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Operation of mechanisms and equipment under significant temperature changes can cause brittle destruction not only of metal structures. In the process of research of high pressure hose of camber mechanism there was revealed violation of the tightness of the outer rubber layer, which led to further penetration of acid-alkaline environment (moist sea air) into the formed voids in winding layers. In the damaged segments the torn filament ends of metal coiling of flexible hydraulic connection seem typical of brittle damage. Further study of macro-and microstructure of the material of metal filaments of the wire and detailed analysis of the near-surface layer revealed violation of the technology of protective coating of the filaments. The low quality of brass coating of the metal coiling of DN20 wire of the hydraulic connection resulted in the rapid corrosion attack. The presence of structural defects in the near-surface layer led to the formation of discontinuities of brass coating, to a decrease of adhesion characteristics of the metal coiling. Iron oxide being a product of corrosion of metal filament coiling in the formed voids between the layers slashed under bending effected by friction contact and alternating loads. The research results can be used for developing effective anti-corrosion methods for flexible hydraulic connections.

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