皮尔金顿公司浮法玻璃的质量控制

质量因素与产品范围浮法玻璃质量项目包括:尺寸、平整度、厚薄差、可切性、畸变度(反射与透射)、缺陷(单位面积中的熔化与成型缺陷)、磨伤、包装到用户的整洁度.这些项目适用于三大类产品:①出退火窑产品(LES)包括面积为4.5～18m~2的透明平板玻璃,防阳阿光玻璃、反射浮法玻璃及光学浮法玻璃等;②入库的标准片(SSS).通常为2、3、4毫米厚、玻璃带?～?宽的透     

电浮法玻璃光学特性的理论分析

电浮法玻璃的一些特殊光透射及光反射性能,是由于铜、铅胶体粒子悬浮在玻璃表面上的结果.依据光散射和薄膜理论,对这些光学性质给出了满意的解释.     

信箱

问:为什么搪瓷色釉不能象原料一样调合? 答:一般根据下述两种原理来度量某种颜色的量:1.颜色是与光照射在物体后其反射光的光谱特性有关。由于物体对可见光谱区内各波段的吸收和透射光量不同,因此反射光在可见光谱区域内各波段的反射光量也不同。对不透明的物体而言,其散射的反射光将缺少某一部分的光谱,即吸收光的颜色,     

我国浮法玻璃外观质量状况

通过对浮法玻璃国家监督抽查原始数据的分析,得出我国浮法玻璃产品的整体状况,其中包括光学变形的入射角范围,气泡、夹杂物和污斑的大小和数量分布,微缺陷的数量以及与国外产品的差距.     

一类用于清洗的新型超声波振子

介绍了一类新型超声波振子——管形振子及推拉换能器,比较了二者的结构,分析了这类振子的工作原理,并对其辐射声场进行了计算。结果表明这类新型超声波振子结构简单,辐射效率高,辐射声场均匀,安装方便,可用于超声清洗等大规模液体处理领域,特别适用于管罐类物件的清洗。     

提高浮法玻璃光学变形角过程分析

分析了提高浮法玻璃光学变形角的过程,总结了影响浮法玻璃光学变形角的因素.     

SiWN/SiWON双吸收层薄膜的光吸收性能（英文）

采用磁控溅射法在玻璃基底上制备了氮化物SiWN和氮氧化物SiWON层。通过拟合反射光谱和透射光谱数据,分别获得两个吸收层的折射率和消光系数。SiWN层的折射率大于0.75,消光系数大于1.25并且随着波长的增长而增加,表现出金属性质。SiWON层具有低的消光系数(0.5～1.5),表现出半导体性质。根据SiWN和SiWON单层的光学常数,模拟得到理论吸收率为0.901的SiWN/SiWON双吸收层。根据拟合得到的参数,制备了吸收率为0.895的双吸收层。     

超白浮法玻璃与普通浮法玻璃光谱性质的对比分析

选取相同厚度的超白浮法玻璃和普通浮法玻璃,采用紫外可见近红外分光光度计对两者在200～2500 nm波长范围的光谱透射率、反射率进行测定.试验结果表明,超白浮法玻璃的光透过性高于普通浮法玻璃,光吸收性远低于普通浮法玻璃,光反射性两者相差不大.分析原因主要为两者中氧化铁等氧化物含量不同导致光谱性质表现差异.     

多功能简谐振动演示仪研究

利用垂直弹簧振子、水平气垫式弹簧振子、旋转矢量法简谐振动合成装置、单片机控制的发光二极管简谐振动演示装置设计了一台多功能简谐振动演示仪,能演示和合成几种不同情况下的简谐振动过程,演示仪可操作性强,演示效果好,经使用能对简谐振动进行很好的演示和合成,具有推广价值.     

粘结层厚度对叠层压电振子的影响分析

利用压电振子采集环境振动能量为低功耗电子产品供能是近年研究的热点,而叠层压电振子中,粘结层厚度对压电振子的发电能力以及压电振子的抗剪性能均有较大影响。文中针对悬臂梁叠层压电振子,利用ANSYS软件仿真分析了其粘结层厚度不同时对于压电振子的输出电压、固有频率以及抗剪性能的变化关系。结果表明,在相同条件下,随着粘结层厚度的增加,压电振子的开路电压有一定程度的减小、基频基本成线性增加,但其结合面上的切应力却有较大程度的减小(最大为40%)。     

Improving the optical properties of float glass

The nature of the defects that cause optical distortions in glass is analyzed. It was found that 70% of the optical defects in float glass is due to streak formation in the melt bath. Methods were developed for manufacturing float glass that increase its quality with respect to the optical indexes.     

浮法玻璃品种改换的工艺技术研究

运用质量守恒定律和浮法玻璃成形理论,对影响浮法玻璃改换品种的工艺条件进行研究,提出在改换品种时拉引量、主传动、拉边机等关键参数的设计操作原则,通过科学设计改品种程序,实现不同品种间的平稳快速过渡。     

Improvement of the Float-Process Technology

The problems of production of float glass are discussed. The possibilities of shortening the duration of conversion from one type of glass to another on the same production lines, of improving the optical parameters of float glass etc. are demonstrated. The developed techniques make it possible to improved the quality of glass to increase the production volume and expand the product range.     

