Device and method for detecting the flow state of molten steel in crystallizer

Abstract

The invention relates to a device and a method for detecting the flow state of molten steel in a crystallizer. The device comprises a funnel (7), a tail fin (8) and an indicator bar (6), wherein the funnel (7) is soaked in the molten steel (20) of a crystallizer and fixedly connected with the tail fin (8), the indicator bar (6) is fixedly connected with the upper part of the funnel (7) and can berotatably and axially supported on an indicator disc (5) through a rotating bearing (17), the indicator disc (5) can make planar rotation relative to a tray (4), the upper end of the indicator bar (6) which is rotatably and axially supported on the indicator disc (5) is connected with a pull rod (2) which is stuck to a stress strain foil (15), and a signal transmission line (16) is connected to asignal collector by the stress strain foil (15) on the pull rod (2). The device and the method of the invention can favorably detect the flow speed and the flow direction of the molten steel, provideevidence for adjusting the parameters of a steel casting process and further achieve the aims of improving the surface quality of casting blanks and reducing steel casting and bleeding accidents. Thedevice and the method of the invention have wide application prospects in the continuous casting production field.

Description

technical field [0001] The present invention relates to the field of detection in metallurgical processes. Specifically, the present invention relates to a detection device and method for the flow state of molten steel in a crystallizer. direction is detected. Background technique [0002] In the slab continuous casting production process, the surface flow velocity and flow direction of the molten steel in the mold are the key indicators that directly determine the surface quality of the slab. As the upstream material of automobile sheet, etc., the good surface quality of slab is the key to determine whether the cold-rolled automobile sheet is qualified. For this reason, many slab continuous casting machines in iron and steel metallurgical enterprises at home and abroad have adopted measures such as reasonable selection of submerged nozzle inclination angle, increased mold electromagnetic stirring, and reasonable control of argon flow to adjust the flow rate and direction o...

AI Technical Summary

Problems solved by technology

[0005] However, because the transformation process is too complicated and there are too many influencing factors in the middle, such as large changes in the thickness of mold flux and unstable liquid level, etc., it is easy to cause inaccurate detection by the eddy current detector, and it is difficult to accurately obtain the level of the flow rate. Especially it is very difficult to detect the direction of flow

[0006] 2. For the detection of some normal temperature fluids (including chemical fluids), propellers, electromagnetic rods, etc. are used for flow velocity and flow direction detection, and the accuracy is relatively high. still blank

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