Thermal Phenomena in the Friction Process of the TG15 - Hard Anodic Coating Couple

Abstract

The paper presents a one-dimensional model of heat conduction in a couple consisting of a cylinder made of a sliding plastic material, TG15, and a cuboid made of alloy AW 6061 coated with a hard anodic coating, where the couple is heated with the heat generated during friction. TG15 is a composite material based on polytetrafluoroethylene (PTFE) with a 15% graphite filler, used for piston rings in oil-free air-compressors. Measurement of temperature in the friction zone is extremely important for the understanding and analysis of the phenomena occurring therein. It is practically impossible to introduce a temperature sensor in such a place. Therefore, the interaction taking place in such a couple was modelled using numerical methods. In order to simplify and accelerate the calculations, a one-dimensional model and constant thermophysical parameters of the materials participating in friction were adopted. To solve the proposed model, the finite difference method was used (FDM). The resultant system of equations was solved by means of an explicit scheme.

Improving scratch-resistance and wear-resistance of VN film by deep cryogenic treatment with liquid nitrogen

“…residual stress and interfacial strength) of VN film/718 substrate, which has an important influence on the service properties of VN film. This phenomenon is similar to the performance variation of coating/film and substrate at high temperature [33-35]. In this study, no such measurements of the effect of DCT on VN film and 718 substrate have been performed, but it is worth studying in the future.…”