A Modeling Study of Diffusion Wear of Carbide Tools in Titanium Machining

M. Crosskey and E. Gutierrez-Miravete
Department of Engineering and Science, Rensselaer at Hartford, Hartford, CT, USA

COMSOL Multiphysics has been used to model the temperature distribution produced inside a tool as a result of the forces and friction involved in a cutting process, along with the resulting diffusional flow of cobalt binder from the tool.

The model uses as the input tool rake and flank face temperatures determined either experimentally or from other models, and then proceeds to couple the thermal problem to the solid-state diffusion problem.

Computed results predict the effects of changes in cutting parameters on diffusional wear and the resulting tool life. These are compared against previously published data.