Application prospect of impregnating compounds for maintenance of suspension components of road machines under different temperature conditions

The application possibility of impregnating compounds for maintenance of rubber components of a pneumatic suspension of road machines under different temperature conditions has been assessed. Solid oil (the cheapest general-purpose plastic grease) and anaerobic material of AN-1U grade (richer impregnating compound) were used as impregnating compounds. It was found out that the use of impregnating compounds for maintenance of rubber components of a pneumatic suspension of road machines made possible to increase their resistance to the effect of negative temperatures, to minimize material cracking and as a result to increase service life of the suspension.

IMPREGNATION OF POROUS METAL CASTING WITH POLYMER COMPOSITIONS: CURRENT TRENDS

Modern sealing materials for impregnation of cast parts are considered, as well as types of casting defects that require such processing. The block diagram of impregnation is given, its operations are described. A classification of modern methods of impregnation of castings with polymer materials is proposed, and the results of their comparative evaluation are presented. The most practical interest among manufacturers is the method of impregnation «wet vacuum / pressure» in combination with the use of the impregnating composition Loctite Resinol 88 C. This is due to the best combination of price and quality of the sealant, as well as the fact that this impregnating compound can withstand the highest temperature (250 °C) compared to its analogues and is characterized by the lowest consumption when processing products (1.5 g/kg).