管道多单元磁轭法轴向磁化有限元分析和设计

利用有限元方法对局部管道、磁轭法磁化结构及外围空气进行了三维实体建模,通过求解计算,定量分析了线圈安匝数、铁芯截面积以及接触面气隙对管道磁化场的影响;求解了有柱状缺陷和周向缺陷时,缺陷漏磁场的分布情况。研究结果表明:磁化器安匝数越大,铁芯截面积越大,接触面气隙越小,管道磁感应强度越大;磁感应强度在缺陷处出现极值和方向变化。     

磁选环柱磁系的改进

针对大孤山选矿厂磁选环柱弱磁粗选尾矿铁品位高于现场筒式磁选机的问题,对原磁选环柱进行了增设1个常通电励磁线圈和在所有励磁线圈上增设聚磁环轭的改造,研究了改进后磁选环柱的重要工作参数,并对改进前后的磁选环柱进行了选矿效果对比。结果表明,在设备工作参数和试验条件相同的情况下,改进后的磁选环柱既保证了精矿质量,又降低了尾矿铁品位2.2个百分点,提高了精矿铁回收率2.95个百分点,达到了理想的改造效果。     

磁轭复合阶梯冲模的设计

以冲压某大型发电机上的磁轭为例,针对企业现有设备吨位不足的情况,在对其冲压工艺、模具设计要点和制造工艺进行充分分析后,设计制作了一次性冲制的磁轭复合阶梯冲模,该设计采用阶梯加斜刃和复合模结构等形式,同时还提出了导柱的优化设计方法,解决了大型磁轭零件的冲压生产,为企业创造了良好的经济效益。     

汽车万向节叉零件成形工艺设计

分析了汽车万向节叉零件成形工艺,该万向节叉成形是由落料、裁口切断（一模两件）、弯曲、压弧、卷圆及弯曲成形6道冲压工序,再经过7道机加工序来完成整个制件。此制件是由精确计算和分解成多道工序而完成的。     

Target utilization of planar magnetron sputtering using a rotating tilted unbalanced yoke magnet

The dependence of the magnetic flux density, erosion uniformity, and target utilization on the yoke magnet tilt angle was investigated in a planar magnetron sputtering system, using a rotating, tilted, unbalanced, asymmetrical magnet. In these experiments, circular and elliptical outer yokes were used as the rotating yoke magnet. The magnetic flux density distributions were measured two-dimensionally on the target surface and compared with the erosion uniformity. As the yoke magnet tilt angle increased, the magnetic flux density distribution expanded and became more uniform, and the eroded areas expanded toward the outside of the target surface. With a circular outer yoke, as the yoke magnet tilt angle increased from 0° to 8°, utilization of a 5-inch target linearly increased from 60 to 80%. On the other hand, with an elliptical outer yoke, the utilization of the target was approximately 70%, regardless of the yoke magnet tilt angle. This is because, as the tilt angle is increased, the inner area of the target eroded more deeply, while the outer area eroded less deeply. The deposition rate when using the elliptical outer yoke was 1.2 times faster than that of when using the circular outer yoke at the same magnet tilt angle. By decreasing the magnetic flux density on the inner area of the target with an elliptical outer yoke magnet, a higher deposition rate may be obtained than is observed with a circular magnet, and target utilization of over 70% can be achieved.     

永磁起重技术的发展概况

介绍和论述了永磁起重技术的研究及其进展概况。     

一种衬衫过肩工艺模板的设计

在模板缝制工艺技术中,最核心的问题就是模板的设计.在分析衬衫过肩缝制工艺的基础上,研究了过肩工艺模板化的方法,通过与传统工艺的对比阐述了模板技术的优势.     

自会聚偏转系统中磁滞损耗的估测

通过空间磁场和感应电压的测量 ,对自会聚偏转系统偏转磁芯中的二极场、六极场磁通密度的分布进行了计算 ,并根据磁滞损耗的经验公式对Philips 17英寸CMT的磁滞损耗进行了估测。该方法适用于估测高次谐波场对磁滞损耗的影响 ,降低能量损耗的偏转系统磁芯结构的优化 ,磁性材料的选择等。     

生产中偏转磁芯变形的控制

主要分析了偏转磁芯产生变形的原因及控制方法．     

14型高分辨率彩色显示管的性能及其应用

本文介绍了ＢＭＣＣ生产的１４型高分辨率彩色显示管的性能。简单的讨论了表面处理、点距、电子枪、偏转线圈、管子在显示器中的应用，以及如何满足ＭＰＲ一刀标准。并给出了管子及其组装产品（ＩＴＣ产品）的性能规格。