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Non-sinusoidal waveform generator used for mold oscillation

A waveform generator and crystallizer vibration technology, which is applied in the direction of instruments, mechanical oscillation control, non-electric variable control, etc., can solve the problems of acceleration deformation, equipment flutter, and the deflection rate should not be too large, so as to reduce vibration marks and equipment Smooth operation and improved surface quality

Active Publication Date: 2009-09-23
CISDI ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, the method of composite curve is widely used, but this waveform has a big disadvantage that the skew rate should not be too large, otherwise there will be acceleration deformation, which will cause equipment chatter

Method used

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  • Non-sinusoidal waveform generator used for mold oscillation
  • Non-sinusoidal waveform generator used for mold oscillation
  • Non-sinusoidal waveform generator used for mold oscillation

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the invention will be further described:

[0025] A non-sinusoidal waveform generator for crystallizer vibration, including: a signal input module: used to input the amplitude, frequency, and skew rate of the non-sinusoidal waveform; three parameters are determined, and a curve is defined. Waveform generation module: It receives the amplitude, frequency, and skew rate of the signal input module, and generates corresponding waveforms; the waveform generation module performs the following functions:

[0026] s = A h x Σ m = 1 n ( - Δ ) ( m - 1 ) Sin ( mωt ...

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Abstract

The invention discloses a non-sinusoidal waveform generator used for mold oscillation, comprising a signal input module, a waveform generation module and a waveform output module, wherein the signal input module is used for inputting the amplitude, the frequency and the deviating rate of the non-sinusoidal waveform; the waveform generation module is used for receiving the amplitude, the frequency and the deviating rate of the signal input module to generate corresponding waveform; and the waveform output module is used for outputting the waveform generated by the waveform generation module to an oscillation controller. The waveform generation module executes the following function: s is equal to Ah x*(-delta)<m-1>Sin(m omega t). The non-sinusoidal oscillation waveform generated by the waveform generator can greatly improve the non-sinusoidal deviating rate, and avoid oscillation during the motion process of the equipment so as to lead the equipment to run smoothly; and the non-sinusoidal oscillation waveform can further greatly improve the negative slip time and the effective control range of the negative slip rate, minimize the friction force between the molten steel and the casting mold, reduce oscillation marks on the surface of casting blank and improve the surface quality of the casting blank.

Description

technical field [0001] The invention relates to the automatic control of crystallizer vibration of a non-sinusoidal vibration curve continuous casting machine, in particular to a non-sinusoidal waveform generator for crystallizer vibration. Background technique [0002] The use of non-sinusoidal vibration mode in the production of modern continuous casting machine crystallizer has become a necessary key technology, which has a very obvious effect on the improvement of the surface quality of the slab. At present, the new domestic continuous casting machines, especially the slab continuous casting machines, almost all use hydraulic or electric non-sinusoidal vibration to better control the negative slip time, reduce the friction between the molten steel and the mold, and reduce the slab. Vibration marks on the surface improve the surface quality of the slab. [0003] In the existing non-sinusoidal displacement waveform curve model of crystallizer vibration, the main model for...

Claims

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Application Information

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IPC IPC(8): B22D11/16B22D11/114G05D19/02
Inventor 龙灏唐元政刘吉
Owner CISDI ENG CO LTD
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