复杂环境下磁悬浮转子噪声和振动的测试与分析

介绍了磁力轴承的特点，阐述了B＆K振动噪声测试仪的测试要求，以及所有的测试状态和测试方法。接着对噪声测量结果和振动测量结果进行了总结和分析。这对于研究磁力轴承的噪声、振动以及转子的临界转速有一定的参考意义。     

咪唑啉表面活性剂的合成及用于制备ZnSe纳米材料

合成了两种咪唑啉型双子表面活性剂二（2-十一（十七）烷基-1-甲酰胺乙基咪唑啉）己二胺季铵盐（SUAEIHDI、SHAEIHDI），并进行了红外表征；然后以Zn（Ac）2-2H20为锌源，硒粉为硒源，水合肼为还原剂，SUAEIHDI为表面修饰剂，采用水热法于150℃反应24h，制得球形ZnSe纳米材料，用TEM、SEM、IR、UV-vis和XRD等手段对ZnSe纳米材料进行了表征，并对球形ZnSe的形成机理进行了初步探讨。结果表明：该咪唑啉型双子表面活性剂对于纳米材料具有良好的形貌控制作用和表面修饰作用。     

协同设计中的应用共享技术研究

文章针对目前应用共享的国内外研究现状,从应用共享的原理入手,对应用共享的一个核心问题--共享机制以及按共享机制的分类进行了分析和研究,进而讨论了应用共享的实现过程所涉及到应用共享实现方法.并通过协同设计工具及系统的开发对实现应用共享过程中遇到的问题,提出了一些相对较优的解决办法.     

用于金属针布钢丝球化退火的罩式炉

金属针布的制造工艺，一般是球化钢丝经过高速轧机轧制成坯条，经再结晶退火后在冲淬卷生产线上冲齿、淬火、卷装成产品；或者是球化钢丝经高速轧机轧制成坯条，直接在冲淬卷生产线上冲齿、在线退火、淬火、卷装成产品。由于球化钢丝的质量直接影响金属针布的产品质量，因此，钢丝的球化工艺也直接影响球化钢丝的质量。以往，我公司金属针布钢丝的球化工艺采用预抽真空井式炉退火，尽管该炉型全部采用计算机控制，并且在国内处于领先水平，但在实践中发现，由于井式炉采用上置循环风对炉罐内进行热交换，     

基于特征的产品模型及产品建模系统

基于特征的产品模型是ＣＡＤ／ＣＡＰＰ／ＣＡＭ集成以至ＣＩＭＳ实现的关键技术。文中提出了基于特征的产品模型结构，讨论了集成化的ＣＡＤ／ＣＡＭ系统对特征造型系统的要求，提出了基于特征的产品建模系统的结构。     

Preparation and elements analysis of porous fluorescent glasses

A large variety of porous fluorescent glasses were prepared and the concentration of different elements in these glasses was analyzed. The start porous glasses were soaked in a solution containing soluble salts and then heated at 650 ℃ for 3 h to decompose the salts in the pores into oxides. Fluorescent agents, such as UO3, Eu203, were impregnated into the porous glasses to prepare the fluorescent glasses. The results show that soaking is a feasible method to prepare the glass sphere with compositions distinguishable from each other and easy to be located in a complicated background. Six or more components can be impregnated together into one glass sample and the concentration of them can be analyzed accurately. UO3 and Eu203 can be impregnated into porous glass to make the glass strongly fluorescent. Higher concentration of Eu203 produces stronger fluorescence while higher concentration of UO3 reduces the fluorescence intensity because of the concentration quenching effect.     

铸态高韧性球铁QT400-18的生产应用技术

为了稳定生产铸态QT400-18、厚壁100～200 mm的高炉冷却壁铸件,通过生产试验与调整,控制化学成分(ω):C=3.35%～3.80%,Si=2.5%～2.9%,Mn≤0.2%,P≤0.055%,S≤0.025%;冲天炉熔炼,采用球铁专用生铁和铸造焦,出铁温度1 500℃;采用低稀土FeSiMg8RE3球化剂进行球化处理,75SiFe在包内、出铁槽、浮硅及随流等多次孕育,获得铸态强度δb≥430 MPa,伸长率≥20%的铸态球铁铸件.     

Cup-drawing formation of steel sheet with nickel coating by finite element method

The finite element method （FEM） simulation of deep-drawing of steel sheet with nickel coating based on the solid element and dynamic explicit method was reported. Penalty function method was used to treat the contact algorithm. The friction between the punch and coating sheet was based on a Coulomb formulation. The combination of coating and substrate was defined as tied with failure contact. The results of the simulation illustrate that the steel sheet and the nickel coating do not delaminate at the interface. The stress field of the nickel coating is more complicated thala that of the steel substrate. Furthermore, it is found that the punch-nose radius is the most unsubstantial part for the intensity of the entire deep-drawing part and the thinnest part, it is a dangerous zone for the break. At this zone, the thickness thinning of the steel sheet and the nickel coating are up to 4.8% and 6.7%, respectively. Meanwhile, it is found that the curve of the variable blankholder force （VBHF） designed can improve the formability of sheet.     

松香基咪唑啉的合成及其性能的研究

 以松香和多乙烯多胺为原料合成了松香基咪唑啉(ORI)。并通过正交实验，对影响反应的各个因数进行模拟回归，得出适宜的反应条件：反应温度在230℃～240℃，二乙烯三胺和松香的摩尔用量比为1.6∶1，反应时间为5小时，体系的真空度2.67 kPa～5.33 kPa.     

悬臂式蒸－空锤改为电液锤

悬臂式蒸－空锤改为电液锤０３００２４太原重型机械学院李永堂，刘建生，卓东风太原机车车辆厂杨绍敬，王潞虎蒸汽－空气锤是我国中小批量锻件生产的主要设备。据不完全统计，我国目前拥有１ｔ以上的蒸汽－空气锤２０００多台，加上１ｔ以下的，数量就更多了。但是，蒸汽...