Color stabilization in bulk-tinted glass

Amethod has been developed for stabilizing the optical characteristics of sheet float glass by introducing specially selected colorants into the batch, whose quantity is determined from the difference between the light transmission of two samples. The difference in the transmission of the samples (“the delta”) is determined for each wavelength, and a plot is constructed for the wavelength. Based on the peaks in the delta curve it is possible to identify differences in the transmission of glass samples of different thickness. __________ Translated from Steklo i Keramika, No. 8, pp. 3–4, August, 2006.     

Methods for Improving Optical Parameters of Float Glass (A Review)

The effect of the processes of discharge and spreading of glass melt in the melt tank on optical parameters of float glass is considered. The existent design and technological solutions for leveling the temperature gradient in melted glass flow, which is one of the main factors in the formation of optical distortions, are described.     

Optical Properties of Silver Halide Photochromic Glasses Doped with Cobalt Oxide

Photochromic glasses having composition (SiO₂)₄₅(B₂ O ₃)₃₅(Al₂O₃)_7.5(Na₂O)_12.5(AgBr), (Cu₂O) doped with (CoO) _x , in which, x = 0, 0.006, 0.02 and 0.07 g were prepared using the conventional melt technique. The amorphous nature of these glass samples was confirmed using X-ray diffraction analysis at room temperature. The absorption measurements in the infrared region of the spectrum were recorded in the wave number range (4000–400) cm^?1. Spectral reflectance and transmittance at normal incidence of the prepared glass samples were recorded with a spectrophotometer in the spectral range 200–2500 nm. Experimental and theoretical densities of the prepared glass samples were measured, calculated and compared. Analytical expressions were used to calculate the real and imaginary parts of the refractive indices. Dispersion parameters such as: single oscillator energy, dispersion energy, average oscillator wavelength, and Abbe’s number were deduced and compared. Absorption dispersion parameters such as: optical energy gap for direct and indirect transitions, Urbach energy and steepness parameter were calculated. Effects of doping with cobalt oxide CoO as a transition metal on linear and predicted nonlinear optical parameters were investigated and interpreted. Experimental results indicate that there is an optimum concentration of cobalt doping around 0.006 g. The optical band gap decreases with increasing doping and causes an increase in nonlinear optical parameters. Doping with cobalt oxide improves the linear and nonlinear optical properties of the prepared glasses.     

Structural,electrical, and linear/nonlinear optical characteristics of thermally evaporated molybdenum oxide thin films

Homogeneous thin films of Molybdenum oxide (MoO₃) were grown on quartz and glass substrates using the thermal evaporation method. XRD results showed that the MoO₃ powder has a polycrystalline structure with an orthorhombic crystal system whereas the MoO₃ thin films have amorphous nature. SEM images showed that the MoO₃ thin films have a nearly uniform surfaces with worm-like shape grains. The film thickness influences on the linear and nonlinear optical characteristics of MoO₃ thin films that were examined using spectrophotometric measurements and from which, the linear optical constants of the MoO₃ thin films were estimated. The electronic transition type was determined as a direct allowed one. The values of the optical band gap were obtained to be in the range of 3.88–3.72 eV. The dispersion parameters, third-order nonlinear optical susceptibility, and the nonlinear refractive index of the MoO₃ thin films were determined and interpreted in the light of the single oscillator model. The temperature dependence of the DC electrical conductivity and the corresponding conduction mechanism for the MoO₃ films were investigated at temperatures ranging from 303 to 463 K.     

超白浮法玻璃生产的工艺控制

就超白浮法玻璃生产的工艺特性及控制结合案例进行了说明,特别指出必须按照超白浮法玻璃的特性进行工艺控制,才能生产出优质的浮法超白玻璃。     

悬挂式全自动拉边机在超薄电子玻璃生产中的应用

超薄浮法玻璃的生产虽然同属浮法玻璃的生产,但在生产工艺参数上与一般浮法玻璃的生产却有着很大区别,2mm以下的超薄玻璃薄如蝉翼,其成形极难控制,对拉边机的控制要求很高。悬挂式全自动拉边机用于超薄浮法电子玻璃生产的成形段,其作用是依靠拉边机最前端的拉边轮牵引浮在锡槽液面上的玻璃带前进,并通过调节拉边轮的线速度及其水平偏角、平面倾角等,以达到控制玻璃带厚度及稳定玻璃板宽度的目的。悬挂式全自动拉边机具有增加产品品种、减少改板时间、提高玻璃质量等优点,可以为超薄浮法玻璃商品化生产提供强有力的保证。     

浮法玻璃熔窑后期熔化部压力波动及对策

针对浮法玻璃熔窑运行后期熔化部压力波动形成的原因及对策,做了较为详尽的论述.工艺参数的控制方法必须针对浮法玻璃熔窑运行后期的特点,才能保证工艺制度的稳定.