接触器铁芯间隙的快速测量

本文介绍了应用单片机和电容传感器技术来检测交流接触器铁芯气隙的快速测量仪。     

电站锅炉管—管对接热丝TIG焊工艺的研究

本文阐述了热丝TIG焊的特点,并通过实验研究论证了这种焊接工艺应用于电站锅炉管道焊接的可行性,同时对各工艺参数的影响进行了详细介绍。     

冲击式振动落砂机的动态响应与分叉

本文考虑一类振动落砂机简化力学模型的次谐运动、稳定性与分叉问题.数值工作表明该模型存在"跳跃"和多种分叉现象.     

硫硼酸阳极化工艺研究

从原理上分析了铝及铝合金硫硼酸阳极化的机理，对阳极化过程进行相关探索，该工艺氧化膜耐蚀性比硫酸阳极化、铬酸阳极化好，同时还具有对环境污染小，节约能源等优点。     

60000m^3／h空分设备快速变工况生产的操作探讨与实践

为降低60000m^3／h空分设备的氧气放散率，武钢氧气公司实施了空分设备的手动快速变工况生产。分析了空分设备运行工况不稳定和自动变工况系统难以实施的原因，介绍了手动快速变工况的理论依据、前期准备工作和实施过程，阐述了手动快速变工况实施进程中应注意的事项。     

基于PT在线注入信号及神经网络跟踪小波变换模极大值变化的配电网故障定位方法

提出了一种配网单相接地在线故障定位的新方法。故障发生后从变电站母线在线向系统注入高频脉冲信号并获取线路上与注入信号相对应的反射行波,在电网结构已知的情况下,通过对反射波的分析进行故障定位。该方法不仅能检测故障点的电气距离,而且能确定故障所在的分支线路,还能通过调节注入信号的大小多次定位故障,提高定位的准确性。应用该方法进行故障定位不受接地电阻的限制。通过M atlab/S imu-link进行了建模与仿真分析,仿真结果验证了该方法的正确性。     

A New Grade Carbon Black Produced by Thermal Plasma Process

This paper presents a new route about producing carbon black,by wich the natural gas cracking is carried out in the absence of oxygen thanks to an electric energy supply externally given by a plasma jet.The carbon black produced by this process has a narrow size distribution and a small average diameter of 38nm as well as a highly branched aggregate.The higher DBP value of 1.40ml/g shows it should be a high structure carbon black.The FTIR spectra shows that there are lots of aromatic c-c bonds and a large amount of nitrogen-coutaining functional groups on the carbon blacks surface,such as-NH,-CN as we3ll as -CH,-OH,-COOH groups.     

HL-2A Tokamak Edge Modeling with B2

The outer divertor plasma of HL-2A and its associated scrape-off plasma have been simulated using a two-dimensional multi-species fluid code of Braams with a simplified neutral gas model. HL-2A has a double-null closed divertor in separate divertor chambers above and below the nearly circular plasma tours. The computed numerical grid is developed according to an ideal magnetic surface. The calculation is involved only with pure hydrogen plasma. The emphasis has been focused on parametric studies involving variation of the assumptions made for the core plasma. The peak temperatures and the heat flux near the target are of the principal concern。     

平面薄膜电感的研究与开发现状

为满足电子系统的表面贴装技术、微组装技术发展的需要，对器件片式化、小型化、微型化的要求越来越高。而电感作为电路的三大基础性元件之一，其片式化、薄膜化势在必行。本文就近几年国内外片式薄膜电感的发展研究状况做一综述。     

微波固化环氧树脂(E44/DDM)的热性能及膨胀性能

利用微波辐照固化环氧E44／二苯甲烷二胺(DDM)体系，考察了固化温度、固化时间以及微波功率之间的关系，分析了固化过程。利用FT-IR、DSC、热膨胀仪分别表征了体系的固化度、玻璃化转变温度(Tg)、热分解温度以及热膨胀系数(α)。结果表明，与热固化过程相比，微波能显著提高E44／DDM的固化速度，缩短凝胶化时间。且微波固化物具有较高的热分解温度和较低的线膨胀系数α。