The article presents modern data on the materials used to create model kits, the method of their installation for use on any foundries, specializing in the repair and creation of castings by experimental or small-scale batches. The analysis of the used materials, adhesive compositions for their fastening, as well as economic indicators of the costs necessary for their production was made. The properties of glued joints used for manufacturing components of model kits from plastics and its combinations with metal parts are shown.

The paper analyzes the mineral acid vapors formation and their interaction with protective coatings based on bentonite clays, periclasite and shungite. A theoretical assessment of the acid vapor in the exhaust gases amount was carried out taking into account the performance of furnaces. Thermodynamic probability of acid vapor formation was calculated depending on the melting conditions for different types of melting units, the interaction of acid vapor with the components of protective coatings based on bentonite clays, periclasite and shungite was estimated.

The article presents the results of computer simulation of the crystallization of castings from high-speed steel R6M5, intended for the manufacture of cutters and gear shaping tools in the conditions of OJSC “Minsk Gear Plant”. The use of modeling made it possible to optimize the gating system, reduce this volume of the profitable part by 30–35 % and increase the yield of suitable casting, which made it possible to reduce the consumption of expensive alloying elements introduced into the melt to compensate for burnout during melting and casting.