我国首条浮法玻璃退火窑大型辊道加工生产线投产

最近,一条长180m,宽24m的制造浮法玻璃退火窑辊道的生产线在江苏泰县冶金铸管厂建成投产。这种国内生产的大型退火窑辊道配件,现已经过国家建材局及冶金部门的有关专家检测和鉴定,各项技术指标均达到国际同类产品先进技术水平。 为解决我国浮法玻璃生产线退火窑辊道,江苏泰县冶金铸管厂科技人员在有关科研单位     

退火工段伸缩缝处退火窑辊道地轴的处理

浮法退火窑辊道是浮法玻璃生产线关键的三大热工设备之一,直接影响到玻璃产品的性能和质量。但由于其传动的稳定性和连续性除了受到自身因素影响外,还受到其它因素的影响,如车间地面存在的伸缩缝带来的危害和影响,消除外界对此设备性能的影响也是至关重要的。该文介绍了在浮法玻璃生产线退火工段车间地面伸缩缝处浮法退火窑辊道的几种处理结构及其使用条件。     

石棉辊

天津市石棉瓦厂为天津市玻璃厂从比利时引进的格法玻璃生产线退火窑耐热辊道国产化而研制的石棉辊,具有高强耐热之特点。已于1991年5月20日通过了市建材局的鉴定。该产品是石棉增强耐火材料,属非烧结的耐火材料、是由石棉和其它耐火材料经特别工艺处理而成的,具有如下特点:在1000℃左右     

浮法玻璃生产用石棉辊通过专家评议

由青岛市第二石棉制品厂研制的浮法坡璃生产用石棉辊于1992年9月2日在青岛通过了由国家建材局组织的专家评议。该石棉辊是用于浮法玻璃生产线的退火窑中,是托送平板玻璃在退火窑中消除应力的重     

浮法玻璃退火窑

在苏联的一家工厂中新建一条浮法玻璃退火窑。该窑正在试安装中,其总宽为5.6米,长为112.6米,进行热处理的玻璃带宽为3.5米,玻璃厚度为2—6毫米,生产能力为4500吨/周。该窑采用电加热,备有辊式炉底。玻璃进入退火窑时的温度为600℃,它在不锈钢及石     

精密超白太阳能玻璃退火窑

阐述了超白太阳能玻璃生产退火窑温度制度的重要性,对退火窑的热工控制及退火窑的密封保温进行了详细说明。     

浮法玻璃掰边辊道结构分析

浮法玻璃由于其产品的规格尺度不同,需要对玻璃进行切割、横向掰断、加速,然后进行掰边。文中就浮法玻璃生产线上的玻璃掰边辊道作了简单介绍,并着重分析了一种掰边辊道——新型双片掰边辊道的结构形式。     

浮法玻璃生产退火窑用浮法石棉辊的改进与使用

浮法玻璃生产退火窑用浮法石棉辊的改进与使用于永浩林相俊（青岛第二石棉制品厂）在浮法玻璃生产线中，玻璃熔液自窑炉出来后，经锡槽进入退火窑，温度虽然已降低了，但根据玻璃从高温到低温温度不能降的太快和太低，而必须逐步降低，否则容易造成玻璃原板炸裂这一特性，...     

平板玻璃退火窑保温的探讨

窑体的保温性能是决定退火窑性能的重要因素。该文针对退火窑保温性能的重要性、保温材料的选择和填充方法进行了阐述。     

平板玻璃退火窑保温区侧墙降低热传导方案设计

保温区窑体的保温性能是退火窑的关键性能,直接影响退火窑整体性能。两侧侧墙部分因设置有电加热、观察孔、清渣孔等功能版块,导致侧墙是退火窑保温的薄弱环节。提高侧墙的保温性能主要涉及两个方面,一是塞子与塞孔的密封结构;二是上部保温棉支撑结构的改进。该文分析了退火窑侧墙结构特性并提供了侧墙降低热传导的方案设计。     

超厚浮法玻璃退火窑设计探讨

文章针对超厚浮法玻璃退火存在的冷却困难和横向温差过大的问题,阐述了超厚浮法玻璃退火窑设计中的几点思路以供读者探讨。     

超白压延玻璃退火窑的设计

该文针对超白压延玻璃生产及退火的特点,提出了若干超白压延玻璃退火窑设计的相关建议考。     

BP神经网络模型对浮法退火窑内玻璃温度的预测

利用热电偶测得的退火窑中空气温度和红外测温仪测得的玻璃表面温度作为训练样本,建立了基于BP神经网络的玻璃温度预测模型.通过与实际工况对比,证实了该模型的有效性.该模型对改善玻璃退火窑运行质量,预测玻璃成型性能具有积极的意义.     

