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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 74 5.8

本发明公开了一种取向硅钢产品的在线性能判级与精确分切装置和方法,使得同一个分卷上的性能分布均匀,避免分卷出现性能废品或多个性能等级的情况,提高分卷性能稳定性。提供的一种取向硅钢产品的在线性能判级与精准分切方法包括生产数据采集、铁损曲线自学习、数据存储、性能在线判级、缺陷数据采集、缺陷判级、智能分切等模块,依据修正后的磁性能全长数据,得到产品的性能判级结果,结合表面缺陷判级结果,综合确定分切位置,制定最佳分切方案。本发明可以实现取向硅钢生产过程中的性能在线判级和精准分切,得到性能均匀、表面质量好的分卷,减少分卷性能不稳定带来的损失。
2021-08-16 74 6.8

一种使铋收得率不低于70%的含铋取向硅钢冶炼方法,其步骤:常规转炉冶炼并出钢至钢包中;RH精炼处理,其间:控制渣层厚度不低于45mm,且渣成分在:Al2O3:25~35wt%,CaO:40~50wt%,MgO:10~15wt%,且结束时钢水温度控制在1530~1590℃;真空精炼结束后进行镇静;后将铋颗粒与石灰石颗粒混装容器加入钢水中;保护浇注和后工序生产。本发明将铋颗粒与石灰石颗粒混合加入,石灰石在钢液中分解产生的气体不仅可以减缓铋颗粒下沉速度,使铋能够快速扩散均匀,更主要的是还可以强化铋颗粒在钢液中的扩散,最终可获得铋收得率高于70%即在71~75%的理想效果。
2020-12-22 73 6.8

本实用新型涉及一种取向硅钢氧化镁线涂层装置,尤其涉及一种取向硅钢氧化镁涂层线用冷涂辊,具有涂层辊本体及包覆在涂层辊本体外层的橡胶涂层;涂层辊本体内部为空腔结构,空腔结构内通有循环冷冻液。本实用新型涂层辊内部设计成空腔结构,并通过循环冷冻液对涂层辊进行冷却降温,既可以达到通过涂层辊对氧化镁进行降温的目的,从而满足工艺要求,防止质量缺陷的产生,还可延缓涂层辊因反复摩擦生热造成橡胶层老化,从而延缓涂层辊使用寿命。
2021-12-18 73 6.8

某厂对电工钢的轧制策略进行了优化,粗轧道次由“1+5”改为“1+3”。在优化后的生产过程中,每次变换钢种,烫辊材就会出现窄尺现象,而紧随其后的电工钢板则出现超宽现象。文中针对该问题,介绍了宽度设定模型和宽度自适应模型的原理,阐述了该问题出现的原因及解决方案,并通过对宽度自适应模型的应用研究及优化攻关,有效地解决了问题,大幅提升了实物质量,降低了宽度封锁率。 The rolling strategy of electrical steel was optimized in a factory,and the rough rolling pass was changed from “1+5”to“1+3”.Subsequently,the following problems were occurred in the production process:when the steel grade changed,the roasting roller steel before the electrical steel appeared the narrow width phenomenon,and then the electrical steel appeared the ultra-wide phenomenon.This paper introduced the principle of width setting model and width adaptive model,and expounded the causes and s... 
2022-02-28 73 5.8

本实用新型涉及变压器铁芯加工的技术领域,特别是涉及一种变压器铁芯加工用硅钢片裁剪装置,其可提高下料的便利性,同时提升工作效率;包括操作台、集料板、气缸、底架、两组立板、电机、从动轴、传送带、缓冲座、两组高弹簧和两组低弹簧,操作台底端设有四组支腿,操作台顶端设有送料组件和裁剪机,操作台上设有下料口,集料板转动安装在下料口内,气缸顶端和操作台底端固定连接,集料板底端滑动设有铰接座,气缸的输出端和铰接座铰接,立板通过两组立板固定安装在操作台底端,电机固定安装在底架前端,电机的输出端设有主动轴,主动轴转动安装在底架内,从动轴转动安装在底架内,主动轴和从动轴之间通过传送带传动连接。
2021-12-15 73 6.8

