共查询到18条相似文献,搜索用时 62 毫秒
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采用透射电镜及能谱分析等方法,研究了高磁感取向硅钢中微观结构与析出抑制剂质点的形态,证实铸坯经1300C与1360-1380C加热轧制后硫化物的析出区域和析出数量未产生差异,但1300C加热时,常化后AlN的析出更弥散,其析出民硫化物的情况类似。另外,还观察到AlN的析出存在着一定的惯习面,有(100)。(110)、9120)和(121)四种类型,形貌上AlN呈现平行条束状分布。从而证实AlN在亚 相似文献
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浅谈氮元素在高磁感取向硅钢生产中的作用 总被引:1,自引:0,他引:1
介绍在以AlN为主要抑制剂的高磁感取向硅钢生产过程中氮元素的作用,以及其在各工序中的形态对二次再结晶和最终成品磁性能的影响。 相似文献
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综述了国外高磁感取向硅钢生产的重要性,展示了日本新日铁、韩国浦项、德国蒂森0.23mm 高磁感取向硅钢生产技术。 相似文献
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为了生产高磁感取向硅钢板用板坯,钢中添加Bi:0.0005%~0.05%,加入时,在中间包的外侧的钢水池中形成上围堰,并且用被覆了铁的圆桶,桶内装入Bi或Bi的合金加入到钢水中,钢水流量除以喷嘴内面积求出浸渍喷嘴内的钢水流量密度Q(≥0.9t/(m^2·s^-1)),为了使结晶内液面形成旋流,采用电磁搅拌,其推力F要满足关系式(3.000≤F≤10.000Pa·m^-1)。 相似文献
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综述了国外高磁感取向硅钢生产的重要性,展示了日本新日铁、韩国浦项、德国蒂森0.23mm高磁感取向硅钢生产技术。 相似文献
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铸坯加热温度和Mo对高磁感取向硅钢第二相析出形态的影响 总被引:1,自引:1,他引:0
采用透射电镜观察了铸坯加热测试和Mo对高磁感取向硅钢(Hi-B钢)析出第二相质点(硫化物+AlN)的影响,证实上述两个因素对AlN析出形态有很大影响,而对硫化物析出形态影响较小。铸坯加热温度降低和加钼使AlN析出更加细小,弥散,因此,含钼Hi-B钢的铸坯采用较低温度(1310℃)加热,对于提高第二相质点抑制初次晶粒长大的能力是有利的。 相似文献
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�ս��� ������ ����������ʥ�ң���Ԩ�� 《钢铁研究学报》2014,26(10):35-39
The precipitation behavior of MnS and AlN in low-temperature high magnetic induction grain-oriented silicon steel produced by thin slab casting and rolling process with ??acquired inhibitor method?? during continuous casting and soaking was studied by thermodynamic calculation. The calculated results show that AlN is likely to precipitate in ferrite after solidification. However, MnS can precipitate only in the two phase region of ferrite and austenite. Meanwhile, MnS and AlN in the steel can not be completely dissolved during the soaking stage. In addition, the abnormal growth of primary grain is not obvious after high-temperature nitriding, which indicates the number of inherent inhibitor in the steel is relatively sufficient before nitriding. 相似文献
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0.23mm厚度高磁感取向硅钢片生产中的技术改进 总被引:3,自引:0,他引:3
0.23mm厚度高磁感取向硅钢片生产中存在的问题有:板坯加热温度太高,热轧板偏厚,边裂太多,需要多次常化、冷轧,表面质量不稳定。采取的措施是:研制低温板坯加热用钢,在钢中添加Cr,减薄热轧板的厚度,调整热轧、冷轧工艺,在MgO中添加适宜的添加剂,优化酸洗工艺等。 相似文献
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The product quality of grain-oriented silicon steel may be affected by each process because of its complicated production technology. Morphologies, compositions and structures of forsterite film formed in different conditions on the samples subjected to high temperature annealing were measured by using a scanning electron microscope, an energy disperse spectroscope, an X-ray diffractometer and Fourier transform infrared technique respectively. The morphologies and influential factors of forsterite film were investigated. The results showed that the major component of forsterite film composed of light-gray spherical particles was Mg2SiO4, and the minor was MgAl2O4. If the amount of MgO coated on the surface of the steel was less, bare holes or even large-scale bare grains for forsterite film appeared. The higher temperature of water bath during decarburization annealing led to gaps of strips in forsterite film. Moreover, MgO coating method had great influence on forsterite film. Roller coating method was beneficial to increase compactness and smoothness of forsterite film, but was disadvantageous to its thickness. 相似文献
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新日铁取向硅钢热轧边裂及其防止方法 总被引:1,自引:0,他引:1
新日铁针对取向硅钢热轧板存在的边裂问题,采取了电磁搅拌、连铸板坯直送边部加热、实施板坯边部压下、电磁感应加热、控冷控轧、控制热轧精轧开始温度和终了温度、最终道次压下率及加热温度、控制组织、减少边部与中间的温度差异、消除狗骨等一系列措施,取得了明显效果。 相似文献
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川崎取向硅钢存在热轧板边裂问题。针对此问题,日本川崎公司采取了板坯在1200℃以上加热时控制保护气氛中氧的质量分数及保持时间;调整粗轧压下率及轧制温度;实施宽压下及边部加热;变化材料的变形能,抑制边部鱼鳞状缺陷的发生等一系列措施,取得了缓解热轧板边裂的明显效果。 相似文献