Proposed residual stress model for roller bent steel wide flange sections

The manufacturing process of structural wide flange steel sections introduces residual stresses in the material. These stresses due to hot-rolling or welding influence the inelastic buckling response of structural steel members and need to be taken into account in the design. Based on experimental data standardized residual stress models have been proposed for inclusion in inelastic buckling analyses. By incorporating these residual stress models their effect on the resistance of beams and columns can be obtained. Residual stress models for roller bent steel sections are currently not available. Roller bent wide flange sections are manufactured by curving straight members at ambient temperature. This manufacturing technique, which is also known as roller bending, stresses the material beyond its yield stress, thereby overriding the initial residual stresses prior to bending and generating an entirely new pattern. This paper proposes a residual stress model for roller bent wide flange sections, based on earlier conducted numerical investigations which were validated by experimental research performed at Eindhoven University of Technology. The proposed residual stress model can serve as an initial state of a roller bent steel section in fully non-linear finite element analyses to accurately predict its influence on the inelastic buckling response.     

中国浮法玻璃技术的现状与前景展望

文章概述了达到国际先进水平的新一代中国浮法玻璃技术在原料配料与称量技术、熔窑优化设计和提高熔化质量技术、锡槽成形技术、退火窑技术、自动控制与成套软件系统开发方面取得的最新成就,从全面提高技术、循环经济、环保节能、开发新品种等方面展望了中国浮法玻璃技术的发展前景。     

Design rules for out-of-plane stability of roller bent steel arches with FEM

This paper describes a numerical investigation into the out-of-plane buckling behavior of freestanding roller bent steel arches. As roller bent arches have structural imperfections which differ considerably from those of hot-rolled or welded sections, specific attention is paid to their inclusion in the numerical model. Sensitivity analyses are performed to assess the influence of the imperfections due to roller bending on the out-of-plane buckling response. The accuracy of the finite element model is checked by comparing the results with earlier performed experiments as presented in a related paper. The finite element model is able to replicate the structural behavior displayed by the experiments with good accuracy. A database is created with elastic–plastic buckling loads for a large number of freestanding roller bent arches. The numerical data is analyzed and presented in a so-called imperfection parameter diagram from which imperfection parameter curves are derived. The imperfection parameter curves are substituted into the European column curve formulation, leaving the original column curve formulation unaffected but extending its applicability to the out-of-plane buckling response of roller bent arches. The column curve with proposed imperfection parameter expressions can be used to check the out-of-plane buckling response of a roller bent steel arch with known non-dimensional slenderness.     

碾压钢纤维粉煤灰混凝土拌合物工作性能试验研究

对碾压钢纤维粉煤灰混凝土的性能进行了试验研究,侧重分析了钢纤维掺量和粉煤灰掺法及掺量对碾压钢纤维粉煤灰混凝土工作性能的影响.试验结果表明,随钢纤维掺量和粉煤灰掺量的增加,碾压钢纤维粉煤灰混凝土的工作度较基体混凝土大、密实性优于基体混凝土,大多数钢纤维在与振动及压重方向垂直的平面上呈二维乱向分布,其路用性能较常态钢纤维混...     

钢纤维增强碾压混凝土的研究

本文基于钢纤维增强碾压混凝土的试验研究,主要探讨了钢纤维掺入后对碾压混凝土工作性的影响、钢纤维在碾压混凝土中的分布规律、钢纤维对碾压混凝土物理力学性能的增强作用等问题。研究表明,钢纤维使碾压混凝土抗折强度和劈裂抗拉强度有较大提高,抗压强度有所增长,变形能力有很大改善。本文还得出了碾压混凝土试件的应力-应变全过程曲线。     

浮法玻璃退火窑故障诊断专家系统设计

开发了一种浮法玻璃退火窑故障诊断专家系统,能有效解决目前浮法玻璃退火窑故障诊断随意性和滞后性的问题.该系统采用Visual C 语言编写,增强了用户界面的友好性,便于用户在较短时间内迅速掌握此系统的运用.编写过程中采用了实例推理机制,提高了结论的可靠性及运行速度.