SPEED CONTROL OF ELECTRIC DRIVES UNIVERSAL REVERSE STAND ROLLING MILL

Abstract

The problem is solved by a method of speed regulation main electric reversing universal rolling mill stand, which includes flow measurement of horizontal and vertical rollers, vertical and horizontal diameters of the rolls, the peripheral speed of the leading horizontal rollers, calculation the aisles when rolling billet girth tightening corners, expansion, hoods in the horizontal and vertical rolls, the task of leading the circumferential velocity of the horizontal rolls and depending on the values of the calculated parameters of rolling change jobs to a peripheral speed of the rolls known. A method is proposed will prevent emergency modes, increase the life of electrical and mechanical equipment, bring the process to the free-rolling conditions, therefore it will reduce the load on the electrical equipment and provide energy savings. Conclusion. The proposed method can be implemented on slab 1150 at metallurgical combines. In this case, the horizontal rollers, vertical rollers, electric drive of horizontal rollers, electric drive of vertical rolls and the existing control system of the main electric drive of a universal cage remain unchanged. But in the channel of the problem of the frequency of rotation of rods additionally includes a software and hardware complex with a set of communication devices with the object, which implements the processing of signals from the sensors and carries out the necessary calculations of technological parameters of rolling, tasks of the circular velocities of horizontal and vertical rolls in the drag, in mode single rolling and simultaneous rolling in horizontal and vertical rolls.