Method for controlling gap between upper framework and lower framework of continuous casting hydraulic fan-shaped section

Abstract

The invention relates to a method for controlling a gap between an upper framework and a lower framework of a continuous casting hydraulic fan-shaped section. The method comprises the following steps of arranging guide mounting plates and guide blocks at the front and back sides, corresponding to the front and back sides of the lower framework, of the upper framework of the hydraulic fan-shaped section; taking the upper framework and the lower framework of the fan-shaped section off line, putting the upper framework and the lower framework on a standard maintenance table, and arranging a maintenance framework and a jack at the two sides of the standard maintenance table; opening a jack to jack up the upper framework to the outlet direction of the fan-shaped section, stopping jacking when an upper roll system and a lower roll system of the fan-shaped section are aligned, and measuring a gap value between each guide block of the upper framework and the inside surface of a guide plate of the lower framework; disassembling the fan-shaped section, and hoisting the upper framework away; loosening a fixing bolt of each guide block, selecting an adjusting gasket by using the gap value as the thickness value, inserting the adjusting gasket between each guide block and the corresponding guide mounting plate of the upper framework, and tightening each fixing bolt, so as to close the fan-shaped section. The method has the advantages that on the premise of aligning the roll systems of the upper framework and the lower framework of the fan-shaped section, the influence on the lifting operation and the implementation of the slight pressing function is avoided, and the purposes of improving the accuracy control level of the roll gap and overcoming the defect of a gap between toothed rolls are realized.

Description

technical field [0001] The invention relates to the technical field of continuous casting machines, in particular to a method for controlling the gap between upper and lower frames of a continuous casting hydraulic segment. Background technique [0002] In order to realize the light reduction technology of the continuous casting machine, the roll gap of the sector section is controlled by hydraulic pressure. The upper and lower frames of the sector section are connected by 4 columns with lifting cylinders, and the connection between the columns and the frame adopts movable spherical bearings. The alignment between the front, rear and left and right of the upper and lower frames of the fan-shaped section (that is, the alignment of the upper and lower roller systems) is composed of guides respectively arranged on the upper and lower frames of the fan-shaped section. The control of these guide gaps is relatively vague during the design process. After the fan section is installe...

AI Technical Summary

Problems solved by technology

These segments control the jagged roll gap in different ways, and the effects achieved are also quite different

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