Non-sinusoidal vibration waveform of continuous casting crystallizer

Abstract

The invention discloses a non-sinusoidal vibration waveform of a continuous casting crystallizer. The non-sinusoidal vibration waveform of the continuous casting crystallizer not only has the characteristic of non-sinusoidal vibration, but also has the advantage of sinusoidal vibration. A non-sinusoidal vibration mode is constructed through a five-section function, and a crystallizer driving device is controlled. The non-sinusoidal vibration waveform function constructed by the non-sinusoidal vibration waveform of the continuous casting crystallizer is simple in form and easy to implement, andcan meet different vibration requirements; and meanwhile, displacement and speed curves are continuous and smooth, an acceleration curve is continuously changed, sudden change and infinite values areavoided, rigid and flexible impact on the driving device is avoided, and good dynamic characteristics are achieved.

Description

technical field [0001] The invention relates to the field of continuous casting, in particular to a non-sinusoidal vibration waveform of a continuous casting mold. Background technique [0002] Mold vibration technology is one of the core technologies of high-efficiency continuous casting, and its main purpose is to prevent the billet shell from sticking to the mold wall. With the acceleration of the production rhythm and the improvement of the surface quality requirements of the slab, it is necessary to ensure the surface quality of the slab while realizing the demoulding, which puts forward higher requirements for the mold vibration device and control technology. [0003] There are mainly two modes of crystallizer vibration, sinusoidal vibration and non-sinusoidal vibration. Sinusoidal vibration depends entirely on the two parameters of vibration frequency and amplitude, and the ability to control the vibration waveform is limited, so it has disadvantages such as long neg...

AI Technical Summary

Problems solved by technology

The acceleration of the combination function model has a sudden change in the transition zone, causing a flexible impact on the drive device; patent CN106311995A constructs a non-sinusoidal vibration waveform through a seven-segment function, which involves many parameters, the function structure is complex, and the control ability is poor; the patent CN101642801 uses a three-segment function to construct Non-sinusoidal vibration waveform, however, there is a sudden change in acceleration, which will have an impact on the equipment and cause chatter

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