超白浮法玻璃熔制工艺探讨

超白浮法玻璃是在普通浮法玻璃基础上研制出的低铁、高透过率玻璃,由于含铁量的降低,玻璃的吸热性能和透热性能发生了较大变化,从而对玻璃的熔制过程造成一定影响。通过对比超白浮法玻璃和普通浮法玻璃在熔制过程中的不同,对超白玻璃的熔制工艺进行了讨论分析。     

浮法玻璃沾锡的研究

浮法玻璃沾锡仍然是影响目前我国玻璃行业浮法玻璃产、质量的主要因素之一.国内对浮法玻璃沾锡还未开展系统的研究.本文通过对我国自行设计的两种锡槽中玻璃沾锡的较长时间生产观察和实验,探讨了浮法玻璃沾锡的形成原因,讨论了解决浮法玻璃沾锡的方法.     

玻璃原片掰边器的改进

玻璃原片掰边器的改进。刘志海（秦皇岛浮法玻璃工业性试验基地）目前，我国玻璃工业的面貌发生了根本变化，浮法玻璃生产线相继建成投产，浮法玻璃产量约占平板下玻璃总产量的５０％。我国大部分浮法玻璃生产线的玻璃原片自然边的掰断均采用杠杆双轮掰边器，然而这种掰边...     

提高浮法玻璃化学稳定性的研究与进展

介绍了玻璃风化的(发霉)的机理,列举了水、酸、碱对浮法玻璃腐蚀的的影响,分析了国外浮法玻璃防霉技术的现状,展望了防玻璃风化的发展趋势,提出了改善玻璃表面化学稳定性的方法.     

浮法玻璃下表面渗锡的影响因素

浮法玻璃下表面渗锡一直是影响国内浮法玻璃发展的主要难题,且随着玻璃技术的不断提高与创新,如全氧燃烧技术的应用、超白玻璃的生产以及在线镀膜的使用,玻璃渗锡的影响因素更加复杂多样化。本文简要地介绍了浮法玻璃下表面渗锡的影响因素及解决办法。     

TRIZ创新理论在工作的实际应用——纯氧助燃技术在浮法玻璃熔窑上的应用研究

通过TRIZ创新理论,对传统玻璃行业节能减排、提高玻璃质量进行创新性研究。纯氧助燃技术的开发应用,改变了传统浮法玻璃窑炉的火焰特性,大大地降低了玻璃熔窑能耗及玻璃窑炉烟气中的NOx排放,提高了玻璃质量,对我国浮法玻璃技术的提高具有现实意义。     

超白浮法玻璃熔化温度与黏度特性及其对液流影响的分析

由于超白玻璃的铁含量低,因此与普通浮法玻璃存在较大的差异.从超白浮法玻璃的温度、黏度特性,及其对熔窑内玻璃液流的影响方面进行分析,计算玻璃液温度、黏度与深度之间的变化关系,并结合窑内液流流动规律和实际生产的数据,提出了超白玻璃液流的特点和生产中需要注意的问题,为超白浮法玻璃的生产提供了参考.     

双玻组件用背板玻璃材料的性能分析

随双面组件市场占有率的增加,光伏背板使用量提升,玻璃成为背板材料的最佳选择,通常使用超白压延玻璃或浮法玻璃作为双玻组件用背板材料。通过对两种玻璃的力学性能及电性能进行实验研究,发现随着厚度的增加,玻璃的抗冲击强度、抗弯强度增加,作为组件背板使用时,其透过率、组件发电功率总体呈下降趋势;相同厚度下,玻璃的抗冲击强度表现为:超白压延玻璃浮法玻璃,抗弯强度、组件正面发电功率基本相同,透过率、组件背面发电功率表现为:超白压延玻璃浮法玻璃,浮法玻璃作双玻组件用背板玻璃使用时性价比较高。     

