International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The article presents a study of the sound and thermal insulation properties of ceramic plates with cavities, designed for beehives. The plates are obtained by the “casting” method from a water-dispersed colloidal system based on a patent-protected quartz glass-ceramic. They are composed of amorphous SiO2, mullite and cristobalite. To measure the thermal conductivity, a thermal chamber is constructed with a heater installed in it. Given that the heat flow passing through the three-layer ceramic plate for beehives is constant, the temperature difference between the two opposite sides of the plate at steady state (at constant heat flow) is measured and the thermal conductivity is calculated. A two-chamber method is used to determine the sound insulation capacity of the ceramic plates for beehives. The sound pressure of the sound waves – the incident one and of the wave which has passed through the sample –is measured in the frequency range from 100 to 3150 Hz

This article deals with the study of the cavity of ceramic constructional elements for the construction of beehives and carriers for electric furnace heaters. Unlike the traditional practice of performing tomography studies to determine the structure and harmful defects in the interior and surface of specimens, in the present studies, the non-destructive non-contact method is used to assess the nature and volume of deliberate fulfilled cavities in ceramic specimens. The role of well-shaped and regulated cavities is to reduce the coefficient of thermal conductivity in the hives to the inside, and in the carriers for heaters to the outer walls of the furnace, i.e. heat loss. The cavity samples are obtained from an aqueous dispersed colloidal system based on patent-protected quartz glass-ceramics by the “pouring” method. The obtained structural details are fireproof, thermally stable and with high physical and mechanical characteristics. They are composed of amorphous SiO2, mullite and cristobalite. The study of the cavity at different beam depths was performed using a NIKON XTH 225 device, and the data processing Volume Graphic, My VGL.