Measuring method and measuring apparatus for the thickness of molten layer of mold powder and fluctuation of liquid level of molten steel

Abstract

The invention provides a measuring method and measuring apparatus for the thickness of a molten layer of mold powder and fluctuation of liquid level of molten steel. The measuring device comprises a tripod assembly, a metal rod, a plurality of metal wires, a tripod fixing device, a horizontal locator and a rotatable metal screw. The horizontal locator comprises a horizontal locating sheet metal and at least one scale. The tripod assembly comprises a tripod and a tripod fixing plate, a tripod fixing device comprises a vertically lifting adjusting screw and a rotatable head, and the vertically lifting adjusting screw is threaded to the tripod fixing plate. The rotatable metal screw is horizontally fixed to the vertically lifting adjusting screw, and the plurality of metal wires are arranged in the direction of rotatable metal screw and threaded to the rotatable metal screw at intervals. The horizontal locating sheet metal is fixed to the rotatable metal screw, and the scale is perpendicularly welded to the metal rod at intervals. By adopting the measuring method and the measuring apparatus, the thickness of a molten layer can be accurately measured, and the fluctuation of the liquid level of the molten steel can be reflected.

Description

technical field [0001] The invention relates to an auxiliary measurement method and device for continuous casting production, in particular to a method and device for measuring the thickness of the mold slag melting layer and the fluctuation of the liquid steel level. Background technique [0002] During the continuous casting pouring process, the mold slag enters the crystallizer and melts continuously under the action of high-temperature molten steel, forming a three-layer structure, namely, a molten layer, a sintered layer, and a raw slag layer. On-site measurement of the thickness of the molten layer of mold slag is generally done by inserting a copper-plated iron wire, using the difference in the melting points of copper and iron to detect the thickness of the mold slag. During the detection process, the operator holds the copper-plated iron wire, roughly selects a place 1 / 4 away from the wide and narrow sides of the crystallizer by visual inspection, inserts the copper...

AI Technical Summary

Problems solved by technology

However, this method puts the measuring plate into the crystallizer, which may affect the flow field distribution in the mold and affect the quality of the slab. In addition, the metal consumption of the measuring plate is relatively large, and the measuring plate is inserted into the molten steel to feed the molten steel. The purity of the

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