Method and device for measuring and controlling casting powder of continuous caster crystallizer

Abstract

The invention discloses a method and a device for measuring and controlling casting powder of a continuous caster crystallizer. The method comprises the steps as follows: obtaining the position Lslag of casting powder according to the length of a projecting line on one side wall of the crystallizer when laser is projected on the upper surface of casting powder and the side wall of the crystallizer; obtaining the smoothness variation of the surface of casting powder according to the laser projection on the upper surface of casting powder; obtaining the liquid level Lsteel of the crystallizer with a liquid level detection system; obtaining the thickness L of casting powder according to the formula that L equals Lsteel minus Lslag, and the thickness variation of casting powder; and controlling the casting powder feeding operation of casting powder feeding equipment according to the thickness and the thickness variation. The device comprises a crystallizer casting powder position detecting system, the crystallizer liquid level detection system and an automatic casting powder feeding system, wherein the crystallizer casting powder position detecting system comprises a laser source, monitoring equipment, a processor, a main control computer and an on-site display terminal. According to the invention, close-loop control of casting powder can be realized; casting powder feeding quantity can be counted in a real-time manner; and casting powder performance tracking is realized.

Description

technical field [0001] The invention relates to the field of continuous casting automation control, in particular to a method and device for measuring and controlling mold slag of a continuous casting machine mold. Background technique [0002] In continuous casting, the protective pouring from the continuous casting tundish to the crystallizer is used in conjunction with the submerged nozzle and mold slag pouring. The protective pouring is an important guarantee for high-quality continuous casting slabs. Since its development in the 1960s, mold powder has developed into a special continuous casting technology. Heat and absorption of inclusions are not only the guarantee for the continuous casting process to run smoothly, but also the decisive factors for the surface and skin quality of the slab. [0003] In the continuous casting process, mold slag is added to the liquid surface of the mold, and after absorbing the heat provided by the high-temperature molten steel, a thre...

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Problems solved by technology

[0005] The object of the present invention is to provide a method and device for real-time detection of the slag position, slag thickness and mold slag thickness distribution changes of the continuous casting machine mold slag, so as to solve the problem of real-time measurement and control of the continuous casting machine mold slag, and more Realize the addition of mold powder well

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