An investigation of heat transfer and deformation during hot upsetting has been performed by comparing results of finite element analysis with experimental data obtained from the literature. The effect of the interface heat transfer coefficient for three orders of magnitude has been evaluated in the hot upsetting of AISI 1042 carbon steel, AISI 304 stainless steel, and OFHC copper. The finite element studies have shown to be a practical method to obtain information on the interface heat transfer coefficient, a value that is difficult to determine experimentally. The results for heat transfer in the billets and dies considering transfer time, resting time, and deformation are presented.

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