH顶枪喷粉脱硫工艺,RH脱碳结束测温定氧,立即加入铝粒脱氧合金化、之后立即依次连续加入合金进行成分调整,合金加完后立即开始顶枪喷粉;加入铝粒的量=铝粒理论加入量+0.2‑0.4kg/t钢;喷粉时,控制喷粉速度与钢液循环流量相匹配;本发明从真空条件下脱硫热力学和动力学角度出发对具有顶枪喷粉功能的RH脱硫工艺进行改进,提高脱硫率。
CN202111239882.3一种适宜缠绕式加工的低铁损无取向硅钢及其生产方法
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。
CSP流程生产高磁感无取向电工钢磁各向异性研究
对CSP流程生产的高磁感无取向电工钢50W1300在偏离轧制方向不同角度处的磁性能进行了测试和分析。结果表明:在偏离轧向不同角度处,磁性能差异显著,尤其在α=60°时磁感最低;偏离轧制方向不同角度处的磁性能大小取决于织构类型、强度及分布状态;增强{100}<0vw>和α、η取向的有利织构组分,降低不利的γ取向织构组分,且使有利织构组分分布越漫散,磁各向异性越小。 Magnetic properties of high magnetic induction non-oriented electrical steel 50W1300 produced by CSP processes were investigated with different direction in relation to the rolling direction.The result shows that magnetic properties are significantly different in relation to the rolling direction,in particular,the minimum magnetic induction occurs at 60° in relation to the rolling direction.Magnetic properties of different directions in relation to rolling direction depend on type and distributi...
CN202110818854.0一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
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。
高牌号无取向电工钢技术发展及应用
对高牌号无取向电工钢国内生产情况、工艺技术、产品性能及应用领域等进行了阐述,并探讨了高牌号无取向电工钢产品的发展趋势。 This paper introduces basic facts on the production status,process technology and products’ properties and their applications of non-oriented electrical steel with high grade at home,and then discusses the development trend on technology for producing the non-oriented electrical steel with high grade.