“洛阳浮法玻璃工艺”的诞生与创新发展

<正>"洛阳浮法玻璃工艺"是我国拥有自主知识产权,在世界玻璃工业中与英国皮尔金顿浮法、美国匹兹堡浮法并驾齐驱的世界三大浮法工艺之一。自上世纪60年代初开始,由主要发明单位建材科学研究院、秦皇岛玻璃研究所、杭州新材院、秦皇岛玻璃设计院和株洲玻璃厂、洛阳玻璃厂一起经历了艰难的探索,用智慧和汗水让"洛阳浮法玻璃工艺"在中华大地上诞生,在近50年的风雨砥砺中使该技术得到了不断的创新发展,先后自主创新研发了超厚和超薄浮法玻璃技术、大规模浮法玻璃技术、在线镀膜改性技术、浮法特种玻璃等,成功为我国玻璃工业的发展壮大竖起了一座雄伟的丰碑。     

浮法玻璃原片质量优化攻坚成果及应用

随着玻璃用途的拓展,对玻璃质量要求越来越高,国内很多生产线进行技术改造升级,提升玻璃质量水平.针对南宁浮法玻璃有限责任公司生产线对玻璃质量的要求,通过对原料配料、窑炉、锡槽、工艺和生产控制系统等多方面进行研发和技术优化,以解决浮法玻璃本体缺陷和提高智能化水平为突破口,为生产高质量玻璃原片提供了基础条件和必要支撑.经过改造后在700t/d浮法玻璃生产线上应用,产品质量明显提高,单耗和排放下降,整体达到了国内先进水平.     

玻璃钢化季节性调压数值模拟

建立了风栅中玻璃的冷却模型,数值模拟玻璃冷却的温度和应力变化规律,反演了不同季节风温时的合理匹配风压。结果表明,在玻璃淬冷过程,约3 s时玻璃表面拉应力达到最大,若该应力大于玻璃此时的抗拉强度,玻璃将破裂。此后玻璃从外到内降温速率逐渐减小,在约15~17 s时玻璃表层受内部影响减弱,表面应力趋于稳定。与钢化玻璃表面应力测试结果相比,数值模拟结果略小,但相对误差不超过5%。随冷却风温降低,玻璃钢化所需的风压逐渐减小。在玻璃钢化程度接近的情况下,风压随风温降低近似线性减小,钢化风压调节量与环境温度变化量的相关系数为0.103 kPa/K。     

Efficacy of zinc salts to protect glass against atmospheric alteration. Part II: Possible passivation mechanisms

To investigate the origin of the protection effect of zinc salts against glass atmospheric alteration, the speciation of Zn²⁺ ions on glass according to the deposit protocol and the Zn²⁺ surface concentration, and its change over time, was investigated in the light of the respective performances of the treatments. In that respect, a combination of various characterization methods of the glass surface and near-surface was used before and after aging experiments (temperature, relative humidity (RH) control) of the Zn-treated glass. Different Zn-species could be observed on the surface of the treated glass: chemisorbed species, physisorbed species and precipitated hydroxide phases, their respective distribution being highly dependent on the nature of the treatment and on the Zn²⁺ surface concentration. GI-XAS (Zn K-edge) and ToF-SIMS experiments pointed out the conversion by thermal activation of these surface species into chemisorbed species inserted in the glass network in the near-surface. The chemisorbed species appear to be the most effective ones for the glass protection, possibly by making the surface less soluble, less hydrophilic and even by acting as a diffusion barrier.     

ZrO2对高硼硅玻璃高温粘度和表面张力的影响

高硼硅玻璃由于熔化温度高,对耐火材料侵蚀严重,ZrO2溶解到玻璃中后使其高温粘度和表面张力发生变化,是产生玻璃缺陷的重要原因之一。通过在母体玻璃中引入少量ZrO2,采用旋转粘度法测试玻璃的高温粘度,采用静滴法测试玻璃的高温表面张力。结果表明,随着含量的增加,ZrO2对玻璃在1530℃以上的粘度影响不大,但可使1530℃以下的粘度有较大提高。玻璃的高温表面张力随着ZrO2含量的增加单调递增,随着温度的升高而降低。     

