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【作者】 张正贵; 李战库; ...
2013-05-28 147 5.8

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... 
2023-05-12 1.41k 5.8

本发明提供一种线状槽的形成图案,其兼得低装配系数化的效果和高磁通密度。在钢板的表面具有多个在横切该钢板的轧制方向的方向延伸的线状槽的方向性电磁钢板中,在上述线状槽相互间的上述钢板的表面形成从该表面凹陷的凹型缺陷,将上述钢板的上述凹型缺陷的体积分率相对于不存在该凹型缺陷的状态的钢板设为0.0025vol%~0.01vol%,以每1m2钢板为30个~200个的频率形成切断上述线状槽的上述延伸的中断部。
2021-03-04 190 6.8

本实用新型公开了一种无取向硅钢厚涂层涂层液生产用纯水制水机,包括底板,底板顶端的两侧分别固定设有固定座和存水筒,固定座顶端的中部设有蒸馏组件,蒸馏组件包括球形釜,球形釜设置在固定座的顶部,球形釜的外部固定套设有导热层,导热层的内部固定嵌设有电热丝,导热层的外部固定套设有隔热层,本实用新型的有益效果是:通过设置的电热丝通过导热层对球形釜内部的水进行加热,球形釜提供更加均匀的受热效果,水蒸气通过V形管进入L形管,通过设置的环状冷却管内部的液氮对水蒸气进行冷却,便于提供更高效的蒸馏处理,通过设置的防腐蚀磁铁网格滤板、无纺布滤层、活性炭滤层和高密度滤网层,便于提供更好的过滤效果。
2020-12-26 203 6.8

轧制力是影响冷轧带钢厚度精度的关键因素。为实现高精度的冷轧带钢厚度控制,通过优化变形抗力模型参数和摩擦系数模型参数提高冷轧轧制力模型计算精度,并使用指数平滑法的自学习算法保证轧制力精度的稳定性。在首钢股份公司迁安钢铁公司20辊森基米尔轧机生产线进行S12硅钢钢种轧制力优化试验,将优化的模型参数应用于L2并投入现场生产,结果表明该优化方法不仅提高了轧制力设定精度,而且减小了冷轧硅钢的厚度超差长度,提高了成材率。 The rolling force is the key factor which influences the accuracy of cold-rolling strip thickness. To implement high precision control of cold-rolling strip thickness,we optimize the deformation resistance model parameters and friction coefficient model parameters to improve the calculation precision of cold-rolling force model,and use exponential smoothing self-learn algorithm to ensure the stability of rolling force accuracy. In Shougang Qiangang 20-high Sendzimir mill single stand production ... 
2014-05-28 166 5.8

一种提高有效氮和底层质量的高磁感取向硅钢制造方法:冶炼后连铸成坯;对铸坯加热;热轧、常化及酸洗后时效冷轧;在湿式气氛下脱碳退火;在湿式混合气氛下均热;在湿式混合气氛下渗氮退火;进行后工序。本发明与现有技术相比,通过合理控制渗氮过程,提高渗氮后钢板基体内氮含量与总氮量之间的比例达到80%以上,使无点状露晶产生,最终获得产品的底层质量优异。
2021-01-29 147 6.8

本发明公开了一种低牌号无取向电工钢的制造方法,包括:在炼钢时,增加所述低牌号无取向电工钢的板坯的铝元素含量,增加量按重量百分比计为0.08%~0.12%;在热轧板坯加热时,控制所述板坯的出炉温度为1150℃~1200℃;在热轧粗轧时,控制所述板坯的粗轧RT2温度为1000~1050℃;上述方法通过提高铝含量,以升高低牌号无取向电工钢的相转变温度,再结合板坯的出炉温度控制和粗轧RT2温度控制,保证低牌号无取向电工钢在精轧过程中不会因为相变区轧制而产生轧制力波动,从而稳定精轧轧制过程,提高精轧后低牌号无取向电工钢板卷的尺寸和板型精度。
2021-07-08 167 6.8

介绍了硅钢CSP工程辊底式均热炉的技术特性,详细阐述了辊底式均热炉工艺特点。根据硅钢均热要求,通过采取不同烧嘴布置方法和燃烧控制技术,选用耐火纤维模块和绝热材料等相关技术措施,满足了出钢温度要求。 The technical specialty for roller hearth furnace of silicon steel CSP Plant was introduced,and the technology characteristics of the roller hearth furnace were illuminated in detail.According to the reheating require of the silicon steel,different burner arrangement and combustion control methods were applied,and technology measures such as selecting refractory fiber module and insulation material and so on were taken,the temperature requirement of silicon steel was met. 
2011-06-28 140 5.8

