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本发明提供退火隔离剂的制备方法以及退火隔离剂和方向性电磁钢板。由该方法得到的退火隔离剂纯度高、分散性以及密接强度优异,可以在方向性电磁钢板表面形成均匀致密的镁橄榄石层。退火隔离剂的制备方法,其包括:工序(1):将氧化镁和铵盐溶液混合并反应,制备镁盐溶液和氨,然后使精制的镁盐溶液与氨反应而得到氢氧化镁;工序(2):将得到的氢氧化镁的一部分在155~230℃下高温熟化,并且将得到的氢氧化镁的另一部分在10~100℃下低温熟化;工序(3):将在上述各条件下熟化的氢氧化镁混合、烧成,得到氧化镁用于退火隔离剂。
2021-06-18 140 6.8

利用FE-SEM、EDS分析了含不同抑制剂成分的成品取向硅钢中夹杂物的组成和形貌,统计其尺寸及数量分布;结合对磁性能测试的结果,分析了Sn、Cu、Nb和Cr对取向硅钢磁性能影响的机理。结果表明:含Sn的取向硅钢试样中夹杂物主要为块状的微米级Al-Ti-C-N-O复合物,还有少量的球形Al-N-O颗粒和块状Ti-C-N-O颗粒,棒状夹杂物较少;含Cr的取向硅钢试样中夹杂物主要为球形的微米级Al2O3,还有少量Cu-Al-N-O-S复合物,棒状夹杂物和不规则夹杂物均较少;含Cr试样中1~3μm夹杂物的平均尺寸较含Sn试样小,但数量多,而大于3μm夹杂物的平均尺寸较含Sn试样大,但数量很少。磁性能测试结果表明,外场为800A/m和2500A/m时,含Cr试样磁感应强度偏低,铁损值P1.7/50较含Sn试样高,为1.171W/kg。 The composition and morphology of inclusions in the finished grain-oriented silicon steels are analyzed by using FE-SEM and EDS, and the number density and size distribution of the inclusions are counted. The influence mechanism of Sn, Cu, Nb, and Cr on the magnetic properties of the steel is also discussed. Results show that the inclusions composition in the grain-oriented silicon steel samples containing Sn is mainly block Al-Ti-C-N-O, compounding with a few spherical Al-N-O and block Ti-C-N-O... 
2014-05-28 162 5.8

本实用新型公开了一种硅钢炉用保护气的循环系统,包括与硅钢炉群排气管相连通的氢气提纯净化单元、与氢气提纯净化单元相连的氮氢配比单元以及与氮氢配比单元相连的用于对氮氢混合气中加入水蒸气的加湿单元;所述加湿单元与硅钢炉群的进气管相连通。本实用新型便于对尾气中的氢气回收再利用,可节省资源。本实用新型适用于硅钢退火炉等设备中,用于实现氢气的循环再利用。
2021-06-21 137 6.8

本实用新型公开了一种高磁感低铁损取向硅钢加工用预热装置,包括加工台和预热箱,所述预热箱固定连接在加工台上端中间位置,所述加工台上端且位于预热箱内开设有一个驱动槽,所述驱动槽内转动连接有一组驱动转轴,所述驱动转轴上均固定连接有一个驱动辊,所述预热箱内滑动连接有一个升降板,所述升降板上且与驱动辊相对应位置均开设有一个安装槽,所述安装槽内均转动连接有一个加热转辊,本实用新型的有益效果是:通过驱动辊的转动,可以使金属板位于预热箱内滑动,并且通过加热转辊与金属板表面加热,实现对金属板的预热,利用加热转辊与金属板直接接触,使热传递更加迅速,从而缩短了预热时间。
2021-12-22 191 6.8

研究了薄板坯连铸连轧流程(TSCR)条件下热轧工艺对3.2%Si-0.7%Al无取向硅钢组织、织构演变及磁性能的影响规律。结果表明,提高均热温度和热轧温度有助于获得粗大的变形组织和强烈的{001}〈110〉织构,进而对后续的组织、织构演变进程及磁性能产生有利的遗传影响。与低温均热和低温热轧相比,高温均热和高温热轧得到的最终成品板的再结晶晶粒较粗大,λ纤维再结晶织构较强而γ纤维再结晶织构较弱,磁感应强度较高。 It was investigated that the effects of thin slab cast rolling(TSCR) hot rolling processes on microstructural,textural evolution and magnetic properties of 3.2%Si-0.7%Al non-oriented silicon steel.The results show that much larger hot rolling deformed microstructure and much stronger {001}〈110〉 texture could be obtained by increasing the soaking and hot rolling temperatures,which had good heritable effects on subsequent microstructural,textural evolution and magnetic properties.The final sheets ... 
2023-05-09 193 5.8

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... 
2013-04-28 156 5.8

本发明涉及取向硅钢技术领域,且公开了一种气耗优化成本较低的取向硅钢高温退火工艺,包括如下步骤:S1、将铸坯装炉装炉前先对炉台利用高压空气进行清扫,将通气管内的粉尘或其它杂质吹扫干净,然后根据钢卷的卷径大小选用与之匹配的料盘和料筐,将铸坯放入炉内;S2、炉台密封将装有铸坯的炉台完全密封。该种气耗优化成本较低的取向硅钢高温退火工艺,在高保温阶段使用氨分解气,而氨分解气相对氢气而言比较稳定,在生产成本上也较氢气低,大大的降低了成本节约了能耗,在低保温阶段是为了消除应力,形成一次再结晶晶粒,进行脱碳,高保温阶段二次再结晶,净化钢质和形成烧结硅酸镁底层,最后退火完成后,完成烧结绝缘涂层、热拉伸平整。
2020-12-14 160 6.8

