FEATURES OF THE FORMATION OF DYNAMIC MODELS OF MNLZ MULTI-MOTOR HYDRAULIC DRIVES

Abstract

Refrigerators are one of the most common units used in the final sections of technological lines of production processes in the ferrous metallurgy. On these aggregates, the hot metal, gradually moving along them, cools down to a temperature of marketable condition. Cooling type refrigerators are widely used, in which movable beams perform cyclic translational motion in two planes: vertical and horizontal. During the long evolution of the drives of these refrigerators, the engineering search for the most rational solution led to the conclusion that the hydraulic drive is the most effective. However, along with the positive qualities of hydraulic drives, negative phenomena are also observed during their operation, constraining their widespread use. The most significant disadvantage of hydraulic drives in these units is the presence of significant dynamic processes in their system. The results of the analysis of the reliability of the refrigerator elements of the continuous casting machine (CML) showed that hydraulic drives in refrigerators fail quite often (up to a hundred times a year). Thus, the assessment of dynamic processes during the operation of MNLZ refrigerators is of considerable interest from the point of view of the reliability of this type of equipment.