Parameter control method for vibrating table of continuous casting crystallizer

Abstract

The invention provides a parameter control method for a vibrating table of a continuous casting crystallizer. The method comprises the following steps of: constructing an offline vibration waveform trigger according to a vibrating table waveform trigger model algorithm, and compiling a crystallizer vibration waveform generation program; setting sine and cosine vibration parameters according to different steel grades; writing the set vibration parameters into a data block of a vibration programmable logic controller (PLC) program of a primary control system, controlling a vibrator, and displaying waveforms, negative slip time and a vibration mark depth in real time by utilizing the waveform trigger; and determining a casting powder viscosity value of a corresponding steel grade. Therefore, sticking breakout accidents of the crystallizer and breakout early warning times can be effectively reduced; the surface quality of a casting blank is improved, the reject rate is lowered, and the metallic yield is improved; the cleaning capacity of a blank field is reduced, the casting blank cleaning cost is saved, and the labor intensity of flame cleaning personnel is reduced; and the risks of online thermal tests are reduced, and the viscosity applicability level of casting powder is improved.

Description

technical field [0001] The invention belongs to the field of continuous casting technology, in particular to a parameter control method for a vibrating table of a continuous casting crystallizer. Background technique [0002] At present, hydraulic vibration technology is commonly used for the vibration of continuous casting molds. In order to control the surface quality of the slab, the vibration negative slip time must be shortened. However, in the original sinusoidal vibration mode, in order to reduce the negative slip time, it is necessary to reduce the amplitude or increase the vibration frequency, which will lead to a decrease in the consumption of mold flux, a decrease in the lubrication performance between the slab and the mold, and an increase in mold friction The resistance increases the risk of bonded breakouts, and every time the breakout is predicted, it must slow down to crawling, causing the three adjacent billets to be degraded due to its influence, and there ...

AI Technical Summary

Problems solved by technology

However, in the original sinusoidal vibration mode, in order to reduce the negative slip time, it is necessary to reduce the amplitude or increase the vibration frequency, which will lead to a decrease in the consumption of mold flux, a decrease in the lubrication performance between the slab and the mold, and an increase in mold friction resistance, which increases the risk of bonded breakouts, and every time the breakout is predicted, it must slow down to crawling, causing the three adjacent billets to be degraded due to its influence, and there are certain hidden dangers in quality

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