本实用新型公开了一种镀铝锌硅钢板平整装置,包括辊轮整形装置与曲面压平装置,所述辊轮整形装置包括第二底板,所述第二底板的上表面固定连接有两个驱动电机,所述驱动电机的输出端固定连接有第二推杆,所述第二推杆的输出端固定连接有滑动块,所述滑动块的左侧壁转动连接有转杆,所述转杆的中部固定连接有辊轮;所述曲面压平装置包括第一底板、顶板,所述第一底板与顶板之间固定连接有四根导柱,所述导柱的中部滑动连接有上模座,所述上模座的下表面可拆卸连接有上模具,所述第一底板的上表面固定连接有下模座,所述下模座的上表面可拆卸连接有下模具。本实用新型中,辊轮整形机与曲面压平机结合能够有效地提高钢板的压平后的平整度。
2020-12-30 161 6.8

西安重型机械研究所为武钢开发了目前国内第一台自动化水平较高的先进可靠的硅钢热轧试验轧机。本文介绍了该轧机的工艺参数、设备组成,技术特点及轧制流程,该轧机在规定的终轧温度范围内,实现了2.5 m/s的快速轧制速度,保证了控制系统准确及时的采集到轧件进出轧辊时的信号,缩短道次间隙时间,实现了自动控制,保证了产品板形及精度的高水平要求,对于硅钢尤其是对其取向硅钢新产品、新工艺的开发具有深远意义。 An experimental prototype of 400 mm silicon steel hot rolling mill was developed by Xi’an Heavy Machinery Research Institue for Wu Gang.The technological parameters,configuration and characteristic of advanced control system in the experimental prototype are introduced in detail.The experimental prototype was realized the fast rolling of 2.5 m/s in the range of specified rolling temperature.Its automatic rolling control system can acquisite the signals that a rolled piece enters in and exits fro... 
2011-04-28 158 5.8

为了确保硅钢铬酸盐涂料的环保性,需要严格控制涂料的固化工艺,保证涂料固化过程中涂料中的六价铬充分转化为三价铬。对涂料及原料进行热重分析(TG)及差示扫描量热法分析(DSC)。结果表明,MgO与铬酐混合转化为MgCrO4,使六价铬稳定性增强,其中大部分Cr6+转变为Cr3+发生在620~700℃,在450~500℃高于铬酐发生大量失重,因此必须加入还原剂保证涂料中六价铬被充分还原;超过360℃后树脂会发生分解,因此实际板温不能超过360℃;加入了还原剂的整体涂料的失重温度区间主要在260~320℃,因此涂料固化时钢板的实际温度最佳区间为320~360℃。 Because of the silicon steel chromate coating’s environmental requirements,the paint curing process must be controlled strictly to ensure all Cr( Ⅵ) transforms to Cr( Ⅲ). The TG and DSC analyses of the paint are studied. The reaction of MgO and CrO3 would generate MgCrO4,enhancing the stability of Cr( Ⅵ). The most r( Ⅵ) in MgCrO4 changes to Cr( Ⅲ) at 620-700 ℃,while the CrO3 has a large weight loss at 450-500 ℃. The reductant must be added in the paint to make sure the Cr( Ⅵ) could transform suf... 
2014-09-28 151 5.8

研究了CSP工艺生产≤0.005%C-1.1%Si的2.2mm无取向电工钢热轧板在800~1000℃常化对0.5mm冷轧板840℃退火后组织和磁性能的影响。结果表明,热轧板常化温度升高,冷轧板退火后的再结晶晶粒增大,铁损降低,磁感增加;热轧板常化温度超过900℃,因第二相固溶而后弥散析出,退火后冷轧晶粒细化,铁损增加,因此该无取向电工钢热轧板最佳常化温度为900℃。 The effect of normalizing at 800-1000℃ of CSP produced plate(≤0.005%C-1.1%Si) on the microstructure and magnetic properties of downstream cold-rolled non-oriented electrical steel annealed at 840℃ was studied.Results show that with increasing normalizing temperature of hot-rolled material the recrystallized grain size of annealed sheet increases,iron loss reduced and magnetic induction increases.As normalizing temperature excesses 900℃,grain is refined and iron loss increases after annealing due... 
2012-03-28 130 5.8

针对硅钢连续退火机组的主要能源介质消耗现状,对现有生产工艺和设备研究采取机组循环用水、增加清洗段漂洗级数等措施可节约大概27 m3/h的过滤水量,并可减少78%的弱碱处理量;将炉子烟气换热系统增加一级余热回收,每年回收的余热相当于583 t标煤消耗,可节约蒸汽5 368 t。 The present situation of energy consumption for silicon steel annealing line is analyzed in this paper.In existing process and equipment conditions,increasing the number of cleaning series will lead to a saving of about 27 m3/h of filter water and reduce 78 % of weak base processing volume.For the flue gas heat-exchange system,adding a waste heat recovery device will recover waste heat equivalent to 583 tons of standard coal per year,corresponding to a saving of steam 5 368 t per year. 
2011-05-28 147 5.8

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