利用变频调速器对砂布砂纸生产线进行恒张力控制

本文根据弹性力学中的虎克定律，结合砂布砂纸生产特点，分析计算了生产线中基体、应变、速度、张力、转速等参数之间的关系，建立了砂布砂纸生产线中传动辊转速（频率）运动方程。然后利用此规律通过交流变频调速器对电机转速的控制，实现了砂布砂纸生产线的恒定张力控制。系统控制简捷、稳定，调节方便，节约能耗，重复性好，实用性强。     

赤泥粉煤灰免烧砖工艺配方研究

利用铝厂赤泥、自备电厂粉煤灰为主要原料研制了免烧砖。自然养护的赤泥免烧砖28d达到了非烧结鲁通粘土砖标准JC／T 422—1991（1996）中15级要求。实验结果表明，各原料的最佳配比总结为：赤泥，25％～40％；粉煤灰，18％～28％；骨料，30％～35％；石灰，8％～10％；石膏，2％～3％；水泥，1％。赤泥粉煤灰免烧砖有望成为粘土烧结砖的替代产品。     

Ti衬底层对FePt颗粒膜的微结构和磁特性的影响

在室温下,应用对靶直流磁控溅射设备在普通玻璃基片上制备了FePt(30nm)/Ti(tnm)颗粒膜样品,随后,在真空中进行了原位退火.详细研究了Ti衬底层对FePt颗粒膜的微结构和磁特性的影响.X射线衍射图谱表明样品形成了较有序的L10织构,Ti和FePt形成了三元FePtTi合金.当Ti层厚度t=5 nm、退火温度Ta=500℃时,样品具有高度有序的L10织构、小的颗粒尺寸和优异的磁特性.矫顽力超过了6.7 kOe,饱和磁化强度为620emu/cc.并且具有较小的开关场分布.结果表明FePt/Ti颗粒膜系统可作为超高密度磁记录介质的候选者.     

Temperature Dependence of the Magnetocrystalline Anisotropy in Nd_2Co_(14)B Compound

Easy and hard magnetization curves of Nd_2Co_(14)B compound have been measured withextracting-sample-magnetometer(μ_0H_(max)=6T)at 10～300 K.Magnetic anisotropy constants K_1 and K_2have been determined by fitting the hard magnetization curves,in which only K_1 ,K_2 and misalignment anglehave been taken as fitting parameters.The values of K_1 and K_2 at 4.2 K were derived by extrapolation.Anisotropy coefficients,x_2~° and x_4~°were derived from the anisotropy constants.The anisotropy constant K_2increases rapidly with increasing temperature when TT_(sr).The temperature depen-dence of the magnetic anisotropy coefficient x_2~° was fitted with the formula.The anisotropy coefficients x_2~°can be well described by the tenth-power law from 4.2 K to T_(sr)and by the sixth-power law from T_(sr_ to 300 K.     

在斜轧延伸机上使用拉力芯棒的新工艺

介绍了在管材斜轧延伸机上使用拉力芯棒的优点。采用拉力芯棒可以提高速度效率，可以轧制薄壁管，还可减小不均匀变形及改善管材内表面质量。     

155kA预焙槽多组阳极脱落的原因及对策

通过对155kA预焙槽造成多组阳极脱落的原因分析和采取对策的总结，可作为其它容量预焙槽处理类似事故的借鉴，起到预防和杜绝此类事故发生的积极作用。     

Effect of rhenium addition on isothermal oxidation behavior of single-crystal Ni-based superalloy

The isothermal oxidation behavior of a nickel-based superalloy, which we designate as DD32, containing 4 wt.% rhenium and another alloy (DD32M) without rhenium were investigated at 900, 1000 and 1100 °C. Oxidized alloys were characterized by SEM, EDX, EPMA and XRD. The two alloys revealed similar oxidation rates at 900 °C, while the DD32 alloy showed a slightly higher mass gain than that of the DD32M alloy during 1000 and 1100 °C exposure. Surface and cross-sectional examination indicated that DD32 alloy showed nonuniform oxidation between dendritic and interdendritic areas at all temperatures. Similar different oxidation behavior between dendritic and interdendritic regions was also observed in the DD32M alloy at 900 °C. However, DD32M showed relatively uniform oxidation at 1000 and 1100 °C exposure. Therefore, Re addition clearly induced the nonuniform oxidation of the alloy.     

基于ASP模式的产品设计支持系统开发

分析了基于网络的现代产品设计支持系统开发的关键问题，利用ASP模式构建产品设计支持系统开发的结构框架。整个开发模式为不同层次的产品设计参与成员提供一集成人机智能与人人智能的设计支持系统，有效地提高了中小企业的产品开发能力。     

Synergistic Extraction of Rare Earth Ions by 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and Trioctylphousphine Oxide in Paraffin Wax

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摆动式TIG焊焊缝跟踪技术

介绍以弧压为传感信号的摆动式TIG焊焊缝跟踪技术。硬件设计方面，采用两级滤波的方法，前级主要用来保护控制电路，后级主要用来滤除杂波。软件处理方面，针对搭接TIG焊的特点，采用摆动焊接方法，利用积分比较法，实现了焊缝的自动跟踪；提出加权处理的方法，对积分比较法进行修正，进一步保证了跟踪的实现，提高了跟踪精度。试验证明，该技术控制可靠，焊缝跟踪效果好。