Abstract
Few studies have been undertaken to understand friction in hot metal forming, especially when addressing the critical issue of whether changing magnitudes of strain rate and temperature at the interface influence the level of friction. This paper describes an experimental investigation into friction under hot forming conditions using the ring compression test. The experiments shows how variations in temperature at the interface affected the frictional behaviour. Additional observations were made with regard to the suitability of using the ring compression test for hot metal forming, especially their ability to reproduce process conditions in hot rolling. Finite-element simulations of the ring compression test were also completed under similar temperatures as in the experiments. The correlation between the experimental measurements and the results of the process modelling is presented in the paper.
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