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用超声波清洗光学零件,可以显著提高生产效率,改善清洗质量。装配前,装配工人必须对光学零件的各个部位进行仔细的清擦。目前基本上停留在“转盘不离手、棉球接着丢”的传统手工清擦工艺水平上,清擦工人占有装配车间人数的60%左右,清擦工序占用了大量劳动力和工时,不能适应生产的飞跃发展。大家都知道,在装配车间对光学零件的清 相似文献
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上海超声波仪器厂新近推出的CQX40-06型超声波清洗器是一种新颖的具有高效率低噪声的清洗设备,它装有数字显示定时装置,使用简单,清洗质量好。由于该清洗器具有以上独特的性能,所以被广泛地应用于电子、机械、钟表、光学、医疗等行业。 相似文献
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<正> 据不完全统计,到目前为止,镀膜材料有一百余种,辅料有十余种。在镀膜的装料,清扫,酸洗和零件清洗过程中,这些材料和辅料可能以粉尘,蒸气及气体的形式,通过人的呼 相似文献
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上海超声波仪器厂最新研制成功的CQQ-1型超声汽相清洗机是一台新颖的清洗设备,它在超声清洗基本功能上采用了目前最理想而又广泛使用的三氟三氯乙烷及其共沸物作为清洗液,该清洗设备既具有汽相清洗特性,又有超声清洗优点,是目前世界上较流行而又普遍使用的清洗设备。它具有快捷和有效清除人工或机械难以去掉污垢的能力,因此,CQQ-1型超声汽相清洗机的问世,将成为电子元器件、精密机械、光学、 相似文献
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<正> 在光学工艺三化的高速发展过程中,辅助工序已出现了新的飞跃,抛光完工的光学零件清洗工序已采用了超声波清洗机,单件工时为5s、日产量已达到11000件左右。上胶工序采用了机械化,单件工时平均为2min30s,日产量可达到近万件。下盘采用了冷冻下盘、单件工时约为3min,日产量约为近万件。包装采用了真空吸塑包装,单件工时约为3min,日产量约为近万件。一、胶球模中频感应加热器目前,上盘时胶球模的预热,还采用古老的电炉加热。加热时间约为15~20min。或用 相似文献
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Kwang-seok Hwang Ki-hyun Lee In-ho Kim Jin-Won Lee 《Journal of nanoparticle research》2011,13(10):4979-4986
Removal of nanometer-sized contaminant particles (CPs) from substrates is essential to successful fabrication of nano scale
devices. But the cleaning limit of various current technologies stay around 50 nm. Cryogenic aerosol beam has long been successfully
employed to remove CPs down to 50 nm, and supersonic particle beam using particles smaller than 100 nm lowered the limit of
cleaning down to 20 nm size. In this study, the particle beam technique that uses nanometer-sized bullet particles moving
at supersonic velocity was improved, and successfully employed to remove contaminant particles as small as 10 nm. Ar nano-bullets
of about 20–50 nm were generated by gas-phase nucleation, and growth in a supersonic nozzle: appropriate size and velocity
of the nano-bullets were obtained by optimizing the Ar/He mixture fraction and nozzle contours. Cleaning efficiency >95% was
attained. Nano-bullet velocity was found to be the most important parameter affecting removal of contaminant particles in
the 10-nm size range. 相似文献
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本文介绍的是以丙三醇-三乙醇胺-水与基本组份,并添加适量的硫酸铝钾盐,EDTA二钠盐为澄清、沉淀剂的水基型光学玻璃高速精磨冷却液的化学作用,它不仅冷却、清洗和润滑性能好,且具有良好的化学作用;不仅对金刚石磨具的“自锐”性能好,且能保持冷却液和磨具表面清洁,为此,进一步提高了冷却液和磨具的使用性能和使用寿命,以及光学玻璃零件加工的效率和表面质量。 相似文献
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超声波提取-火焰原子吸收光谱法测定金银花中的Fe、Cu和Pb 总被引:2,自引:0,他引:2
建立了湿法和超声波提取处理样品,火焰原子吸收光谱法测定金银花湿法消解液及超声波提取液中Fe,Cu和Pb元素含量的方法.金银花中3种元素的含量Fe>Cu>Pb,硝酸作为提取剂,提取元素的溶出率的大小:Cu>Pb>Fe,回收率为85%-107%,RSD为0.6-1.0%.结果表明,超声波提取能较好地提取金银花中微量元素,元... 相似文献
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当带有光学成像探测制导系统的高速飞行器在大气层内飞行时,光学窗口与来流之间会形成复杂的凹腔绕流流场,产生气动光学效应。建立了求解超声速流场的高精度LES/RANS混合算法模型,研究了超声速流动条件下的Settles三维凹腔流动;在计算得到精确流场数据的基础上,研究了凹腔剪切层区域的光学传输效应。结果表明,凹腔流动的剪切层结构将引起光线抖动,导致严重的波面畸变,明显降低光强斯特雷尔(Strehl)比,严重影响光学传输性能,进而大大降低光学制导精度。 相似文献
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Eric Pellegrin Igors Šics Juan Reyes‐Herrera Carlos Perez Sempere Juan Josep Lopez Alcolea Michel Langlois Jose Fernandez Rodriguez Vincent Carlino 《Journal of synchrotron radiation》2014,21(2):300-314
