The paper presents the results of work on the creation of a porous permeable material based on fused silica and the technology of manufacturing filter elements from this material. The compositions of the developed materials, technological parameters, physical and technical and filtering properties are given. The developed filter elements have been successfully tested in industrial conditions. Tab. 2, ill. 2, bibliography: 4 titles.
The influence of temperature modes of cooking and design features of glass-melting furnaces on an increase in the specific removal of molten glass during the production of hardened insulating parts of suspended high-voltage insulators is shown. Designs of glass-melting furnaces and temperature regimes of glass melting are proposed, the use of which will increase the efficiency of production of insulators. Il. 2, bibliography: 2 titles.
The method of optical spectroscopy is used to study the radiation defects of the network of soda-silicate glasses, which appear under the action of g-radiation. At irradiation doses in the range of 10 2 - 10 3 Gy, the formation of hole-type color centers was revealed in glasses. Il. 3, bibliography: 11 titles.
Research has been carried out to determine the strength and heat resistance of glass samples with edges obtained as a result of cutting a moving strip of float glass using mechanical and laser cutting. The advantage of laser cutting is shown. Tab. 1, ill. 4, bibliography: 5 titles.
A further increase in the efficiency of glass-making processes depends on improving the uniformity of the charge used. To obtain a homogeneous mixture and prevent its delamination, it is necessary to calculate the optimal mixing duration for each type of mixer. Tab. 1, ill. 1, bibliography: 4 titles.
Using a numerical model, the influence of the bottom profile on hydrodynamics and heat transfer in the melting basin of a glass-making furnace is investigated. The differentiated effect of the length and depth of the pit on the formation of convection flows and heat exchange in different parts of the basin has been established. Quantitative relationships have been established between the linear dimensions of the deepened part of the basin (beyond the threshold) and some characteristics of hydrodynamics and heat transfer in the bath. Tab. 1, ill. 7, bibliography: 5 titles.
A technique has been developed for stabilizing the optical characteristics of float glass by adding specially selected dyes to the charge, the amount of which is determined by the difference in light transmission of two samples. The difference in transmittance of the samples for each wavelength ("delta") is detected and a graph is plotted according to the wavelength. Differences in the transmission of glass samples of different thicknesses can be determined from the peaks of the "delta" curve. Il. 1, bibliography: 3 titles.
The effect of a combination of external factors on the redox equilibrium of iron and sulfur, the change in the technological properties of melts and the light transmission of colorless sheet glass in continuous production has been studied. A quantitative assessment of the direction of change in the redox potential of molten glass has been carried out. Measures are considered that make it possible in practice to improve the operation of bath furnaces by adjusting the oxidation state of the melt. Tab. 4, ill. 3, bibliography: 8 titles.
Based on the analysis of the EPR spectra, the process of glass synthesis by the sol-gel method is studied. The processes of gelation and formation of xerogels are considered depending on the temperature-time parameters and the type of the initial chemical components. It was found that the glass phase begins to form at a temperature of 800 ° C. Il. 3, bibliography: 9 titles.
The results of a study of the features of heat transfer processes in porous thermal insulation at high temperatures are presented. The effect of pore size on the methods of heat transfer in porous materials based on glass is considered, and recommendations are given on methods for calculating heat transfer in materials with closed porosity. Il. 1, bibliography: 3 titles.
