镀银不锈钢工件机加工方法

镀银不锈钢工件机加工方法成都市２９１信箱１０３分箱（６１０００５）杜德福在机械加工中，我们通常会遇到各种材料和结构的工件，超出了机床设计加工能力，需要改进或创新加工工艺。比如镀银不锈钢，这种不锈钢材质韧性好，机加工时易粘刀，比起碳钢的加工困难要多些；...     

钼片镀银新技术

介绍了一种在钼片上镀银的新工艺，提供了镀银的工艺条件和相关参数；所镀银层与钼片基体结合牢固，镀银产品各项性能良好。新工艺操作简单，实用性强，在电子材料等方面将有广阔的应用前景。     

镀银保持架变色分析

为提高轴承的自润滑能力,延长轴承使用寿命,车制保持架采用镀银方法进行表面化学处理。镀银质量的好坏直接影响到轴承质量。     

基于时间测定的镀银函数式工时定额标准研究

为改进镀银工时定额制定标准,文中设计出一种基于时间测定的镀银函数式工时定额标准的建立方法,制定了适合本企业的镀银工时制定函数标准.在制定本标准的过程中,探索出适合表面处理函数式工时定额标准的建立方法.     

硅青铜保持架的镀银工艺

分析硅青铜(QSi1-3)保持架镀银的优点和技术难点,详细介绍了硅青铜保持架的镀银工艺流程和技术参数,并对保持架镀银后的表面质量、镀银层厚度和结合力进行了检测分析,确保了镀银质量满足工艺要求。     

铜波导镀银层厚度的分析与研究

研究铜波导镀银层厚度对电性能和耐蚀性的影响,通过理论计算和检测,确认电性能满足要求,通过湿热试验和盐雾试验研究铜波导镀银的耐蚀性,分析镀层厚度对试样耐蚀性的影响。基于试验结果,为了达到所需镀银层厚度,制定工艺改进措施,兼顾了电性能和耐蚀性,提高了可靠性。     

超细镀银铜粉的制备及其性能研究

采用置换反应法制备镀银铜粉,通过使用螯合萃取剂RE608一次性制得具有常温抗氧化能力的镀银铜粉;研究了RE608的用量、反应温度、反应时间和AgNO3用量对镀银铜粉的抗氧化性和煅烧温度对导电性的影响.结果表明：试验条件下,RE608用量越多越好,从成本考虑使用量以40mL为宜;反应温度以80℃为佳;反应时间以20 min为宜;AgNO3浓度越小越好.     

回收氰化镀银废液中Ag^＋,CN^—的新方法

本文根据溶液中络合平衡和沉淀平衡的理论,提出了用硝酸银以二氰合银酸银的形式回收氰化镀银废液及清洗回收液中银离子和氰根的方法。对回收过程进行了探讨,介绍了硝酸银用量的确定方法,回收产物可直接回槽使用。本回收法极大地减少了氰化物处理量,使氰化镀银的回收取得最大的经济效果。     

银甲武士——1：16 Toy Tractor Times 23周年镀银纪念版本IH 1066

这次带给大家一款非常罕见的拖拉机模型,与之前与读者分享的模型不同,这款1：16 IH 1066全身镀银,是ToyTractor Times网站成立23周年时,委托ERTL公司定制的镀银纪念版本模型,全球限量36部,美国市场价格约为1 600美元。原来只是以为中国人喜欢镀金镀银产品,如很多进口品牌的轿车国产化后,车窗边框、腰线和前脸等轮廓部位都要加很多亮银色的镀铬饰件。后来随着收藏拖拉机模型数量越来越多,才发现美国人也很喜欢镀金镀银的东西,如各大农机展会或者农机模型展会,用做展示的拖拉机模型都会采用镀金或者镀银版本。因为这些特别版本的模型产量都非常少,对模型制作工艺要求更高,坏件率也比一般模型要高很多,所以成为众多收藏迷竞相追捧的对象。     

不锈钢关节轴承球面镀银工装改进

通过对不锈钢关节轴承球面镀银工装的改进,消除了原工装产生的条纹镀层和脱皮现象,达到了局部镀银的质量要求,提高了生产效率,减少了废品损失、材料消耗和劳动强度。     

照相镜头彩色还原增透膜的作图设计法

本文分析了影响照相镜头色贡献指数的主要因素,着重地研究了增透膜在改善照相镜头彩色还原性能方面所起的重要作用。根据国际标准,指出了照相镜头色还原性的评价指标,论述了照相镜头彩色还原增透膜的设计思想,建立了一种实用的设计方法——作图设计法,并且通过实例介绍了这种方法的实际应用。     

Colour display of video information in scanning electron microscopy: Principles and applications to physics,geology, soil science,biology, and medicine

From a colourimetric point of view, colour has two independent aspects: brightness and chromaticity. In black and white images, all elements are of the same chromaticity and can be distinguished only by brightness contrast. In the colour image, elements of the same brightness can be discriminated by chromaticity (colour) contrast. Generally, colour image elements can be discriminated both by brightness and by chromaticity. As the human eye can distinguish a number of hues two orders of magnitude larger than the number of grey levels, it is safe to say that the colour image is much more informative than the black and white image. There are some peculiarities of the colour image and methods of its formation in SEM. Two principles of image formation are used. The first consists of the formation of a real colour image in the cathodoluminescence mode. In this case the colour of an image element is determined by the spectrum of the luminescence emission excited in the corresponding point of an object by the electron beam. The second principle is that of colour coding (quasicolour, pseudocolour), when a video signal in colour (either digital or analog) corresponds to a video signal (amplitude, frequency, phase, etc.) produced by any mode in the scanning electron microscope. We present a review of the methods of colour display of video information in scanning electron microscopy and their applications to physics, geology, soil science, biology, and medicine.     