试验2.3Si无取向硅钢(/%:0.003C,2.30Si,0.16Mn,≤0.020P,≤0.005S,0.54Al)冷轧板由常化和未常化的2.5 mm热轧板冷轧至0.6 mm(压下率76%),经750~950℃2.5 min中间退火后再冷轧至0.5 mm(压下率16.7%),成品板经890℃+960℃2.5 min退火。研究了中间退火温度对该钢晶粒尺寸、织构和磁性能的影响。结果表明,随中间退火温度的升高,二次冷轧前晶粒和成品晶粒增大,成品中不利织构组分{111}和{112}减弱,磁性能得到改善。热轧板经过常化时的磁性能明显好于未经常化时的磁性能,但中间退火温度较高时常化对磁性能的有利作用减弱。 The test cold sheet of 2.3Si non-oriented silicon steel(/%:0.003C,2.30Si,0.16Mn,≤0.020P,≤0.005S,0.54Al) is first cold-rolled from normalized and un-normalizing 2.5 mm hot-rolled plate to 0.6 mm sheet(reduction 76%),then intermediate annealed at 750~950℃ for 2.5 min and double cold-rolled to 0.5 mm sheet(reduction16.7%),the finished sheet annealed at 890℃+960℃ for 2.5 min.Effect of the intermediate annealing temperature on grain size,texture and magnetic performance of the steel has been studied.... 
2014-02-28 181 5.8

本发明涉及一种基于全流程数据的冷轧硅钢厚度控制方法、装置,该方法包括:针对某个冷轧钢卷,首道次默认使用监控AGC,在进入冷轧机工序生产之前,获取其前序全流程的生产工艺和质量数据,并进行预鉴定,若发现硅钢性能波动,则首道次额外再使用秒流量AGC;若发现硅钢厚度波动不剧烈,则首道次额外再使用前馈AGC。本发明无需人工干涉,采用上述规则在生产前就能自动确定最优的AGC生产模式,保证了硅钢产品厚度精度,避免硅钢厚度指标上的缺陷。
2021-10-26 202 6.8

实验室模拟薄板坯连铸连轧(TSCR)流程制造高磁感取向硅钢,借助电子背散射衍射(EBSD)技术对不同Sn含量的热轧板织构进行了研究。研究结果表明:不同Sn含量热轧板表层及次表层均为高斯织构、铜型织构及黄铜织构的混合织构,中心层为{100}面织构;Sn含量为0.1%时,热轧板表层及次表层高斯织构组分最多,取向密度最大,成品磁感最高,达到1.875 T。 Texture of grain oriented silicon steel hot rolled by thin slab casting and rolling process(TSCR) in laboratory with different Sn contents was analyzed by electron back-scattered diffraction(EBSD).The results show that the hot rolled slabs with different Sn contents have the same texture,i.e.,Goss,Copper and Brass.Specifically,the texture of core layer is {100};While the hot rolled slab with 0.10% Sn,the surface layer and subsurface layer have a sharpness Goss texture and the finished products h... 
2013-11-28 159 5.8

利用OM、EBSD等手段研究了热轧板两段式正火时在700℃保温不同时间(0、10、30、60 min)对含Sb冷轧无取向电工钢磁性能的影响。结果表明,700℃保温10 min处理的样品铁损最小,磁感最高。对成品板的组织分析结果表明,试样的晶粒尺寸随700℃保温时间的延长先增大后减小,保温10 min时晶粒尺寸达到最大;分析成品试样织构发现,有利织构组分随700℃保温时间的延长先增加后减少,保温10 min时有利织构组分所占百分比最高。因此,含Sb冷轧无取向电工钢两段式正火时在700℃保温10 min时磁性能最好。 Effect of two-stage normalization on magnetic property of non-oriented electrical steel containing antimony was investigated by using optical microscope(OM) and electron back-scattered diffraction technology(EBSD).The experimental results show that the iron loss and magnetic permeability of the specimen insulated at 700 ℃ for 10 min are lowest and highest respectively.The grain size of the finish specimens increases first and then decreases with the increase of holding time.Similarly,the advanta... 
2013-11-28 183 5.8

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