Numerical modelling of the metal flow during the rolling process of the round screw-ribbed bar in the finishing pass

Reinforcement bars are used chiefly in the building industry in the production of reinforced concrete constructions, and as working elements in bridge building. An important factor, which provides for the common bearing of the bar and concrete, is that its effectiveness is highly dependent on dimensions and positioning of the ribs at the barʹs surface. In this paper, the computer simulation of the rolling of the round reinforcement bar is presented. It has been performed in order to define the specific features of the mode of metal flow in the roll gap and to determine the effect of the shape and dimensions of the roll on the pitch of the ribs of the finished bar