Method for determining deflection displacement-time change relationship in mold vibration
A technology of crystallizer vibration and change relationship, applied in vibration measurement, measurement device, vibration measurement in solids, etc., can solve problems such as breakout, adverse effects on product surface quality, etc.
Active Publication Date: 2013-03-20
CONTINUOUS CASTING TECH ENG OF CHINA
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Problems solved by technology
The metallurgical process requires that the vibration offset of the crystallizer in the X-axis and Y-axis directions perpendicular to the Z-axis direction be as small as possible. The vibration in the Y-axis direction will have a certain yaw displacement, which will have a serious adverse effect on the surface quality of the product in severe cases, and more seriously, will lead to the occurrence of steel breakouts
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[0050] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
[0051] The present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
[0052] figure 1 A schematic diagram of crystallizer vibration is shown. Such as figure 1 As shown, the negative direction of the Z-axis direction is the casting direction of the mold, and the X-axis and Y-axis directions are the transverse vibration directions of the mold. In an embodiment of the present invention, one or more acceleration sensors are placed on one or more sides of the crystallizer along the X-axis and / o...
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The invention discloses a method for determining deflection displacement-time change relationship in mold vibration, which comprises: sampling a displacement signal of the vibration in a throwing direction of a mold by using a displacement sensor arranged in a first direction parallel to the throwing direction of the mold in the mold, and acquiring a vibration period according to the sampled displacement signal; sampling a vibration acceleration in a second direction of the mold by using an acceleration sensor arranged in the section direction which is vertical to the throwing direction of the mold on one or two parallel side faces of the mold; calculating the deflection displacement of the vibration in the second direction at each sampling point in a vibration period of the mold according to the obtained vibration period and the sampled acceleration; and fitting a curve of the change relationship between the deflection displacement in the second direction in a vibration period of the mold and time according to the calculated deflection displacement of the vibration in the second direct at each sampling point.
Description
technical field [0001] The invention relates to a method and device for determining the variation relationship of the crystallizer vibration deflection displacement with time, and the method can accurately fit the relationship curve of the crystallizer vibration deflection displacement with time variation. Background technique [0002] In the metallurgical continuous casting process, the mold is an important part of the continuous casting machine and plays the role of the heart. When the mold is vibrating, the relative position between the molten steel level and the mold wall is periodically changed according to the set vibration curve and vibration parameters, so as to prevent the casting slab from sticking to the mold steel plate during solidification and causing cracks or leaks Accidents, through the penetration of slag in the crystallizer wall, change its lubricity, reduce the friction resistance and the possibility of adhesion during casting, and improve the surface qua...
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IPC IPC(8): B22D11/16B22D11/053G01H1/16
Inventor 白居冰吴鹏许军蔡娥翟翔孙军孙丽娟
Owner CONTINUOUS CASTING TECH ENG OF CHINA