Non-sinusoidal Vibration Method of Continuous Casting Mold

Abstract

The invention provides a method for non-sinusoidal vibration of a continuous casting crystallizer. The specific process is as follows: controlling the driving device of the continuous casting crystallizer so that the continuous casting crystallizer follows an eight-segment speed waveform determined by the following eight-segment speed function in each vibration cycle. Carry out non-sinusoidal vibration: and introduce a new vibration control variable, namely the isokinetic duration factor m, to increase the waveform control method to facilitate vibration control according to actual production conditions; combine the casting speed and vibration waveform to target different castings Speed, different vibration schemes can be designed; it can increase the consumption of mold slag, which is beneficial to the lubrication of the continuous casting billet, reduces friction, and reduces cracking and adhesion phenomena; it can extend the time for the vibration speed of the crystallizer to be equal to the casting speed, It is conducive to the uniform heat transfer of the continuous casting billet to the outside and the stable growth of the initial solidification billet shell.

Description

technical field [0001] The invention belongs to the technical field of metallurgical continuous casting, and in particular relates to a non-sinusoidal vibration method of a continuous casting crystallizer. Background technique [0002] During the continuous casting slab production process, molten steel is completed in the continuous casting production line from solidification to forming. As the most important part of the continuous casting machine, the continuous casting mold plays an important role in cooling heat transfer, solidification forming, liquid steel purification and quality control of continuous casting slabs. During the molten steel casting process, the crystallizer vibrates according to certain rules to ensure the lubrication of the continuous casting slab and the mold wall, so as to prevent the steel breakout accident caused by the bonding of the initial solidification slab shell and the mold wall. With the continuous deepening of people's understanding of th...

AI Technical Summary

Problems solved by technology

However, in the process of high-speed continuous casting slab production, surface cracks, vibration marks, and even breakout accidents will inevitably occur

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