Crystallization of Copper Metaphosphate Glass

The effect of the valence state of copper in copper metaphosphate glass on the crystallization behavior and glass transition temperature has been investigated. The crystallization of copper metaphosphate is initiated from the surface and its main crystalline phase is copper metaphosphate (Cu(PO)₃), independent of the [Cu²⁺]/[Cu_total] ratio in the glass. However, the crystal morphology, the relative crystallization rates, and their temperature dependences are affected by the [Cu²⁺]/[Cu_total] ratio in the glass. The crystal formed in the reduced glass is oriented and needleshaped and less aligned at higher crystallization temperature. On the other hand, the totally oxidized glass crystallizes from all over the surface. The relative crystallization rate of the reduced glass to the totally oxidized glass is large at low temperature, out small at high temperature. The glass transition temperature of the glass increases as the [Cu²⁺]/[Cu_total] ratio is raised. This dependence may be used to explain the relative crystallization rates. It is also found that the atmosphere used during heat treatment does not influence the crystallization of the reduced glass, except for the formation of a very thin CuO surface layer when heated in air.     

浅议玻璃窑炉的温度控制

阐述了玻璃熔化温度控制的重要性;介绍了玻璃熔化温度制度,玻璃液流和泡界线在玻璃熔化过程中的作用与控制要求;重点介绍了温度测量与测量仪表,温度监控技术和窑炉温度计算机控制技术;强调了发展和应用先进的电气自动化控制系统,是提高玻璃产品质量,创企业品牌,引领现代化工业前进方向的重要途径。     

玻璃熔窑温度的模糊控制算法和实现

讨论玻璃熔窑生产特点 ,提出适合玻璃熔窑温度的自整定模糊PID控制方案 ,详细研究模糊控制器在温度控制中的应用。实际运行结果表明 ,该方案是合理有效的     

Simplified Mathematical Model Simulating Heat Transfer in Glass-Forming Molds

Heat transfer in glass-forming operations depends on many factors, e.g. the properties of the glass, heat-transfer coefficients at the glass/mold and mold/air interfaces, the characteristics of the mold material, and the glass/mold contact time. Using a computer model developed for one-dimensional heat flow, the influences of these factors were calculated. The heat-transfer parameters, which were analyzed individually, include e.g. the glass surface temperature, the peak inner mold surface temperature, the quantity of heat transferred from glass to mold during a steady-state cycle, and the amplitude of mold surface temperature oscillation at steady state. Comments are given on the significance of the results.     

Performance of floating cum tilted-wick type solar still with the effect of water flowing over the glass cover

A simple transient performance of floating cum tilted-wick type solar still has been presented by incorporating the effects of water flowing over a glass cover, heat capacity of tilted-wick water surface and floating-wick water surface. Explicit expressions for flowing water, glass, tilted-wick water surface and floating-wick water surface temperature and efficiency of the system have been derived. Numerical calculations have been carried out for a typical day in the month of March 2004. The relative standard deviations between the numerical and experimental results of different temperature components of the proposed still have been found. The results indicate that the relative standard deviations between theoretical and experimental results are less than 8% (glass cover), 2% (tiltedwick water surface), 1% (floating-wick water surface) and 2% (flowing water at the lower end of the glass cover) an average for the working hours of the day. Moreover, based on the numerical results, the following conclusions have been drawn: (i) glass cover temperature decreases significantly; (ii) the effect of water flowing over the glass cover has a fascinating effect on the production of distillate output during peak sunny hours; (iii) water flow rate of 1.5 m/s is optimum, and beyond it the efficiency decreases. Experimental investigations have been performed at Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore, India.     

稀释风在浮法玻璃流道玻璃液温度控制中的应用

简述了浮法玻璃流道玻璃液温度辅助控制原理,介绍了稀释风对流道玻璃液温度辅助控制的几种方式,并比较了各种辅助控制方式的控制效果。     

热处理对离子交换高碱铝硅酸盐玻璃性能的影响

将离子交换高碱铝硅酸盐玻璃在340~460℃热处理1 h,研究热处理对离子交换玻璃性能的影响。测试了热处理后玻璃的表面应力、应力层深度、强度和硬度。结果表明:随着热处理温度的升高,玻璃的表面应力及强度明显下降,应力层深度有所增加,而硬度略微下降。