Non-sinusoidal vibration method for continuous casting crystallizer

Abstract

The invention discloses a non-sinusoidal vibration method for a continuous casting crystallizer. According to the technical scheme, the non-sinusoidal vibration method for the continuous casting crystallizer comprises controlling a driving device of the continuous casting crystallizer to enable the continuous casting crystallizer to perform non-sinusoidal vibration according to speed waveforms which are confirmed according to following functions in every vibration period with the driving of the driving device; enabling the vibrating process of every vibration period to be formed by seven sections; enabling the crystallizer to move according to a given vibrating method due to control of the driving device of the crystallizer and achieving the non-sinusoidal vibration. The non-sinusoidal vibration method for the continuous casting crystallizer has the advantages of being smooth and continuous in displacement and speed waveform, having no mutation in accelerated speed, not generating rigid and flexible impact and having good waveform dynamic characteristics and enabling the largest accelerated speed of the movement of the crystallizer to be served as a quantity which is reflected in the waveforms, enabling the quantity to be allowed setting according to actual conditions and to be invariant, increasing waveform deflection rate, enabling non-sinusoidal vibration of the crystallizer to be enhanced but the accelerated speed of the vibration of the crystallizer to be kept constant and guaranteeing movement smoothness of the crystallizer.

Description

technical field [0001] The invention belongs to the field of continuous casting steel, in particular to a non-sinusoidal vibration method of a continuous casting crystallizer. technical background [0002] Continuous casting mold vibration is an indispensable process operation in the continuous casting process. The form of continuous casting mold vibration has experienced rectangular wave vibration, trapezoidal wave vibration, sine wave vibration, and non-sinusoidal wave vibration after that. Sine wave vibration is widely used at present. The characteristics of the sine wave vibration law are that the vibration velocity (or displacement) is a sine wave, the displacement, velocity, and acceleration waveforms are smooth and continuous, and there is a negative sliding time. The cracked shells can be welded during the negative sliding time to avoid Adhesive leakage accident. With the development of continuous casting technology and the adoption of mold slag casting process, th...

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Problems solved by technology

[0005] The article published on the 178th page of the Journal of Mechanical Engineering, Volume 40, No. 11, 2004, and the Chinese patent announcement number are CN2333463Y, and its name is a sawtooth vibration generating device for continuous casting crystallizers. Both disclose the non-sinusoidal vibration method realized by elliptical gears. A pair of elliptical gears with the same shape are used to mesh, and the eccentric shaft is driven to realize non-sinusoidal vibration of the crystallizer, and its acceleration increases with the increase of the waveform skew rate; Chinese Patent Publication No. CN102847894A, published on January 02, 2013, the application The proposal discloses a non-sinusoidal vibration method for continuous casting molds with adjustable waveforms. The displacement, velocity, and acceleration waveforms are all continuous, and the waveform deflection rate is in the range of 0 to 37.5%. increases with increasing slope

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