钢厂
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。
CN202110288598.9一种取向硅钢热轧钢带的板形控制方法
本发明涉及一种取向硅钢热轧钢带的板形控制方法,所述取向硅钢热轧钢带的工艺流程包括铸坯加热过程、轧制过程及层流冷却过程;其中轧制过程中采取取向硅钢与普钢交叉轧制的方式;粗轧过程采取R1轧制1道次、R2轧制5道次的1+5轧制工艺,并控制轧制工艺参数;精轧过程中控制F1~F7轧制工艺参数。本发明通过设定合理的交叉轧制工艺及取向硅钢热轧工艺,使取向硅钢的轧制稳定性大幅提高,取向硅钢带形控制良好,凸度控制在30~50μm之内,楔形控制在30μm之内,板形平坦度控制在25iu之内;从而为冷轧工序提供了优质原料。
CN202111010835.1一种无取向电工钢清洗工艺
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。
CSP工艺生产无取向电工钢
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.
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...
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...
CN202111317124.9一种宽频率低铁损无取向电工钢及其制备方法
本发明公开了一种宽频率低铁损无取向电工钢及其制备方法,属于无取向电工钢生产制造技术领域。它从电工钢表面向内依次包括0.005mm~0.1mm的渗透层和钢材内芯;所述渗透层是由硅原子向电工钢内渗透形成,渗透层中的硅元素含量为3wt%~8wt%;所述钢材内芯包括2.0wt%~5.5wt%的硅元素和不少于93.2wt%的铁元素。本发明能保证无取向电工钢具有低频低铁损性能同时有效降低高频条件下的铁损,具体铁损性能为:铁损P1.5/50≤2.35W/kg,铁损P1.0/400≤13.8W/kg。
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 ...

