一种磁控管用扼流线圈仿真设计

采用电路仿真软件仿真滤波组件S参数曲线,观察曲线随器件参数的变化;介绍利用三维全波电磁仿真软件HFSS简化设计流程的方法,并与测试结果对比。结果表明:利用3D仿真软件在满足器件设计精度的同时可以简化线圈的设计流程。     

Decreasing Filter Cake Resistance by Using Packing Structures

Packed beds used in absorption columns are evaluated to determine whether they can also be beneficial for cake‐forming filtrations. To assess this, model systems are characterized and separated by using a dead‐end filter cell. Filtrations are conducted with different packings; the filtrate amount over time and resulting turbidity are evaluated. Packings increase the filter cake resistance and the separation time of the cakes formed with approximately incompressible solids. However, they exhibit a positive effect on the filtration of a more complex, compressible substance; the process is not only accelerated, but also the quality of the obtained filtrate is not compromised. These results demonstrate potential in the use of packed beds for the filtration of complex biogenic suspensions.     

Interface reactions between rutile coatings and molten aluminium or AlSi7Mg0.6 alloy

Rutile coatings deposited on corundum substrates are considered as promising functional elements improving the efficiency of the filtration of oxide inclusions out of aluminium melts. This contribution describes the reactions between rutile and two kinds of the aluminium melts and discusses the consequences of these reactions for the filtration process. It was found that the contact of rutile coatings with molten aluminium leads to the formation of a corundum layer at the solid/liquid interface. The exposure of the rutile coatings to molten AlSi7Mg0.6 alloy produces an interface layer of MgTiO₃. The interface layers possess defined orientation relationship to rutile which is characteristic for locally heteroepitaxial growth. The density functional theory calculations revealed that the TiO₂/α-Al₂O₃ and TiO₂/MgTiO₃ interfaces with the orientation relationships observed experimentally have low interface energies. The mechanisms of the interface layer formation and the impact of these layers on the degradation of the rutile coatings are discussed.     

ZYLD自动压滤机控制系统的改进

ZYLDⅡ型自动压滤机新增设了电流传感器、电流采集模块和液晶触摸屏 ,实现了脱水工艺参数———进料时间、压榨时间、吹气时间可以随工况条件变化随时调整 ;滤板压紧程度由主电机电流控制 ,主电机电流可预先设置在触摸屏上 ,并且可根据隔膜新、旧情况设定合适的电流     

IPv6防火墙的设计与实现

IPv6所提供的巨大的地址空间以及所具有的诸多优势和功能。本文首先介绍了IPv6与IPv4的差异以及IPv6新特点对防火墙的要求,然后介绍了我们开发出的一种支持IPv6协议的防火墙。     

高效真空过滤机技术进展及应用效果(续)

论述了盘式真空过滤机、陶瓷过滤机、水平带式过滤机、永磁过滤机和蒸汽过滤机的技术进展、设备结构性能特点和应用效果。     

XAZ340—4GF反洗压滤机的研制与应用

详细介绍了XAZ340—4GF反洗压滤机的研制过程,介绍了该机型的结构、原理、工艺系统。并简要介绍了其工业应用情况。     

用表面活性剂助滤大冶铜精矿的试验研究

为降低大冶铁矿铜精矿的滤饼水分，进行了表面活性剂的助滤试验。试验研究了表面活性剂种类和用量、矿浆pH值、过滤压差及药剂添加方式等条件对铜精矿过滤过程的影响，结果表明，当矿浆pH=10，用量为125和140g／t时，助滤剂TS-2和TS-1既能提高过滤速度，又能降低滤饼水分约3个百分点。若采用分段—喷洒加药方法，效果更佳。     

MS Project 4.0 forWindows使用初探

本文介绍了微软公司项目管理软件Project4．0Forwindows的几点使用小经验。