Roller cooling control method

Abstract

The invention discloses a roller cooling control method. A device used by the method comprises a spray beam and a nozzle which are connected. The method comprises the following steps that firstly, a water pipe fixing plate and the spraying beam are mounted, a regulating valve is replaced, then nozzle distribution is simulated to calculate suitable nozzle distribution position matrix points, and then parameters of an upper supporting roller nozzle (1), upper working roller upper row nozzles (2), upper working roller lower row nozzles (3), a lower working roller nozzle (4) and a lower supportingroller nozzle (5) of a rolling mill are sequentially adjusted; and finally, a roller is cooled. The method has the advantages that three-stage roller cooling is achieved, the defects of the edge partof a steel plate are reduced, a plate type and transverse same plate difference of the steel plate are ensured, all-point monitoring is conducted, different injection force and flows are adjusted fordifferent parts, the cooling effects of all sections are accurately controlled, the cooling efficiency and the cooling uniformity of the roller are improved, and the quality of the cooled roller is guaranteed.

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...

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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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