硅钢资料

目的提高硅钢的磁性能。方法采用多弧离子镀技术,在普通取向硅钢薄板两面沉积高硅FeSi合金层制得高硅梯度硅钢,并进行热处理,观察其显微组织,测量磁性能。结果退火态高硅梯度硅钢表面的高硅FeSi合金层与基底结合紧密,均匀致密。高硅梯度硅钢中硅含量呈梯度分布,最表层硅质量分数为11.0%,随着深度增加,硅含量逐渐降低,在距表面20μm处硅质量分数仍能达到6.5%。沉积态高硅梯度硅钢的电阻率ρ、低频铁损P10/50、高频铁损P10/1k及磁感应强度B8分别为68.6μΩ·cm,0.82W/kg,83.3 W/kg和1.73 T,退火后分别为63.1μΩ·cm,0.44 W/kg,54.38 W/kg和1.89 T。结论由于表层高硅FeSi合金层的存在,梯度高硅钢的低频磁学性能良好,但高频损耗需进一步改善。 Objective To improve the magnetic properties of silicon steel. Methods FeSi alloy coatings with high-silicon content were deposited on the surface of common grain-oriented silicon steel by cathodic arc plasma evaporation,and then a kind of high silicon gradient steel was prepared. The morphologies,content and magnetic properties of the samples were tested. Results FeSi alloy coatings were featured with compact microstructures and excellent adhesive quality with the substrates. The silicon conten... 

运用EBSD和光学显微镜,研究了0.25%~0.45%Cu对无取向电工钢热轧板显微组织,成品板显微组织、织构和磁性能的影响。实验结果表明:卷取过程中Cu元素在热轧板表层的偏聚作用显著阻碍了热轧板表层再结晶晶粒长大,导致热轧板表层晶粒尺寸随着Cu含量增加而逐渐较小,但热轧板中间晶粒尺寸变化不大。同时发现Cu元素能够明显改善织构类型,使有利织构组分增加,不利织构组分减少,同时减弱织构强度。从实验结果可知0.35%Cu能够显著改善电工钢的磁性能,铁损P15/50最低达到4.1 W/kg,磁感B50最高值达到1.8 T。 Effects of high content Cu on microstructure of hot rolled plates and microstructure,texture and magnetic properties of annealed finish product plates of non-oriented electrical steel were examined by means of EBSD technique and optical microscope. The results show that surface segregation of Cu significantly hindered recrystallized grain growth of surface layer in hot rolled plate during the coiling,as a result,the surface grain sizes of the hot-rohed plates decrease with the increase of Cu con... 

本实用新型公开了一种电工钢加工用绝缘喷涂装置，包括底板，所述底板顶部外壁的中央位置设有安装通孔，所述安装通孔的两侧内壁上均通过轴承连接有转杆，所述底板的一侧外壁上固定连接有第一电机，第一电机输出轴的一端连接有连接杆，连接杆的一端固定连接在一个转杆的一端，两个所述转杆的一端固定连接有同一个放置架，所述放置架的两侧内壁上均固定连接有两个伸缩杆，四个所述伸缩杆活塞杆的外壁上均设有复位弹簧。本实用新型第二电机可以驱动每一个空心管转动的过程中，空心管内的绝缘漆从管壁的喷孔喷洒而出，而空心管外的扇板则配合交错分布的喷孔将雾化喷洒的绝缘漆打乱喷洒在电工钢上，全面且充分的完成喷涂。

本发明揭示了一种超低铁损无取向硅钢及其生产方法，生产方法包括：依次采用铁水脱硫、转炉冶炼、RH炉精炼进行冶钢，最终所得钢水化学成分以质量百分比计为：C≤0.003％、Si：2.8～3.4％、Mn：0.1～0.5％、Al：0.6～1.3％、S≤0.0015％、N≤0.0020％、P≤0.03％、Ti≤0.003％、V≤0.003％、Nb≤0.003％，且同时满足3.80％≤Si+Al≤4.15％，其余为Fe以及不可避免的杂质；将冶炼所得钢水连铸成连铸坯；对连铸坯加热后经过多道次轧制得到热轧卷板；对热轧卷板的两侧边部进行剪切；常化酸洗，常化温度为900～930℃，常化时间为30～60s；经多道次冷轧成厚度为0.35～0.5mm的无取向硅钢，其中，第一道次冷轧时的压下率≥37％，轧制速率为70～180m/min。本发明制备的无取向硅钢具有超低铁损，而且冷轧时不易断带。

【作者】 胡志强； 张文康； ...