借助OM、激光共聚焦显微镜、质谱仪和电解萃取等设备和方法,研究了添加微量稀土La(质量分数0.001 1%)的取向硅钢在轧制前采用不同加热保温时间对抑制剂固溶行为的影响。结果表明:当稀土取向硅钢在1 250℃分别保温10、20、30 min后,试验钢晶粒尺寸随保温时间延长有先快后慢的长大趋势;三种抑制剂元素Mn、Cu和Al均发生固溶,保温时间对Mn和Cu两种元素的固溶影响明显,固溶量分别由69.8%和43.7%增加至84.2%和85.2%;随着保温时间的延长,稀土取向硅钢中抑制剂的小尺寸未溶物逐渐减少直至消失,较大尺寸未溶物(300~600 nm)逐渐转变为小尺寸未溶物逐步溶入基体中,数量减少且未溶物的类型由复杂逐渐转变为单一。 In this paper the solid solution behavior of the inhibitor under various holding time in 0.001 1 %La oriented silicon steel during reheating had been investigated by using OM, LM, methods of electrolytic extraction and mass spectrometer. The results showed that grain size of the test steel increased significantly with the holding time prolonging when the rare earth oriented silicon steel was heated to1 250 ℃ and held for 10, 20 min and 30 min respectively, and the growth trend slowed down after ... 
2022-02-28 73 5.8

无取向硅钢的磁性能主要取决于铁素体的晶粒尺寸、晶体织构和钢中的夹杂物。通过合适的化学成分设计以及采用适宜的夹杂物控制技术,可以获得最佳的夹杂物控制效果,使其纯净度大幅度提高或者无害,最终获得磁性能优良的高级别无取向硅钢。同时,为满足节能、环保、高效需求,无取向硅钢正朝着节能降耗、环境友好以及多功能、高效率、易加工等方向发展。 The magnetic properties of non-oriented silicon steel mainly depend on the grain size of ferrite,the crystallographic texture,and the inclusions in the steel.The optimum inclusion control effects can be obtained through a suitable chemical composition design and an appropriate inclusion control technique,and then the liquid steel will get be clean or the inclusion will get be harmless,finally the excellent magnetic property of the non-oriented silicon steel can be obtained.Meanwhile,in order to ... 
2013-03-28 73 5.8

对西昌钢钒炼钢厂200 t BOF(顶底复吹)-RH-CC工艺生产50PRW800无取向硅钢RH精炼过程中主要成份进行了分析。找出了目前工艺中影响钢液质量的主要因素是钢水脱氧处理不彻底,造成加入的部分硅元素烧损。操作工艺改为铝的脱氧即合金化操作一步完成,保证了钢水中氧处于一个较低的范围,从而减少对硅元素的烧损,提高合金收得率。 The factors of BOF-RH-CC process affecting the compositions of liquid steel were systematically investigated and studied of Xichang Steel and Vanadium Company. The main factors affecting the steel cleanliness were picked out. All results showed that the loss of silicon elements resulting from the deoxidization of liquid steel was not completely. It was suggested that the addition of aluminum for deoxidizing and alloying of molten steel was executed as one step in order to lower the oxygen potent... 
2014-03-28 73 5.8

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. 
2011-02-28 73 5.8

本发明公开了一种改善高牌号无取向硅钢表面色差缺陷的方法,属于冷轧卷板表面质量改进技术领域。所述方法为:将连铸坯依次进行热轧、常化、酸洗、单机架轧制和连续退火工序,其中按重量百分数计,所述的连铸坯含有如下成分:C<0.003%、Si1.6~2.0%、Mn0.35~0.65%、Al0.35~0.65%、P<0.02%、S<0.0025%、余量为Fe和其他不可避免的杂质元素,所有成分合计100%;其中热轧工序的卷取温度为620~640℃。本发明所述方法能够降低带钢表面氧化铁厚度并改变带钢表面氧化铁结构,改善高牌号无取向硅钢表面色差缺陷。
2021-03-25 73 6.8

根据本发明的一个实施例的取向电工钢板用退火隔离剂组合物,其包含复合金属氧化物,复合金属氧化物包含Mg和金属M,金属M是Be、Ca、Ba、Sr、Sn、Mn、Fe、Co、Ni、Cu和Zn中的一种以上。
2020-12-17 73 6.8

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