四重铝箔轧机工作辊辊形曲线的优化

针对国内某四重铝箔轧机生产装饰箔时出现的二肋浪形问题,根据板形理论分析认为箔材轧制中产生二肋浪形的原因是工作辊对应区域的等效凸度过大.分析了热膨胀和冷却、工作辊粗糙度和工作辊曲线等因素对工作辊等效凸度的影响,确定现场条件下影响工作辊对应区域等效凸度的主要因素为工作辊曲线参数,参考相关文献推导了铝箔轧机工作辊曲线表达式,对采用不同凸度、不同半角时的工作辊曲线进行了对比,从中选出适合当前工况下的工作辊曲线.采用该工作辊曲线进行现场实验,实验结果表明通过提高工作辊曲线半角角度可使二肋浪问题得到解决.     

Effects of HNO3 concentration on the pit morphologies of aluminum foil etched in HNO3–HCl and HNO3–H2SO4–HCl solutions

In this work, the effects of HNO₃ concentration on the pit morphologies of high-cubic-texture aluminum foil etched in HNO₃–HCl and HNO₃–H₂SO₄–HCl solutions were investigated. When the aluminum foil was etched in HNO₃–HCl solutions, the morphologies of pits transformed from irregular tunnels to typical tunnels (as inverted pyramids) and shallow cuboids as the HNO₃ concentration in the etchant solution was increased. However, as the HCl concentration in the etchant solution was increased, the morphologies of pits transformed from shallow cuboids to typical tunnels (as inverted pyramids) and irregular tunnels. When the aluminum foil was etched in n N HNO₃–(7.2?n) N H₂SO₄–0.8 N HCl solutions, the morphologies of the pits transformed from typical tunnels (i.e., the number of sub-tunnels formed on the main tunnels increased) to irregular tunnels (corrugated tunnels and polyline tunnels) as the HNO₃ concentration in the etchant solution was increased. These effects are attributed primarily to corrosion on the (100) and (010) faces of pits being accelerated and to the (001) faces being prone to passivation to different degrees when various concentrations of HNO₃ are added to the etchant solutions.     

Effect of tunnel structure on the specific capacitance of etched aluminum foil

The morphology of etched aluminum foil was observed using scanning electron microscopy, which led to the establishment of a cylindrical model and two merged models, considering the fixed weight loss of etching. The maximum of specific capacitance and the corresponding optimum values for tunnel sizes at various anodization voltages were predicted. The increased size distribution and taper of tunnels were demonstrated to decrease the specific capacitance, whereas the addition of polymeric additive into the tunnel widening solution was demonstrated to increase the capacitance. The formation of merged tunnels on the etched aluminum surface, irrespective of the presence of row-merged tunnels or cluster-merged tunnels, resulted in a dramatic decrease in the specific capacitance. It is concluded that, enhancing the uniformity of tunnel size and distribution and avoiding the formation of merged tunnels are the effective approach to achieving the higher capacitance for the tunnel etched and formed aluminum foil.     

板形辊在铝箔板形控制中的应用

随着计算机技术的发展和普及,板型辊在铝箔轧制领域的应用越来越成熟。本文以奥钢联（VAI）公司空气轴承式板形辊为例,介绍板形辊在铝箔生产中的应用,对其内部结构和工作原理等方面进行了简要的分析。以提高大家对板形辊的认识。     

爆炸箔起爆系统的发展

 对爆炸箔起爆系统及其零部件的发展现状进行概述,重点分析了爆炸箔起爆系统中高压变压器、储能脉冲电容和高压开关发展现状及应用前景。同时还对国内外相关的研究水平作了简要对比,结合国外的研究重点和发展趋势对爆炸箔起爆系统的发展进行分析,为爆炸箔起爆系统的小型化、集成化和低能化的优化设计提供参考。     

Zn/ZnO纳米线电极的制备及其在柔性杂化太阳电池中的应用

低温下,采用水热法,在金属Zn片上制备了Zn/ZnO纳米线电极。扫描电镜(SEM)、透射电镜(TEM)分析结果表明,该ZnO为垂直于基底生长的纳米线结构,并由X射线衍射(XRD)分析得到进一步确认;在该Zn/ZnO电极上旋涂聚3-已基噻吩(P3HT)得到Zn/ZnO/P3HT杂化电极,紫外可见吸收光谱(UV-vis)表明P3HT的存在拓宽了电极的光响应范围;对Zn/P3HT和Zn/ZnO/P3HT电极进行荧光光谱(PL)测试,发现ZnO/P3HT杂化膜的荧光发射强度降低,说明光生激子在复合前即在ZnO/P3HT异质结界面处发生分离。在此基础上,制作了结构为Zn/ZnO/P3HT/PEDOT:PSS/ITO的柔性杂化太阳电池,于模拟太阳光(100mW/cm2)照射下测试该电池的光电性能:电池的开路电压Voc为334mV,短路电流密度Jsc为1.72mA/cm2,填充因子FF为0.39,光电转换效率η为0.22%。     

箔片轴承结构阻尼的评价

为了更好地研究箔片轴承的动特性和稳定性，得出与实验结果相符合的评价方法，首先对国内外几种有关箔片轴承库仑阻尼的研究方法进行了比较，根据阻尼和刚度分离评估的思想，考虑箔片之间和箔片单元之间的相互作用，基于能量耗散的思想提出了一种有效的箔片轴承阻尼评估方法，最后对双层同向自由平箔结构箔片轴承的结构阻尼进行了详细分析和数值比较．结果表明：就结构参数而言，在小偏心率时，结构阻尼对稳定性和动态参数的影响较大；在大偏心率时，其影响则相对不明显．     

高纯铝箔在混合酸溶液中蚀孔的引发和生长机理

通过恒电流实验研究了高纯铝箔在混合酸溶液中不同腐蚀时间时的试样表面形貌，探讨了蚀孔的引发和生长过程．对腐蚀区和未腐蚀区进行ＥＤＡＸ微量元素分析，初步提出蚀孔的引发和生长控制模型，合理地解释了恒电流实验的结果     

箔带轧机辊缝中力场分布规律的研究

首次将箔带轧机辊系结构视为三维多体接触问题进行研究,并对轧件的塑性行为予以理想化,运用有限元法成功地求得了辊缝中力场的分布规律,计算结果与实测结果相吻合．这为箔带轧机设计、轧制工艺优化和板形控制等提供了一个高精度的分析方法．图４,参５．     

电解铜箔生产废水中重金属排放标准探讨

对电解铜箔生产废水中重金属污染物进行了分析。探讨了废水中国家排放标准未列入的铟、钴、钼重金属的排放标准问题。