Process and device for straight-drawing long drawing material in multiple steps

A process for drawing a stretched metal workpiece for cross-sectional reduction in more than one drawing step with at least two sequential drawing aggregates, comprising the steps of:

• gripping an outer periphery of the workpiece in each of the aggregates with two alternately-moving clamping carriages for continuously drawing the workpiece through respective drawing rings arranged in drawing-ring holders of respective ones of the aggregates;
• driving the aggregates independently of one another by selectively moving and clamping the drawing-ring holders in a longitudinal direction of the workpiece in at least one of a power-regulated and moment-regulated manner for maintaining a defined prestress force that prevents deflection of the workpiece from a straight line during drawing;
• and permanently measuring an actual value of drawing force and comparing the actual value to a preset value stored in a computer, and, when the actual value is not equal to the set value, sending a signal to a drive of at least one of the drawing aggregates to adjust the drawing force to the preset value.