Rolling mill roll box type stage cooling device

Abstract

The invention discloses a rolling mill roll box type stage cooling device applied on a plate and strip rolling mill with high rolled piece heat conducting coefficient. The rolling mill comprises an upper working roll and a bearing seat thereof. The rolling mill is characterized in that: the bearing seat is movably connected with stage water supply boxes through a rotary shaft; the stage water supply boxes are symmetrically arranged on the oblique upper part of the upper working roll in a splayed shape, the upper ends of the stage water supply boxes are provided with quick-change connectors, the middle parts of the stage water supply boxes are provided with nozzles, the lower parts of the stage water supply boxes are provided with collecting boxes, pressing rolls are arranged on the lower parts of the collecting boxes, the working faces of the pressing rolls are freely jointed with the working face of the upper working roll, and the pressing rolls are supported on end plates of the stage water supply boxes; and the nozzles are divided into I, II, III and IV zones along the length direction of the working roll, and each zone is connected with a collecting pipe with a control valve, wherein the number of the nozzles is collocated as specified. Because of the adoption of a two-stage reclamation device, the device has stage cooling function, solves roll cooling and isolation of cooling liquid and a rolled piece, realizes rough adjustment of thermal convexity of the rolls, and obtains a better plate form.

Description

technical field [0001] The invention relates to the lubricating, cooling or heating of rolls, in particular to the external cooling of the upper working rolls of a plate and strip hot rolling mill with high thermal conductivity. Background technique [0002] At present, in the field of non-ferrous metal rolling, especially in rolling mills with high thermal conductivity of rolled pieces, it is necessary to cool the upper roll while minimizing the spraying of coolant onto the rolled piece. In the past, the structure of the upper roll cooling device of the rolling mill was as follows: image 3 shown. This cooling device directly sprays the cooling liquid onto the surface of the upper work roll through the injection beam. At the same time, the device also uses a pressure roll to collect the cooling liquid and flow to both sides of the roll. In fact, it is also difficult for this cooling device with pressure rollers to completely block the cooling liquid and flow to both sides,...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to propose a box-type sectional cooling device for rolling mill rolls, which aims to solve the cooling problem during rolling of non-ferrous metal rolling pieces with high thermal conductivity, so as to ensure the rolling quality

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