VOL 73, No. 9 (2000)

A new method for predicting the impact strength of sheet glass based on the energy approach is proposed. The method was tested on annealed and tempered glasses. Il. 3, bibliography: 4 titles.

A qualitative assessment of the spectral and viscosity-temperature characteristics of heat-absorbing glass in comparison with ordinary colorless glass has been carried out, and the features of its formation have been revealed. Based on the analysis of patent literature and the experience of glass production on the EPKS-4000 line of the Saratov Institute of Glass, it is shown that it is necessary to change the structural elements of the drain unit and molding modes to obtain high-quality heat-absorbing glass. Bibliography: 6 titles.

An alkali-free, boron-free fiberglass has been developed, superior in its basic properties to type E fiber. Fibers based on the developed glass composition are recommended to be used as a filler for high-strength fiberglass, which can be used under prolonged exposure to aggressive media. The technological characteristics of the obtained glass composition make it possible to draw the fiber on the existing equipment. Tab. 3, ill. 2, bibliography: 5 titles.

A method is proposed for analyzing the influence of changes in the technological regime of glass-making on the properties and defects of polished glass. Il. 2, bibliography: 2 titles.

On the basis of metaphosphate compositions and boron orthophosphate, multicomponent phosphate glasses have been developed, which are highly resistant to hydrofluoric acid and have an LTEC (72... 92) x; 10 ^-7 ° С ^-1 and softening temperature 435 - 590 ° С, suitable for obtaining film phosphate coatings on the surface of sheet silicate glass in order to protect it from hydrofluoric acid. Tab. 3, bibliography: 3 titles.

The features of the intensification of the sintering process of earthenware masses with an increased content of high-calcium waste with the introduction of various mineralizers into their composition have been studied. It has been established that the intensification of sintering is observed during the course of processes predominantly in the solid phase at the RO: R ₂ O ratio equal to 7: 9. Tab. 1, ill. 5, bibliography: 5 titles.

An osteoconductive biocomposite BAK-1000 has been developed, consisting of hydroxyapatite and a silicate matrix similar in chemical composition to sodium-calcium feldspars. Morphological studies of the BAK-1000 biocomposite made it possible to suggest the mechanisms of deposition of the first product of osteogenesis, collagen, on the surface of open pores of the material in a living organism with the formation of strong chemical bonds. On the basis of the BAK-1000 biocomposite, sets of implants for maxillofacial surgery and neurosurgery have been developed and introduced into clinical practice. Tab. 2, ill. 3, bibliography: 6 titles.

Studies of quartz sand samples from alluvial deposits of the Khanty-Mansiysk Autonomous Okrug were carried out. The construction of an enrichment plant using the technological principles of complex processing of primary loose masses is proposed. Tab. 2, ill. 1.

The general state of the training of technologists and the problems of higher education in Russia, affecting the process of training technologists, are considered. The ways of interaction between departments and industrial enterprises are proposed for solving a common problem - training a modern-level engineer-technologist. Bibliography: 10 titles.

A computational method for assessing the heat-shielding properties of gas-filled mineral wool insulation is considered, taking into account the mechanism of interrelated heat and mass transfer processes and their intensity depending on the operating conditions, design features and technological characteristics of the insulating material. Il. 2, bibliography: 15 titles.

It is shown that the magnetic enrichment of crushed secondary bakor raw materials (scrap bakor and factory waste) on a magnetic separator produced by the electromechanical company EMCO made it possible to improve the quality of the products produced by the plant. Il. 1, bibliography: 2 titles.