Abstract:Various heat treatments by induction heating were applied to the material of the mandrel bars used in the manufacturing of seamless tubes by mandrel mill rolling. The influence of experimental conditions was systematically examined, both using small-sized samples and at industrial scale. Within three distinct regions, delimited by a given combination of quenching and tempering temperatures, the toughness of the material could be significantly improved. When applied to mandrel bars in mandrel mill rolling, this… Show more
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