VOL 75, No. 3 (2002)

Fundamental approaches to the mathematical description of the liquidus surface in silicate systems are proposed, which can be used in the development of a computer program for the operational control of the parameters of the technological process in silicate industries. Bibliography: 10 titles.

A comparative analysis of the criteria for the basicity (acidity) of silicate glasses has been carried out. Examples of evaluating the oxidation potential of melts using the provisions of the concept of acid-base relations as applied to the conditions of continuous large-scale production of sheet glass are considered. Tab. 2, bibliography: 20 titles.

The results of studies of obtaining foam glass based on broken container, sheet, lamp glass and their mixture are presented. The possibility of using the parameters obtained on the basis of comparing the relative density and porosity of the initial and final states of the material for predicting, monitoring and kinetic studies of the process of porization of foam glass is shown. Formulas are proposed for processing kinetic data and calculating the thermophysical properties of the charge. Tab. 3, ill. 2, bibliography: 7 titles.

It is shown that the uniform distribution of silicon carbide material in the volume, having a uniform grain size composition, makes it possible to reduce thermal stresses in the product and increase the turnover of the ammunition. Il. 6, bibliography: 4 titles.

The advantages of the method of quasi-isostatic pressing in the production of capsule ammunition are considered. The developed method, in which a hard elastic material serves as the pressing medium, is a simplified version of isostatic pressing. 3, bibliography: 4 titles.

The initial conditions and factors that must be taken into account when creating ceramic mini-productions and their further development are determined. Tab. 2, bibliography: 3 titles.

The causes of defects in enameling watch bracelets made of L-90 brass have been investigated by the methods of chemical and microstructural analysis. It is shown that the marriage is due to the increased content of bismuth and lead in the alloy. A method for eliminating marriage is proposed. Tab. 1, ill. 1, bibliography: 6 titles.

The parameters of submerged separating diaphragms made of ceramics, used to obtain iron powder by electrolysis from spent sulfuric acid solutions of rolled metal etching, have been investigated. Mathematical models of the main parameters of porous ceramic diaphragms are presented, the results of their use in electrolysis are indicated. Il. 4, bibliography: 2 titles.

The results of the use of alternative energy sources in the technology of glass and glass-crystalline materials are presented. It is shown that in the process of plasma spraying of glass powders on household glassware, a decorative coating with good physical and mechanical, thermal and consumer properties is formed. Tab. 1, bibliography: 20 titles.