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通过对激光粒度分析仪测量硅钢级氧化镁(MgO)的分析条件进行优化,如分散介质、分散方式、样品预处理、仪器暗淡度等,探讨了硅钢级MgO粒度范围测量重现性较好的试验方法,满足硅钢生产过程控制对MgO粒度的要求。 The analysis condition of the laser particle size analyzer on grain oriented silicon-steel grade magnesium oxide is optimized,including the dispersion medium,dispersion methods,sample preparation,and instrument obscuration,etc.Therefore,particle size measurement with good reproducibility for silicon-steel magnesium oxide is discussed,which may meet the requirement of MgO particle size for silicon-steel process control. 
2011-02-28 185 5.8

本实用新型公开了一种取向硅钢加工用的热处理工业炉,包括工业炉主体,所述工业炉主体内部两侧表面开设有聚热槽,所述聚热槽内部活动安装有加热管,所述工业炉主体内部接近上表面处活动安装有排气扇,所述工业炉主体内部两侧表面接近上表面固定安装有引流板,所述加热管下端活动安装有压帽,所述压帽上表面固定嵌入安装有导电块,所述工业炉主体前端和后端均活动安装有密封门。本实用新型所述的一种取向硅钢加工用的热处理工业炉,能够使热处理工业炉内侧表面的加热管便于拆卸维修,且改变热处理工业炉内部的气流流动路径,避免气流被硅钢阻挡吹向两侧的加热管,以免气流紊乱,使气流和热能形成一个循环,使加热管的热量能快速的导入硅钢。
2021-11-18 128 6.8

将Fe-1.5Si硅钢试样分别在1 000~1 200℃空气条件下氧化30 min,观察发现在1 000℃和1 100℃时,氧化层与基体界面处存在硅酸亚铁,而当温度为1 200℃时,硅酸亚铁不但存在于界面处,同时也存在于氧化层中.将各温度下得到的带有氧化层的试样进行单道次热轧试验,压下率分别为10%和30%,发现1 000℃和1 100℃时,较高的压下率使氧化层破碎更加严重,但是单道次热轧未能改变氧化层的结构;当温度为1 200℃时,由于液态的硅酸亚铁的出现,单道次热轧能够将界面处的液化的硅酸亚铁层挤压到氧化层中,消除了硅酸亚铁层的钉扎基体的效应,改善了氧化层与基体界面的平直度. Specimens of Fe-1.5Si silicon steel were oxidized at 1 000 ~ 1 200 ℃ in air for 30 min.At 1 000 ℃ and 1 100 ℃ fayalite was observed at the scale/substrate interface.While at 1 200 ℃fayalite was found both at the scale/substrate interface and at the outer oxide layer.Then after the single-pass hot rolling process,with the compression ratio of 10% and 30%,it was found that at 1000 ℃ and 1 100 ℃,higher compression rate accelerated the broken of the scale layers,but the scale structure was not affec... 
2013-12-28 167 5.8

本发明公开了一种低损耗宽料取向硅钢的生产方法。本发明所述生产方法是通过在罩式炉的内罩中增加带有通气孔的聚气罩及与聚气罩配合的炉底板,配合工艺优化,控制原料化学成分,使气体和钢卷之间的浓度更均匀,反应更充分,气流流动方向更易控制,所制备的取向硅钢性能稳定,磁性能优良,且铁损达到1.12W/KG以下的比例提高至98.77%,平均铁损达到1.06W/KG以内,使取向硅钢卷的铁损大幅度降低,电磁性能更好。
2021-10-26 173 6.8

本实用新型公开了硅钢专用消泡剂生产温度控制装置,包括底板及设置在底板上端的温控桶,所述温控桶的内部设置有温控腔,所述温控桶的上下两端分别安装有进料口及出料口,所述温控桶的内部设置有便于温度控制的温度控制机构,所述底板上设置有用于搅拌的搅拌机构;所述温度控制机构包括安装在温控桶上的进气管及出气管,所述进气管及出气管与温控腔的内部相通设置。本实用新型的硅钢专用消泡剂生产温度控制装置,整个温控处理操作简单、实施便捷,便于对消泡剂进行温度控制,且冷却介质或者加热介质可以直接对消泡剂进行加热或是降温,降低了输送过程中的能量消耗,提高了消泡剂温度控制的效率。
2021-12-20 156 6.8

