钢厂
真空感应炉熔炼高硅电工钢脱氧工艺的研究
在50Kg氧化镁坩埚真空感应炉上进行高硅电工钢的脱氧试验。结果表明,通过控制原料的成分、高真空下的碳氧反应和炉衬分解向钢液中的供氧,可使钢液的总氧含量≤15×10-6;在维持高温高真空条件下,当钢液中的反应达到一定程度后,延长精炼时间并不能降低钢液的总氧含量;完成精炼后加入硅钙合金沉淀脱氧可进一步降低钢液的总含氧量,但脱氧效果有限。 The test of high-silicon electric steel deoxidation has been carried out in 50Kg vacuum induction furnace with magnesium oxide crucible.Results show that the total oxygen could be ≤15×10-6in molten steel by controlling material components,carbon-oxygen reaction in high vacuum and oxygen contamination from crucible materials on molten steel;And when the reaction was carried through to a certain extent,total oxygen in molten steel could not be reduced by the extension of refining period in high va...
取向硅钢含铬无机绝缘涂层的研究进展
绝缘涂层可以有效提高硅钢片的耐蚀、耐腐、磁、绝缘等性能,因此取向硅钢涂装绝缘涂层是取向硅钢生产过程中重要的一环。本文对取向硅钢含铬无机绝缘涂层以及氮化铬涂层的性能优缺点进行了介绍,并对国内无机含铬取向硅钢绝缘涂层及氮化铬涂层的研究现状进行了综述。最后对未来含铬无机绝缘涂层的研发方向进行了展望。 Insulation coating can effectively improve the corrosion resistance of silicon steel sheet, such as corrosion, magnetic, insulation performance, thus oriented silicon steel insulation coating is the important part of oriented silicon steel production process. In this paper, the inorganic insulation coating oriented silicon steel containing chromium and chromium nitride coating performance advantages and disadvantages are introduced.In addition, the research status of insulation coating and chrom...
热轧辊冷却对冷轧无取向电工钢卷纵向磁性的影响及工艺优化
通过对35W300高牌号0.35 mm冷轧无取向电工钢卷(/%:0.002C、2.71Si、0.22Mn、0.015P、0.003S、0.0020N、0.55Als)头、中、尾组织、织构及对应的磁性能的试验研究,发现因热轧时12 MPa高压水连续冷却造成接触轧辊的钢卷头、中、尾在不同温度下轧制,卷取后钢卷头部处于卷心、温度略高而冷却速度略低于钢卷尾部,致使钢卷纵向组织、织构不同,成品卷头、尾各250 m内磁感逐渐增加,铁损逐渐降低,250 m外至钢卷中部磁性能稳定。通过将热轧辊的冷却方式改为周期冷却和卷取后的层流冷却改为钢卷70 m后开始冷却,至钢卷尾部70 m前停止冷却的方式使得钢卷纵向铁损差异明显减小,磁感差异略有改善。 According to the test research on structure and texture of head,meddle and end of 35W300 high grade 0.35 mm cold rolled non-oriented electrical steel strip coil(/%:0.002C,2.71Si,0.22Mn,0.015P,0.003S,0.002 0 N,0.55Als) and corresponding magnetic properties,It is found that due to 12 MPa high pressure water continuous cooling the roller in hot rolling process led to head,middle and tail of strip rolling at different temperature and after coiling the head of strip coil being in center of coil led t...
