This paper presents the results of a study on the laser remelting and laser transformation hardening of mandrel H13 steel (quenched and tempered) for a tube rolling mill. The surface of the specimens was irradiated with a continuous high-power fibre laser (RFL-C3300) with a spot size of 12 mm × 2 mm. A comparison of the morphological organisation, microhardness and high-temperature wear resistance of the laser-remelted and laser-phase-change-hardened specimens was carried out to investigate the effect of laser process parameters on the orga...