UV365分光光度计与微机联机测色系统

UV365分光光度计是一台双单色仪研究型仪器。本文介绍了分光光度计与微机联机,组成的高精度颜色测量系统。详细讨论了系统接口的硬件和软件设计,以及色度参数处理。该系統能测量样品在A、B、C和D_(65)等标准照明体下的色度坐标和四种颜色空间中的色度参数。     

现代机床色彩设计的联想及应用

对现代机床色彩设计的实例进行分析，提出色彩的联想及机床色彩设计的应用。     

Colour micrographs for backscattered electron signals in the SEM

The backscattered electron (BSE) signals detected by a pair of detectors in the SEM can be used for producing colour micrographs. The image corresponding to any of these signals, or to a mixture of these signals, is assigned one primary colour and two or more of these images are superimposed onto the same colour frame. In addition, the mixing of signals from the gaseous detector device together with their use for colour imaging is also examined.     

A comparison between the use of a high-resolution CCD camera and 35 mm film for obtaining coloured micrographs

In light microscopy, colour CCD cameras are now capable of generating image data sets that contain more information than can be captured with slow 35 mm colour reversal film. The resolution of colour CCD cameras with a high density of sensor elements ( 3300 × 2200 per channel of colour) is equivalent to that of slow 35 mm colour film over typical fields of view for objectives with a wide range of magnifications and numerical apertures. The contrast that can be achieved in images derived from the data sets obtained with colour CCD cameras far exceeds that found with film and can exceed that of human vision. Finally, the data sets collected with high-resolution colour CCD cameras are capable of being displayed at a wide range (four-fold) of different magnifications easily and interchangeably. Consequently, the combination of a data set that describes a relatively large field of view with one or two data sets that describe specific details taken with an eight-fold increase in magnification are all that is necessary to describe the salient features of the vast majority of stained specimens examined with transmitted light microscopy.     

Area‐preserving colour coding of inverse pole figure domain

The inverse pole figure (IPF) map is a routinely displayed output in microtexture studies, interpreted using the attached colour legend/diagram. An area‐preserving relation between the IPF domain and RGB colour domain has been developed here, and the resultant IPF colour diagrams of different crystal point group symmetries are presented.     

Accurate representation of interference colours (Michel–Lévy chart): from rendering to image colour correction

Here a work flow towards an accurate representation of interference colours (Michel‐Lévy chart) digitally captured on a polarised light microscope using dry and oil immersion objectives is presented. The work flow includes accurate rendering of interference colours considering the colour temperature of the light source of the microscope and chromatic adaptation to white points of RGB colour spaces as well as the colour correction of the camera using readily available colour targets. The quality of different colour correction profiles was tested independently on an IT8.7/1 target. The best performing profile was using the XYZ cLUT algorithm and it revealed a ΔE₀₀ of 1.9 (6.4 no profile) at 5× and 1.1 (8.4 no profile) at 100× magnification, respectively. The overall performance of the workflow was tested by comparing rendered interference colours with colour‐corrected images of a quartz wedge captured over a retardation range from 80–2500 nm at 5× magnification. Uncorrected images of the quartz wedge in sRGB colour space revealed a mean ΔE₀₀ of 12.3, which could be reduced to a mean of 4.9 by applying a camera correction profile based on an IT8.7/1 target and the Matrix only algorithm (ΔE₀₀ < 1.0 signifies colour differences imperceptible by the human eye). ΔE₀₀ varied significantly over the retardation range of 80–2500 nm of the quartz wedge, but the reasons for this variation is not well understood and the quality of colour correction might be further improved in future by using custom made colour targets specifically designed for the analysis of high‐order interference colours.     

Developing a 3D colour image reproduction system for additive manufacturing of facial prostheses

In this study, a new 3D colour image reproduction system is proposed for the automated and accurate additive manufacturing of soft tissue facial prostheses. A framework of 3D colour image reproduction was defined and a protocol for each sub-process was developed for this specific application. Colour management processes were developed and integrated into the proposed 3D image reproduction system; colour profiles for both the 3dMD photogrammetry system and the Z Corp Z510 3D printer were established utilising conventional colour reproduction techniques for 2D images. The soft tissue prototypes of both nose and ear prostheses were produced using the proposed system. The quality of prostheses was evaluated. The results show that the protocol used in the 3D manufacturing process was capable of producing accurate skin colour with fine textures and 3D shape, with significant savings in both time and cost.     

基于彩色条纹投影术的三维形貌测量

物体表面三维形貌数据的获取在智能制造、航空航天、文物保护、医疗卫生、远程教育等领域有着广泛的应用。三维形貌数据的获取受限于系统硬件的性能,特别是现有数字投影系统的投影速度,无法快速测得物体面形的三维形貌。彩色成像和投影系统的出现,为并行多颜色通道三维成像系统提供了新的研究方向。详细综述了基于彩色条纹投影术的三维形貌数据测量研究的现状。具体包括彩色条纹投影术的基本原理、彩色条纹调制和解调相关技术、三维成像系统的标定、以及未来的研究方向。接着给出几个利用彩色条纹投影术获取物体表面三维形貌和彩色纹理的实例。为彩色条纹投影术测量物体表面三维形貌数据提供了详尽的综述,并指明了未来潜在的研究新方向。