Device and method for measuring thickness of casting powder in continuous casting crystallizer
A continuous casting crystallizer and thickness measurement technology, applied in the configuration of indicating equipment/measuring equipment, casting equipment, manufacturing tools, etc., can solve problems affecting the quality of steel billets, achieve the effects of cost reduction, accurate measurement, and saving mold slag
Active Publication Date: 2021-06-22
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology
[0005]
The object of the present invention is to provide a device and method for measuring the thickness of mold slag in the continuous casting mold, so as to solve the problem that the mold slag thickness in the mold seriously affects the quality of the billet during the steelmaking and continuous casting production process, and the amount of slag added is too high. Both large and small will cause different degrees of impact
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[0014] The specific embodiment of the present invention is described below in conjunction with accompanying drawing:
[0015] Millimeter wave electromagnetic waves can propagate well in the air, so non-contact distance measurement can be performed at long distances. In addition, electromagnetic waves are reflected and transmitted at the interface between different materials. The waves reflected from the surface and back of the measurement object can be measured, so that the thickness of the object can be measured. The speed of millimeter wave depends on the relative permittivity of the propagating material, and the relative permittivity of air hardly changes due to different temperatures. In addition, the wavelength is at the millimeter level, and micron-sized particles like dust will not affect the propagation of millimeter waves . Therefore, millimeter waves are especially suitable for continuous casting sites.
[0016] The present invention adopts LFMCW (Line Frequency Mo...
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The invention discloses a device and method for measuring the thickness of casting powder in a continuous casting crystallizer, and belongs to the technical field of continuous casting crystallizer control. The device comprises an installation support and a linear frequency modulation continuous wave radar. The linear frequency modulation continuous wave radar comprises a transmitting antenna, a receiving antenna and an echo signal processing system. The linear frequency modulation continuous wave radar is installed above continuous casting crystallizer casting powder through the installation support, and the linear frequency modulation continuous wave radar is used for transmitting electromagnetic wave signals through the transmitting antenna. The echo signal is subjected to frequency mixing, amplification and filtering through an echo signal processing system and then converted into a difference frequency signal containing distance information, and the difference frequency signal is processed through the echo signal processing system to obtain the thickness of a coating powder layer and the surface position information of the coating powder layer. The method is realized through the device. According to the invention, the thickness of the casting powder can be accurately measured. Meanwhile, the casting powder can be saved and the cost can be reduced by accurately mastering the thickness of the casting powder.
Description
technical field [0001] The invention relates to the technical field of continuous casting mold control, in particular to a device and method for measuring the thickness of mold slag in a continuous casting mold. Background technique [0002] The continuous casting crystallizer is a molten steel refrigeration forming equipment. It is basically composed of frame, water tank and copper plate (back plate and copper plate), adjustment system (adjustment device, reducer, etc.); lubrication system (oil pipe oil circuit), cooling system and spraying and other equipment. [0003] The inner wall of the crystallizer bears the combined effects of mechanical stress and thermal stress generated by the static pressure of the high-temperature molten steel and the frictional force of the relative movement with the slab shell, and its working conditions are extremely harsh. [0004] The mold slag in the mold forms a powder-liquid two-layer structure on the molten steel, and the thickness of ...
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IPC IPC(8): B22D11/16B22D2/00
CPCB22D11/165B22D2/00
Inventor 王志春张琦翔
Owner INNER MONGOLIA UNIV OF SCI & TECH
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