Development of a novel high temperature open tribometer with laser-based heating system

摘要: Abstract Contacts operating under severe conditions such as high temperatures, contact pressures and/or sliding velocities, can occur in many applications and especially metalworking processes. The extreme thermomechanical loadings withstood by the tooling during interaction directly govern their lifetime but also functional properties of component surface. Understanding friction wear mechanisms behind is still an issue only be addressed with a relevant experimental set-up. This work presents development new laser-based heating system fitted on open tribometer aim investigating for AISI1045 carbon steel against uncoated cemented carbide. A 3D numerical approach adopted to design predict temperature distribution, well rates, below laser beam at expected zone. phase transformation model based simulated thermal kinetics applied identify leading potential formation austenite show that proper combination power velocity has selected ensure desired conditions. It shown example even maximum 600∘C reached zone without exceeding melting ahead while thin layer affected laser. set-up described integration head into test bench. An campaign carried out influence tribological behavior terms friction, microstructural evolution beneath track.