Abstract
As part of the research, the technical condition of innovative railcars (built from 2018 to 2022) used for transportation of mineral fertilizers was analyzed in comparison with mineral railway cars on bogies with an axial load of 23.5 tons/axle. When assessing damage, the number of uncoupling of railcars in the current types of repairs for the inter-repair period is taken as a basis. It is demonstrated that, on average, each standard railway car was uncoupled 0.92 times annually, while the innovative mineral carrier was uncoupled 0.42 times. A significant proportion of the uncoupling of innovative railcars in the current repair of the TR-2 (74 %) is due to a malfunction of the wheelsets (thin rib), which is 42 % higher than the same indicator for standard railcars. It is noted that the existing simplified accounting system for mileage and operation life does not allow to identify the cause-and-effect relationship of the occurrence of malfunctions. It is proposed to develop a repair technology for restoring protective covering for the inner surfaces of a railcar body.
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