Papers by Keyword: Aluminum Foil

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Authors: Mahdi Hassani, Seyed Siavash Karimi Madahi, Hassan Feshki Farahani, Hossein Sarabadani
Abstract: Capacitor bushings are one of the key components in power transformers. Although their price is a negligible part of the total price of the power transformer, their quality has a significant effect on performance and reliability of power transformers. In high voltage capacitor bushings, the intensity of voltage and electric field on bushing abacus is very high. This high intensity is also observed in flange parts. The amount of multi layer insulator among the electrodes or floating plates in capacitor bushing make equi-potential surfaces and reduction of electric field in these areas can greatly improve the capacitor bushing performance. In this paper, we investigate the reduction of field intensity and electrical tension and also improvement in voltage control by displacing floating plates which are in the form of aluminum foils stick to impregnated paper. To calculate the field intensity, we used the MAXWELL software using FEM (Finite element method). Using this new method of placing capacitor core its effect on voltage profile reduction and field electrical tension is shown. Over voltage and pollution effects are also investigate on power transformer bushings.
Authors: Chang Lang Chen, Mei Chun Lo, Ming Chw Wei, Shi Wei Wang
Abstract: In packaging market, Vacuum Plate of Aluminum by UV offset printing is light impediment effectively, moisture-proof, and forgery-proof and reaches the request of the green packaging production. Thus, the packaging of Vacuum Plate of Aluminum is used widely. This study was a true experimental research. The test form employed was the printing quality control strip from international printing specification. It was used to record and analyze the color variance between Vacuum Plate of Aluminum and Aluminum Foil with white board and no white board using UV Offset Printing. The study indicated the comparison of Tone Value Increased & the difference of Color Gamut Range among these three packaging materials via C, M, Y, K four colors tone value and RGB area testing, and results reveals that the tone value on the Vacuum Plate of Aluminum with white board increased most among these three materials; the dot gain percentage of the Vacuum Plate of Aluminum is less than 15% which with the highest stability than others. All signature findings are given in Fig.1 and Fig.2. These results are entirely consistent with research hypotheses.
Authors: Xian Quan Jiang, Ning Li, Hong He, Xiu Jin Zhang, Chun Chi Li, Hao Yang
Abstract: The mechanical properties and microstructures of different state cryogenic treatment 3102 Al-foil, such as H19,H26 or O state, were studied by tensile testing, optical metalloscopy (OM) and transmission electron microscope(TEM). The results showed that, after deep cryogenic treatment, the strength of H19 state increased and the elongation to failure decreased. In the same time, the yield strength increased and breaking strength decreases and the elongation decreased dramatically for O state, but, for H26 state, the strength and elongation increased dramatically, which correspond to the properties of this state at low temperatures. OM and TEM observation showed cryogenic treatment caused by the fibrous grains broken down and many grains with the size of 0.1~3μm These fine equiaxial grains can improve the strength and elongation of the Al-foil. On the contrary, the atomic shrinkage force slips high density dislocations into interface of the grains and forms terraces and fissure in it. That leads to the elongation decrease and the interface been broaden at very low temperature. The grain size of O state with cryogenic treatment is larger than without cryogenic treatment. As a result, the synthetic mechanical properties of H26 state improved by the way of cryogenic treatment, but the H19 state and O state should avoid use and put at low temperatures.
Authors: Jian Wang, Hong Chen, Zhi Qing Yuan
Abstract: In order to realize the adhesion between low-density polyethylene film and aluminium foil. Several nanofibre arrays were fabricated on low-density polyethylene film by template method to imitate strong adhesive nanohairs on the feet of gecko lizards. The results showed that the nanofiber arrays greatly improved the peel stength between low-density polyethylene film and aluminium foil and met the actual requirement. The peel strength increased with the decrease of the adjacent distance of the nanofibre arrays. when the distance and height of nanofibre kept unchangable, the peel strength increased with the deccrease of the diameter of the nanofire when the diameter is larger than 500nm. The peel strength decreased with the deccrease of the diameter of the nanofibres when the diameters were smaller than 500nm. The peel strength increased with the increase of the height of the nanofibres when the heights of nanofibres were lower than 5μm. When the heights of nanofibres were higher than 5μm, the peel strength decreased with the increase of the heights of nanofibre arrays.
Authors: Fu Sheng Pan, Jian Peng, Ai Tao Tang, Jing Zhang, Qing Liu, Z. Xiao Guo
Authors: J. Zhou, De Bin Shan, Bin Guo, D.L. Ma
Abstract: With the rapidly growing demand for the micro-thin-wall parts, the development of high accurate forming processes for very thin sheet or foil becomes more and more important. The aim of this study is to explore the effects of specimen width and grain size on tensile strength of aluminum alloy 3003 foil in uniaxial tension test. The problem was approached in two ways: firstly, by reduction of the specimen width, and secondly, by changing the grain size through annealing crystallization. The uniaxial tension tests were performed on an electronic universal material testing machine, in which a linear CCD based visual extensometer was used to measure deformation. The results show that the tensile strength decreases with decreasing specimen width or increasing surface-to-volume ratio. The tensile strength decreases with decreasing grain size for grain sizes larger than the specimen thickness.
Authors: Yong Mei Xia, You Fa Zhang, Xin Quan Yu, Feng Chen
Abstract: Metal aluminum surface can be corroded easily in acid and alkaline environment. Inspired by the self-cleaning lotus leaf, the development of superhydrophobic metal surfaces to prevent metals from corroding is enjoying tremendous popularity amongst scientists and engineers. In this work, superhydrophobic surface was obtained on aluminum foils via a facile neutral sol solution immersion process and post-modification in ethanol solution of heptadecafluoro-1,1,2,2-tetradecyl trimethoxysilane (FAS-17) solution through a hydrothermal synthesis technique. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and water contact angle measurement are used to investigate the morphologies, microstructures, chemical compositions and wettability of the produced films on aluminum substrates. The results indicated that the superhydrophobic surface, configured of a rough labyrinth structure with convexity and notch, has robust hydrophobility, which had a static water contact angle of 165.6 ± 2.8° and a water roll-off angle of <1°, exhibited long-term durability and stability in air. The present research work provides a new strategy for the simple preparation superhydrophobic films on aluminum foil for practical industrial applications.
Authors: Hajime Iwasaki, T. Mori, Mamoru Mabuchi, K. Higashi
Authors: Li Rong Zhang
Abstract: Existing household aluminum foil roll machine-controlled cutting machine, finished product rate is low,raw materials waste. To improve product quality, we have the original equipment, based on the design transformation, to reach the job performance requirements.
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