Features of extending the service life of transport and technological machines in mountain and foothill conditions

When transport and technological machines are operated in mountain and foothill conditions, their bodies and parts are more susceptible to corrosion, which leads to premature failure and a sharp decrease in the reliability of joints and main load-bearing parts. Multifunctional anti-corrosion coatings with high physicochemical properties are therefore needed to extend the service life of bodies and units of such machines. The aim of the study is to propose an epoxyurethane anti-corrosion coating based on ED-16 epoxy resin modified with cyclocarbonate and a method for estimating the effect of the coating reapplication interval on the corrosion-limited service life of vehicle units operated in mountain conditions. In a preliminary screening test in 10% HCl, the mass changes of coated copper, steel and aluminum alloy specimens did not exceed 0.0003 g. Coating deterioration observed in operation is approximated by a power law of mileage, and the predicted service life of the unit is reported with 95% confidence intervals, the assumptions of the model and the limitations of the available data.

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