退火工艺对3.15%Si冷轧无取向硅钢组织和织构的影响
试验研究了退火温度(850~950℃)和时间(5~18 min)对2.3 mm热轧硅钢板(/%:0.036C,3.15Si,0.21Mn,0.005P,0.007S,0.032A1)6道次轧制的0.35 mm冷轧板组织和织构的影响。结果表明,退火温度越高,晶粒平均尺寸越大,900℃5 min退火时平均晶粒尺寸41.39μm,试样织构主要集中在γ取向线上的{111}<112>织构组分和{111}<110>织构组分;900℃18 min退火时平均晶粒尺寸为48.08μm,试样的{111}面织构和{112}面织构密度都明显减弱,{001}面织构增强,磁性能较优。 The effect of annealing temperature(850 ~950 ℃) and holding time(5 ~ 18 min) on structure and texture of 0.35 mm sheet by 6 passes cold-rolling from 2.3 mm hot-rolled plate of silicon steel(/%:0.036 C,3.15 Si,0.21 Mn,0.005 P,0.007 S,0.032A1) has been tested and studied.Results show that the higher the annealing temperature the coarser the average grain size;As annealing at 900 ℃ for 5 min the average grain size of steel sheet is 41.39 μm,and the texture in sample is mainly concentrated in y orie...
脉冲电场对取向硅钢磁性能及织构的影响
采用硅钢自动测量装置及X射线衍射仪检测出样品在实验前后的磁性能参数和织构强度.结果表明:较低的电压、9 Hz、较长的处理时间以及退火温度为650℃有利于增高铁损降低比例;较低的电压、较高的频率以及退火温度为650℃有利于增加磁感应强度增高比例.最佳的提高磁性能的实验参数是:频率为9 Hz,电压为500 V,处理时间为6 min,退火温度为650℃.通过织构分析可以验证:取向硅钢磁感应强度的变化取决于{110}<001>晶粒取向度值,而{110}<001>取向度值可看成是一个反映总体平均偏离角大小情况的综合值. An automatic measurement system for silicon steel and an X-ray diffraction meter were used for measuring the magnetic property parameters and texture of ex-processed samples and processed samples.It is shown that under the condition of a lower voltage,9Hz,a longer processed time and an annealing temperature of 650℃,the decrease rate of iron loss can be increased;a lower voltage,a higher frequency and an annealing temperature of 650℃ are in favor of improving the increase rate of magnetic inducti...
CN202120368631.4一种具有在线测量功能的电工钢片横剪线
本实用新型涉及一种具有在线测量功能的电工钢片横剪线,包括床身,床身上沿其长度方向安装有导轨,电工钢片在外部驱动辊带动下以导轨为导向移动;位于导轨一端端头外部的床身上安装有测量辊组件,位于导轨另一端处的床身上安装有影像测量组件;测量辊组件、导轨和影像测量组件的中心位于同一直线上,影像测量组件横跨设置于导轨上方;位于测量辊组件和影像测量组件之间的床身上依次安装有冲孔组件、V冲组件和斜剪组件;本实用新型通过测量辊组件对电工钢片行进长度进行检测,通过影像测量组件对电工钢片成型尺寸进行检测,从而便利于及时调整横剪线整体的运行状态,有效助力于保证合格率,并降低了人工负担。
CN202122845310.1一种用于硅钢片的焊接工装夹具
本实用新型公开了一种用于硅钢片的焊接工装夹具,它包括底座,所述底座包括底板(1)、固设于底板(1)顶表面上的左挡板(2)和右挡板(3),左挡板(2)与右挡板(3)之间固设有位于底板(1)上的挡条(4),挡条(4)的前端面上设置有止口(5),左挡板(2)的前端部铰接有压杆(6),所述底板(1)的顶表面上且位于其左侧放置有压条(7),底板(1)的顶表面上且位于其右侧固设有限位条(8),压条(7)与限位条(8)之间设置有多个紧靠于一起的定位块(9),每个定位块(9)均放置于底板(1)的顶表面上。本实用新型的有益效果是:结构紧凑、提高硅钢片组件焊接质量、提高硅钢片组件生产效率、操作简单。
取向硅钢中含铜抑制剂的固溶析出行为
含铜抑制剂作为取向硅钢的主抑制剂或辅助抑制剂不仅可以抑制初次晶粒的长大,促进二次再结晶,还可以降低铸坯的加热温度。取向硅钢中主要抑制剂为10~50 nm Cu2S,在钢的铸坯、热轧、冷轧、脱碳等工艺过程均可析出;(Cu,Mn)1.8S、Cu1.8S、ε-Cu等主要作为辅助抑制剂,尺寸一般为30~50 nm(或大于50 nm),主要在热轧阶段析出。总结了国内外有关取向硅钢中含铜抑制剂析出行为的研究进展,当前主要研究不同生产流程和工序中含铜抑制剂的析出行为和作用机理。 As main inhibitor or auxiliary inhibitor for grain-oriented silicon steel,the particles of inhibitor bearing copper not only inhibit the primary crystal growing and promote the secondary recrystallization,but also decrease the heat temperature of casting slab.The main inhibitor for grain-oriented silicon steel is 10~50 nm Cu2S,which precipitate in process and procedure including steel casting slab,hot rolling,cold rolling and decarburizing process,while the 30~50 nm or more than 50 nm...