Although the graphitic carbon contamination of synchrotron beamline optics has been an obvious problem for several decades, the basic mechanisms underlying the contamination process as well as the cleaning/remediation strategies are not understood and the corresponding cleaning procedures are still under development. In this study an analysis of remediation strategies all based on in situ low‐pressure RF plasma cleaning approaches is reported, including a quantitative determination of the optimum process parameters and their influence on the chemistry as well as the morphology of optical test surfaces. It appears that optimum results are obtained for a specific pressure range as well as for specific combinations of the plasma feedstock gases, the latter depending on the chemical aspects of the optical surfaces to be cleaned. 相似文献
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P. Pasquet R. del Coso J. Boneberg P. Leiderer R. Oltra J.P. Boquillon 《Applied Physics A: Materials Science & Processing》1999,69(7):S727-S730
Laser cleaning experiments exhibited a higher cleaning efficiency of the laser cleaning upon application of electrochemical potential on an oxidised iron surface. The objective of this study is to clarify the role of such an electrochemical control on cleaning efficiency. Therefore a study by optical spectrometry at normal incidence in the relevant conditions was performed. From these measurements the optical parameters n and k were deduced. While n is mainly not affected, k changes for a factor of 10 upon application of an electrochemical potential. These results explain the differences in laser cleaning efficiency due to the modified absorption length. 相似文献
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气动光学的研究中,关联方程(linking equation)是关联湍流力学量与光学量的一个重要的方程.但是,基于模型简化的关联方程在亚声速低速流场的应用中通常忽略权重函数对波前方差估计精度的影响.本文在纳米粒子示踪平面激光散射技术获得超声速混合层流场密度数据的基础上,应用关联方程计算超声速混合层的流向波前方差,并进行误差分析.结果表明:基于关联方程估计的流向波前方差与直接对密度场的积分计算结果具有较好的一致性;在适当地定义相干长度、密度脉动协方差高斯模型近似的基础上,分析了权重函数对关联方程计算精度的影响,指出了权重函数对关联方程在超声速流场密度高度相关区域中应用的必要性.研究的开展对于拓展关联方程在高速流场中的应用具有一定指导意义. 相似文献
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I. A. Fedorov A. A. Belyaev S. V. Konkin Yu. P. Maksimov V. K. Rebone M. A. Rotinyan O. B. Danilov A. P. Zhevlakov 《Optics and Spectroscopy》2000,89(6):963-966
Spatial-energy, spectral, and optical characteristics of kilowatt supersonic cw HF chemical lasers of self-contained type with three-jet nozzle arrays using nozzle-nozzle-injector and nozzle-nozzle-nozzle configurations were experimentally studied. It was shown that such nozzle arrays enable one to form an active medium as long as 12.5 cm with a high optical quality. In a laser with a wide-aperture stable cavity, a laser beam with a nearly square cross section 11 × 10 cm in size was formed. 相似文献
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本文主要综合比较了几种光学元件清洗方法的优缺点,得出了激光清洗技术是目前最为理想的清洗技术的结论.同时,我们对激光清洗技术的机理和发展前景作了较为详尽的说明. 相似文献
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研究了不同几何外形参数对直线分段扩开型氧碘化学激光器(COIL)扩压器性能的影响,实验结果表明:光腔上下壁扩开全角8°时,选取4°超扩段扩散角可获得较好的压力恢复和隔离光腔流场的能力;超扩段增加2 mm竖隔板可降低光腔后部壁面静压,且截止反压提高约12%;在相同腔压下,10°截角唇口的截止反压比直角唇口和1/4圆弧唇口截止反压高出约7.6%;超扩段入口四壁增加人工粗糙带能明显改善光腔壁面静压的分布,并有效提高扩压器效率。 相似文献