硅钢资料

一种提高有效氮和底层质量的高磁感取向硅钢制造方法：冶炼后连铸成坯；对铸坯加热；热轧、常化及酸洗后时效冷轧；在湿式气氛下脱碳退火；在湿式混合气氛下均热；在湿式混合气氛下渗氮退火；进行后工序。本发明与现有技术相比，通过合理控制渗氮过程，提高渗氮后钢板基体内氮含量与总氮量之间的比例达到80%以上，使无点状露晶产生，最终获得产品的底层质量优异。

【作者】 严伟明； ...

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. 

涂层技术在高磁感取向硅钢生产中起着重要的作用.根据生产实践,介绍了高磁感取向硅钢生产中涂层的种类和作用、涂料的成分和对产品性能的影响、涂层工艺质量控制要点和检验方法等,并提出了通过优化涂层工艺改善高磁感取向硅钢性能和外观质量的方法. Surface coating technique plays an important role in producing high magnetic inductivity grain-oriented silicon steel.Based on production practice,this paper describes the types and function of the coating,the composition of the coating and its effect on the product performance,the quality control and inspection method for the coatings,as well as proposes ways to improve the magnetic property and surface quality of the steel by optimizing the coating process. 

通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响。对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响。结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加。退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少。 The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual st... 

本发明涉及到一种铸铝转子硅钢片、采用该硅钢片的转子及制造转子的方法，该铸铝转子硅钢片包括圆形板片状本体，本体中心开设有转轴孔，本体上还以转轴孔为中心周向均布有多个铸铝孔，本体外缘设置有与铸铝孔一一对应的凹槽，本体两侧侧面均涂覆有绝缘层。采用上述硅钢片的转子包括转轴，所述转轴上套接有铁芯，该铁芯由大量上述的硅钢片层层叠压而成，每片硅钢片上的铸铝孔均相互正对，在铁芯上形成多条贯穿铁芯的通孔，每条通孔内设置有一条导条，铁芯两端分别连接有导电端环，各导条的两端分别伸出通孔与导电端环电性连接，各导条对两导电端环的拉力使两导电端环紧压在铁芯两端。

本发明揭示了一种高牌号无取向硅钢及其生产方法，生产方法包括冶炼、连铸、热轧、酸洗、切边、常化、冷轧，冶炼最终所得钢水化学成分以质量百分比计为：C≤0.005％、Si≥2.8％、Als0.5～1.2％、Mn0.25～0.8％、P≤0.02％、S≤0.0040％、N≤0.0020％、Nb≤0.0020％、V≤0.0020％、Ti≤0.0020％，其余为Fe以及不可避免的杂质；切边工序对热轧卷板的两侧进行切边，单侧的剪切宽度为10～20mm；常化在罩式退火炉中进行，均热温度为T＝{(990～1010)‑100×[30×(Si)+20×(Al)]}℃，(Si)为Si的质量百分比，(Al)为Al的质量百分比，均热时间为6h，之后冷却；钢卷在罩式退火炉中冷却至预设温度T0时取出送至冷轧线冷轧，T0为120～180℃，第一道次轧制时的轧制力恒定且轧制力为11000～12000kN。本发明可避免高牌号无取向硅钢在冷轧过程中由于脆性高而导致的频繁断带。

本发明揭示了一种高硅无取向电工钢及其生产方法。该方法包括：1）钢水冶炼并连铸成坯；2）加热并保温，之后热轧得到热轧卷板，其中粗轧出口温度940±20℃，精轧终轧温度840±20℃，卷取温度650±20℃；3）常化，常化温度((732~742)+3000[Si])℃，常化时长4min~5min；4）常化后直接进行冷轧，而后连续退火和涂层，退火温度940℃~990℃且退火时长1.5min~3min；5）涂层处理后的钢板加工成型，而后进行去应力退火，退火温度为((761~766)+3000[Si])℃。如此，在保证磁性能的同时，解决了冷轧难度大的问题。

