Energy-saving type sectional rack water collecting tube device and control method thereof

Abstract

The invention discloses an energy-saving type sectional rack water collecting tube device and a control method thereof. The energy-saving type sectional rack water collecting tube device comprises a rack water collecting tube and further comprises a central controller and a base automatic assembly, wherein the rack water collecting tube comprises an upper rack water collecting tube, an upper rackwater inlet tube connected onto the upper rack water collecting tube, an upper water inlet tube blocker for fixing the upper rack water inlet tube as well as a lower rack water collecting tube, a lower rack water inlet tube and a lower water inlet tube blocker which are in mirror symmetry with the upper rack water collecting tube, the upper rack water inlet tube and the upper water inlet tube blocker separately, wherein a plurality of spray nozzles are arranged on the upper rack water collecting tube; the central controller is used for issuing a strip steel width layer instruction; and the base automatic assembly is used for receiving the instruction issued by the central controller to realize controlling the rack water collecting tube to spray cooling water to a strip steel surface in a sectional mode. The energy-saving type sectional rack water collecting tube device improves strip steel width dimension precision, solves the hot-rolled strip steel edge performance defect, further reduces energy consumption, realizes reducing cost and improving efficiency, and improves product competitiveness.

Description

technical field [0001] The invention relates to a control device or method for a metal rolling mill or its processed products, more specifically, to an energy-saving segmented rack water header device and a control method thereof. Background technique [0002] The finishing rolling unit of the existing hot rolling production line has seven rolling mills. Except for the high-pressure water installed behind the F1 frame, the outlets of the other F2-F7 frames are all equipped with frame cooling water (referred to as frame water). The main purpose of water use is to control the rolling speed and control the surface quality of the strip. But at the same time, the use of water in the rack also has a great influence on the width of the strip and the performance of the edge of the strip. Improper use will cause the width of the strip to be out of tolerance during the rolling process, and problems with the mechanical properties of the edge of the strip. According to the practice fo...

AI Technical Summary

Problems solved by technology

[0007] 2) When the width of the rolled strip steel is narrow, the rack water is also fully opened, resulting in the cooling of the edge of the strip width direction is much greater than that of the middle, resulting in uneven cooling between the middle and the edge;

[0008] 3) Since the rack water is fully open mode, when rolling strips with a narrow width, due to uneven cooling between the edge and the middle, many strip widths will be controlled out of tolerance;

[0009] 4) From the point of view of the production control theory of the hot rolling process, the cooling of the edge and middle of the strip by the rack water is uneven, and it will also cause problems with the internal mechanical properties of the strip;

[0010] 5) When the rack water is fully open and fully closed, when narrow strip steel is reproduced in many cases, the waste of rack water is quite serious, which has a great impact on energy consumption costs

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