VOL 78, No. 5 (2005)

A comparative analysis of the ability of sheet glass from a number of manufacturers to transmit solar radiation in different ranges: 300 - 2500 nm (direct solar transmission), 300 - 380 nm (ultraviolet transmission) and 380 - 780 nm (light transmission). It is shown that a high level of light transmission does not always guarantee a high transmission of ultraviolet radiation. Tab. 2, bibliography: 2 titles.

The results of studying the effect of unconventional additives - powders of aluminum and zinc metals - on the processes of silicate and glass formation using the method of polythermy and thermogravimetric analysis are presented. The peculiarities of the glass-making process of decorative glasses with the use of non-traditional additives are noted. Tab. 1, ill. 7, bibliography: 9 titles.

It was found that the transverse bending strength of float glass sheet depends on the location of the float side relative to the applied load. If, when bent, the side in contact with the tin (float side) is in the tension zone, then the strength of the glass is reduced by an average of 40% compared to the strength when the float side is in the compression zone. This phenomenon must be taken into account in the design of translucent structures and the manufacture of three-layer glass. Il. 1.

The filtering characteristics (air permeability, efficiency) of porous permeable ceramic materials with different microstructure have been determined. Requirements for a ceramic filtering element have been formulated, technical documentation has been prepared for a modular-type apparatus with ceramic filtering elements. The use of such elements for cleaning hot gases from dust, in addition to the ecological effect, gives an economic effect, expressed in the production of additional energy due to the utilization of waste gas heat. Tab. 2, ill. 5, bibliography: 9 titles.

A method for the calculation of the duration of isothermal sintering of a powder body, its final porosity and shrinkage is considered. The technique, based on a spatial model in the form of a cubic packing of spherical particles, uses the equations of the physics of sintering, the physicochemical properties of the substance, and the particle size. It allows one to describe not only the initial (baking of particles) and final (compression of isolated pores), but also the intermediate stages of compaction according to a single mechanism of mass transfer. The sintering indices of samples made of tare glass powder were calculated by the viscous flow mechanism. The discrepancy between the calculation results and experimental data in absolute value is 2.0% for porosity and 1.5% for shrinkage. Tab. 1, ill. 5, bibliography: 9 titles.

The possibility of using hollow ceramic microspheres and an organosilicon binder with silane and carbosilane bonds to obtain heat-resistant heat-insulating ceramic foam materials for structural purposes is considered. The influence of the filler and the gas medium on the products of thermal destruction and the properties of the composition is shown. Thermophysical and physical-mechanical characteristics of the heat-insulating material are given. Tab. 3, ill. 2, bibliography: 4 titles.

The Saratov Institute of Glass - the developer of the domestic version of the float process by the method of two-stage glass molding - is one of the leading applied institutes in Russia and successfully works in the field of production and development of various new types of float glass and products based on it.

The problems arising when assessing the quality of the glass batch are considered, and methods for their solution are proposed. Bibliography: 6 titles.

Rare earth magnetic roller separators are suitable for extracting iron impurities from various materials. The advantages of these magnetic separators in comparison with the traditionally used ones are shown.

The consulting of the management system in the field of occupational safety and labor protection is considered on the example of JSC "Borsky glass plant". Il. 2, bibliography: 5 titles.