对新能源汽车以及驱动电机的现有市场和未来市场规模进行梳理分析，通过自建计算公式推导出我国2021年1-11月份驱动电机用电工钢的总量，进而预测未来10年中国新能源汽车驱动电机用电工钢情况，为无取向电工钢的生产和在电机中的应用提供有价值的参考。 The current market and future market size of new energy vehicles and traction motors were analyzed,and the total amount of electrical steels used in traction motors in China from January to November 2021 was derived by using self-built calculation formulas,and then the situation in the next ten years of electrical steel used in traction motors of new energy vehicles in China was predicted.It will provide a valuable reference for the production of non-grain oriented electrical steel and its appli... 

采用轧制法制备出具有低铁损高磁感0.23mm厚6.4%(质量分数)Si高硅钢。沿轧制方向的最终磁性能为B8=1.474 T,B50=1.714 T;P10/50=0.30W/kg,P15/50=0.88W/kg。利用X射线衍射及背散射电子衍射(EBSD)技术分析了高硅钢在轧制及退火过程中的织构演变过程。结果表明,通过采用大压下率热轧,确保热轧板次表层中产生更多的高斯织构,随后进行遗传;温轧板中粗大的晶粒有利于冷轧剪切带的形成;冷轧板经脱碳退火后生成强{210}〈001〉织构及次表层较强的高斯织构是在轧向上获得高磁感的原因,归因于其在{111}〈112〉冷轧形变晶粒内的剪切带优先形核并长大;最终退火后虽出现了随机取向,但以{310}〈001〉织构为代表的η织构得以保留并且增强,进一步提高了磁感。随着退火温度的升高及保温时间的延长,高硅钢薄板晶粒尺寸不断增大,铁损明显降低。 6.4wt%Si high silicon steel sheets(0.23mm thick)with low iron loss and high magnetic induction were successfully produced by rolling process.The final magnetic properties along the rolling direction(RD) were:B8=1.474T,B50=1.714T;P10/50=0.30 W/kg,P15/50=0.88 W/kg.The texture evolution during rolling and annealing was investigated by means of X-ray diffraction and electron backscatter diffraction(EBSD).It was found that more Goss textures formed in the subsurface of hot rolled plates by using larg... 

本发明涉及一种高性能取向硅钢冷轧工艺，具体涉及取向硅钢制造技术领域。本发明的冷轧工艺包括一次冷轧和二次冷轧，其中，取向硅钢热轧板厚度在2.0～3.0mm，一次冷轧轧制采用4或5道次轧制，轧至厚度0.60～0.62mm，轧制温度为100℃～105℃；二次冷轧轧制采用2道次，轧至厚度0.24～0.26mm，轧制温度为95℃～100℃。本发明通过对一次冷轧和二次冷轧中各道次的压下率、轧制张力、轧制速度、轧制温度进行优化设计，从而能够进一步优化织构，确保二次冷轧板高斯织构含量在0.8～1.5％，且轧制稳定性高，进而有效保证了所得取向硅钢的磁性能。

采用X-射线衍射分析技术测定了取向硅钢热轧板在不同压下率下不同厚度处的织构。结果表明,在压下率低于80%的情况下,几乎所有试样的不同厚度处的织构均为旋转立方织构类型{100}<011>,但不同压下率、不同厚度处的织构强度存在很大差异;在压下率大于80%的情况下,不同试样的不同厚度处的织构类型发生了变化,其织构类型为旋转立方织构或高斯织构{011}<100>,且当织构类型为旋转立方织构时,织构强度存在很大差异,而当织构类型为高斯织构时,织构强度差异相对较小。 The texture of the grain oriented silicon steel hot rolled plate at different compressibility has been measured.The experimental results have shown that the texture of all samples at different thickness is {100}<011> when the compressibility is below 80%,and its intensity at different compressibility and thickness is difference.The texture of all samples at different thickness is variable when the compressibility is above 80%,it is {100}<011> or {011}<100>,and the intensity of ...