CN202121056540.3一种新型嵌线结构的硅钢片组件
本实用新型公开了一种新型嵌线结构的硅钢片组件,包括硅钢片组和骨架,硅钢片组由若干相同形状的硅钢片堆叠而成,硅钢片为倒U型的薄片体,骨架由一限位框架和两固定杆组成,限位框架由一矩形框架和位于矩形框架四角的限位凸块组成,硅钢片组卡设在矩形框架上,限位凸块对硅钢片组进行限位,两固定杆平行设置在硅钢片组的上方,且固定杆的两末端分别与限位凸块相固定。本实用新型具有装配简单、不易变形的优点。
CN202111146383.X一种电磁屏蔽用1050铝/50W800无取向电工钢钢板生产方法
本发明提供一种电磁屏蔽用1050铝/50W800无取向电工钢钢板生产方法,包括S1)、将轧制好的铝卷和钢卷分别放置在两个开卷机上开卷;S2)、开卷后分别采用HCl、NaOH溶液清洗;S3)、用旋转钢丝刷法对铝板、钢板待结合面进行机械处理10‑15s;S4)、将铝板、钢板置于丙酮溶液中超声波清洗2‑3min;S5)、将表面处理后的铝板、钢板进行预拉伸或者预压缩,S6)、将预应力处理的铝板、钢板边部进行焊接;S7)、将焊接好的钢铝板进行轧前的预热处理;S8)、然后进行连续退火炉中进行退火处理,本发明将金属铝板、钢板通过热轧轧制复合化结合在一起,界面剪切强度≥100MPa,反复弯曲次数≥10次。
钙合金处理硅钢中的夹杂物及晶粒成长变化
采用RH精炼添加钙合金方式对硅钢进行钙处理,结果表明,钙合金添加量为0.67、1.00和1.67 kg/t钢时,钢中Ca含量分别为0、2×10-6和4×10-(6质量分数);随着钙合金添加量的增加,钢中夹杂物粒度逐渐由0~2μm向2~4μm、4~6μm偏移;不同钙处理条件下,钢中均存在粒径小于1μm和粒径为1~5μm的MnS、CuxS夹杂物,后者或单独存在,或与AlN、CaS夹杂复合;钢中粒径为5~10μm的夹杂物基本以Ca的氧化物和硫化物为主。与未经钙处理的炉次相比,钙合金添加量为0.67、1.00和1.67 kg/t钢时,粒径小于1.0μm的夹杂物减少幅度分别为68.06%、87.50%和94.94%。钙合金添加量为1.67 kg/t钢时,可以去除钢中绝大部分的微细夹杂物。 In order to improve the properties of final silicon steels,the calcium treatment was adopted by adding Ca alloys into the liquid steel during the RH refining process.Results show that when the addition of Ca alloys is 0.67 kg/t,1.00 kg/t and 1.67 kg/t,the corresponding Ca content in silicon steels is 0,2 × 10-6 and 4 × 10-6 respectively.With the increase of Ca alloy addition,the particle sizes of inclusions in steels become 2~4 μm and 4~6 μm,from 0~2 μm.Under different calcium treatments,there e...

