Metal flow lines in metal formed products have great influence on their strength and thus they are the most important in process design. Even the externally sound products often have decisive internal defects due to bad metal flow lines. Therefore the consumers usually impose some constraints on the internal metal flow lines for most power transmission parts including gears, bearings and the like. As a consequence, the precise prediction of metal flow lines and its convenient visualization are so much important. AFDEX is powerful in this point as shown in the figures, showing 2D and 3D metal flow lines formed in metal forming processes.