本实用新型公开了一种薄带取向电工钢的热处理炉板，炉板的中心设置有气流循环通孔，炉板的硅钢卷预定压接面设置有通气槽，炉板内设置有进气孔，进气孔的第一孔口设置于通气槽中，进气孔的第二孔口设置于炉板的侧壁上。该薄带取向电工钢的热处理炉板在设置通气槽的基础上，进一步设置进气孔，通过向进气孔中导入气流，增加通气槽的进气量，有助于硅钢卷与炉板压接侧边处水蒸气的及时排出，进一步提高卷内硅钢的热处理品质。本实用新型还公开了一种包含热处理炉板的薄带取向电工钢罩式炉。

采用光学显微镜、X射线衍射仪等分析了宁波钢铁有限公司生产的取向硅钢不同工序下的组织及织构演变规律。结果表明:铸坯经过热轧后,沿着厚度方向组织不均匀;一次冷轧并经脱碳退火后,组织由条状纤维状变成等轴状的初次再结晶晶粒,初次再结晶平均晶粒尺寸为18.17μm,织构主要以α织构和γ织构为主;在二次冷轧后,晶粒再次被压缩,转变为纤维状,织构主要为γ织构;经过高温退火后,发生二次再结晶,晶粒异常长大,晶粒尺寸达到厘米级,织构成分为单一且锋锐的Goss织构。 The microstructure and texture evolution of oriented silicon steel produced by Ningbo Iron and Steel Co.,Ltd.were analyzed by optical microscope and X-ray diffraction.The results showed that the microstructure of the slab was inhomogenous along the thickness direction after hot rolling.After first cold rolling and decarburizing annealing,the microstructure changed from strip fibrous to equiaxed primary recrystallized grains,and the average grain size of the primary recrystallization microstructu... 

【作者】 安斌； ...

本发明公开了一种生产高表面质量镀铝硅钢带的方法，属于连续热浸镀铝硅技术领域。本发明的生产高表面质量镀铝硅钢带的方法，包括酸洗、冷轧、清洗、连续退火、热浸镀铝硅和冷却处理，所述冷却包括预冷段和强冷段，其中预冷段是通过预冷风机将带钢温度冷却至620～630℃，强冷段包括三段强冷，三段强冷采用水雾冷却，且控制强冷段冷却速率≥30℃/s。本发明通过控制钢带表面粗糙度、清洗质量、退火炉气氛、气刀参数以及镀层结晶控制器参数，可以有效控制铝硅产品表面结晶尺寸、减少漏镀等典型缺陷，生产出高表面镀铝硅钢带。

采用双辊薄带连铸工艺试制了2.6 mm厚5.28%Si-1.11%Al高硅钢薄带,对比了1050℃×5 min正火及不正火铸带280℃冷轧至0.5 mm后,再经900～1100℃退火的磁性能。结果表明,高硅钢铸带显微组织为等轴晶组织,正火后铸带边部晶粒长大,中心层晶粒变化较小。成品中析出物主要为较粗大的AlN和AlN+MnS复合析出物,尺寸为0.5～2.5μm。与不正火试样相比,正火试样成品铁损大幅降低,磁感小幅下降;随退火温度的升高,两种工艺下铁损和磁感都是先降低后升高,在1050℃出现最低值。 2.6 mm thickness 5.28% Si-1.11% Al non-oriented high silicon steel was produced by twin roll thin strip casting.Magnetic property of the strip un-normalized and normalized at 1050 ℃×5 min was contrasted after cold rolled to 0.5 mm at 280 ℃ and 900-1100 ℃ final annealing.The results show that microstructure of the strip is equiaxed crystal.The surface grain is coarsened and the center layer grain has little change of the normalized strip.The main precipitates are AlN and MnS+AlN with 0.5-2.5 μm s... 

结合工业化生产的无取向硅钢,进行了RH精炼喂CaSi线去除钢中的非金属夹杂物试验研究。针对不同的钙处理条件,分析了CaS夹杂生成热力学,观察了夹杂物的形貌和尺寸分布,确定了夹杂物的类型、数量,探讨了钙处理后钢中夹杂物的变化规律。结果表明,本试验条件下,钙处理可以有效抑制MnS、AlN夹杂物的生成,有效促进钢中微细夹杂物的聚合、上浮、去除,钢质纯净度明显提高。经过合适的钙处理后,钢中的夹杂物以独立存在的CaO为主,同时有少量含CaO、SiO2、MgO的复合夹杂,没有发现CaS夹杂存在。这部分夹杂物的尺寸集中分布在2～20μm,数量约为1.8×105个/mm3。 Experimental study on removal of non-metallic inclusions in non-oriented silicon steel obtained from industrial production by CaSi wire feeding during RH refining process was carried out.The thermodynamics of CaS inclusion formation was analyzed,the morphology and the size distribution of inclusions were observed,and the numbers and types of inclusions were also determined for the steel specimens treated under different calcium treatment conditions.Furthermore,the variation of inclusion characte... 

研究了卷取工艺对一种新型含铜无取向电工钢晶粒尺寸、织构演变、铁损和磁感应强度的影响。结果表明,试样织构组分主要为{111}、{112}、{100}和高斯织构,在550℃卷取、保温2～3h,{100}织构有增强趋势,磁感应强度较高,铁损较低。 The effects of coiling process on grain size,texture,core loss and magnetic induction of a new cold rolled non-oriented electrical steel with copper were investigated.The results show that there are mainly {111},{112},{100} and {110}<001> texture.Coiling at 550℃and keeping for 2～3 hours,the {100} texture is enhanced,magnetic induction is higher and core loss is lower.