SYSTEM controlled cooling of the work rolls of stands of the finishing hot rolling mill BROADBAND

摘要

The invention relates to metallurgical production, and can be used to cool the surface of the work rolls of stands of the finishing mill in the manufacture of broadband hot-rolled strips. controlled cooling system working roll stands of the finishing group broadband hot rolling mill includes a device water-cooling of the work rolls of stands of the finishing group consisting of a manifold with nozzles rows fixedly attached to the input and output sides of each stand finishing mill group over the top and under the bottom wires and interstand cooling device in the finishing train, consisting of rows of nozzles fixedly mounted on the movable upper and a fixed lower plitovinah, further controlled cooling system of rolls is provided with an output side of each of the stands of the finishing mill apparatus differentiated cooling surface of work rolls formed in a rigidly fixed above the upper and below the lower wirings collectors with rows of nozzles arranged transversely of the rolling axis. The wiring is slit channels uniformly spaced by the width of the wiring, and, the total area of ​​the lower wiring slotted channels is twice the total area of ​​the lower gap wiring channels, and the total area of ​​gap channels each subsequent transactions during the rolling stand decreased by 5-15%, relative to the total area slotted channels postings previous stand.