A method for controlling cooling of rolls

Abstract

The invention discloses a roll cooling control method. The device used includes connected spray beams and nozzles, including the following steps: first install the water pipe fixing plate and spray beams, replace the regulating valve, and then simulate the nozzle distribution to calculate the appropriate nozzle distribution. Position matrix points, and then adjust the nozzles of the upper back-up roll (1), the upper row of nozzles of the upper work roll (2), the lower row of nozzles of the upper work roll (3), the nozzles of the lower work roll (4), and the nozzles of the lower back-up roll (5) ) parameters; finally cool down the roll. The invention has the advantages of three-stage roll cooling, which reduces the edge defects of the steel plate and ensures the plate shape and horizontal difference of the same plate; each point is monitored, and different spraying forces and flows are adjusted for different parts, and the cooling of each segment is precisely controlled. Effect, improve the cooling efficiency and cooling uniformity of the roll, and ensure the quality of the cooled roll.

Description

technical field [0001] The invention relates to the technical field of roll cooling, in particular to a roll cooling control method. Background technique [0002] During the rolling process of the plate, due to the plastic deformation and the friction of the rolls, a large amount of heat is generated, part of which is taken away by the rolling piece, and a considerable part enters the rolls through heat transfer. The continuously generated heat will inevitably cause the temperature rise of the roll, so that the surface of the roll will undergo different degrees of thermal expansion, which will affect the flatness of the plate shape. In addition, due to the different specifications of the steel plates during the use of the roll, the wear of the roll surface is also non-uniform wear, which will cause more wear in the middle and less wear on both sides. When the wear difference of the roll surface is too large, the roll must be Make a replacement. [0003] Especially for thin...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low cooling efficiency and uneven cooling of rolls in the existing rolling process, and provides a roll cooling control method, which can be monitored at various points, and different spraying forces and flow rates can be adjusted for different parts, accurately Control the cooling effect of each section, improve the cooling efficiency and cooling uniformity of the roll

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