THE THEORETICAL AND EXPERIMENTAL ANALYSIS OF THE POSSIBILITY OF EMPLOYING THE GROOVE ROLLING PROCESS FOR THE MANUFACTURE OF Mg/Al BIMETALLIC BARS

S. Mróz, P. Szota, A. Stefanik, Częstochowa University of Technology, Poland The paper presents the results of investigation into the possibility of employing the groove rolling process to produce round Mg/Al bimetallic bars. The feedstock were round 22,5 mm Mg/Al bars that had been produced using the explosive welding method. The average thickness of the aluminium layer amounted to 1,7 mm. The Mg/Al bars were rolled in the stretching rolling passes. The theoretical analysis was done using the Forge2011® computer program. Based on the theoretical and experimental analysis it has been found that one of the main rolling process parameters influencing the quality of bond between the bimetal components is the initial feedstock temperature.