Hot powder pressing-An analysis of the thermo-mechanical behavior of the roller

An analytic model, which can calculate the heat transfer and thermal deformation of hot powder pressing roller, was suggested. The calculation accuracy of the model was verified with a finite element method (FEM) and experimental results. By using the strain versus cycle's curve (E-N curve) of the roller material and the prediction of the thermo-mechanical behavior of the roller, the lifetime of the roller at a given operating condition could be estimated. The predicted value was fairly reasonable in comparison with the actual operating data.