Abstract
The influence of nanostructurisation of steel produced by mechanical-pulse treatment on wear resistance of the friction pair ring—insert in diethylene glycol medium which used during the process of natural gas drying was studied. The ring of 0.4C–1Cr steel after quenching and tempering at low temperature was subjected to surface treatment for nanostructurisation, and then it was tested as a part of the friction pair with other friction pair component—high strength cast iron. As a reference the pair 0.4C–1Cr steel after quenching and tempering (ring)—bronze (insert) was used. The treatment due to a severe plastic deformation led to the formation of the nanocrystalline structure with a grain size about 20 nm and microhardness 8.6 GPa on specimen surface. High wear resistance of both components of the friction pair steel–cast iron was reached as a result of surface treatment of the steel component, since it significantly reduced friction coefficient and temperature in the friction contact zone.
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