研究了采用高温卷取热轧态原料和常化态原料生产高牌号冷轧无取向电工钢组织、织构和磁性能。研究发现钢卷采用750℃高温卷取,下线后立即采用\"保温罩\"对钢卷进行保温,时间96h,然后空冷至100℃时上线生产的工艺可取代常化工艺生产高牌号冷轧无取向电工钢。冷轧上线前,热轧态原料的表层为大量的再结晶组织,这部分组织包括了热轧轧制时保留下来的动态再结晶组织,钢卷本身高温回复后产生再结晶晶粒,以及在保温罩内保温时形成的再结晶组织。高温卷取的热轧态和常化态的热轧卷作为原料时,试样织构类型相似,取向分布密度接近,再结晶后织构类型仍然相似,取向分布密度仍然接近。Goss织构对磁性能增加有促进作用。实验钢中较好的磁性能对应的织构[{100}+Goss]/{111}的比值较高,体现了织构的遗传性。 Microstructure,texture and magnetic properties of high grade cold rolled nonoriented electrical steel which made of hot rolled material with high temperature coiling and with normalization were studied.Steels coiled in high temperature(at 750 ℃),stacked with insulation cover for 96hand air cooled to 100 ℃ were using to manufacture high grade nonoriented electrical steel.The process can replace the normalization process.There are a lot of recrystallized grains in the surface layer of the coil wit... 
2014-03-28 153 5.8

【作者】 欧阳帆; 肖侃; ...
2023-05-09 221 5.8

连续酸洗退火机组(CPAL)对于当前生产高磁感取向硅钢和高牌号无取向硅钢是必不可少的一个环节。常化炉是常化酸洗机组关键的组成部分。本文对国内自主建造的两条退火酸洗机组的工艺流程,特别是常化炉段进行了对比分析。总结出了常化炉的工艺及组成特点,对生产过程中暴露的问题进行了仔细的分析并提出了改进的意见,对于以后新建常化炉具有一定的提示作用。 The continous pickling annealing line(CPAL) is an essential step in producing high magnetic induction grain-oriented silicon steel and high grade non-oriented silicon steel.The normalizing furnace is a very important part of the CAPL.In this paper,the process flows of two CAPL with independent manufacture in our country have been compared,especially the part of normalizing furnaces.The characteristics of process and component are summarized and problems of the normalizing furnace during the prod... 
2013-03-28 139 5.8

本发明是关于一种薄规格无取向硅钢35BW440,该无取向硅钢35BW440包括以下质量百分比的元素:C:≤0.003%,Si:0.8%‑2.0%,Mn:0.4%‑1.2%,P:≤0.015%,S:≤0.003%,Als:0.25%‑0.6%,N:≤0.003%,Sb:0.04%‑0.1%,O:≤0.0025%,其余为Fe及不可避免的杂质。在没有电磁搅拌设备增加无取向硅钢磁感应强度的前提下,通过加入Sb元素,增加对电磁性能有利的{110}和{100}织构组分,提高电磁性能,采用二次冷轧及中间连续退火的工艺,提高无取向硅钢的表面质量。
2021-04-19 157 6.8

冷轧中中低牌号的无取向硅钢多采用万能凸度轧机(Universal crown mill,UCM)生产,其板形好坏受制于UCM轧机板形调节手段的协调使用。为掌握UCM轧机的板形控制特点,建立基于二维变厚度有限元的辊系弹性变形和基于三维差分的轧件塑性变形的六辊轧机耦合模型,对UCM轧机的板形调控性能进行详尽的分析,包括工作辊和中间辊弯辊、中间辊窜辊的调控功效、辊间接触压力分布等。在此基础上,提出可用指导生产的板形控制策略,指出UCM轧机在横向厚差控制方面的不足。针对工业生产中UCM轧机轧制无取向硅钢横向厚差大的问题,在大量仿真计算的基础上,开发具有高次曲线函数的边部变凸度(Edge variable crown,EVC)的工作辊。采用该工作辊后,各种品种的无取向硅钢的横向厚差不大于10μm的百分比由24%提高到99%,横向厚差的均值小于6μm,远小于之前的13μm。 Medium-low grade non-oriented silicon steel is rolled often by universal crown mill(UCM) during cold rolling.Its shape quality is dependent on the coordinated control of several shape adjustment devices of UCM.In order to understand the shape control characteristics of UCM,coupling model of six-high rolling mill,based on two-dimensional varying thickness finite element rolls elastic deformation model and three-dimensional finite difference strip plastic deformation model,is setup for the detaile... 
2011-10-28 158 5.8

通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响。对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响。结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加。退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少。 The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual st... 
2023-04-28 214 5.8

【作者】 姚昌国; ...
2011-05-28 151 5.8

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