Slag line control method of continuous casting crystallizer

A continuous casting crystallizer and control method technology, applied in the field of continuous casting, can solve the problems of individual parts such as erosion and easy fracture, and achieve the effects of reducing labor intensity, prolonging service life, and uniform erosion

Active Publication Date: 2008-07-30
ANGANG STEEL CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a continuous casting mold slag line control method, through the automatic adjustment of the liquid level position given value of the existing continuous casting mold liquid level automatic control system, to solve the problem caused by the inaccurate manual given control The serious corrosion and easy fracture of individual parts caused by the problem, in order to prolong the service life of the submerged nozzle

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  • Slag line control method of continuous casting crystallizer
  • Slag line control method of continuous casting crystallizer
  • Slag line control method of continuous casting crystallizer

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] A continuous casting mold slag line control method of the present invention is based on the existing continuous casting mold liquid level automatic control system, and adjusts its slag layer by continuously and automatically changing the setting value of the system in small amounts as time changes Location. Among them, the adjustment rate (slope) of the system setting value varies with the position of the water outlet and the superimposed part of the liquid level fluctuation.

[0013] The automatic setting of the crystallizer liquid level position of the present invention is through the computer operation screen (MMI) that is connected with the PLC controller of the continuous casting machine, and the automatic adjustment slag line program (such as figure 1 shown) to achieve. Draw several different given function curves on the computer operation scre...

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Abstract

The invention provides a method for controlling a slag line in a continuous casting mould on the basis of the current existed automatic control system of the continuous casting mould. A slag line layer position is adjusted through a set value of an automatic trace changing system which changes with the time; therefore, a submerged nozzle can obtain a continuous, smooth and even dipping and brushing according to an anticipated form. The service life of the submerged nozzle is prolonged, thus solving problems of uneven dipping and brushing caused by manual setting as well as problems caused by the slag line processing, as well as lessening labor intensity of workers. Furthermore, a copperplate galvanization layer of the casting mould is evenly dipped and brushed so as to prolong the service life of the copperplate of the casting mould.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, in particular to a method for controlling the slag layer of a crystallizer of a continuous casting machine. Background technique [0002] The submerged nozzle of the tundish is an important part in the continuous casting production process. It must have the characteristics of resistance to molten steel and slag erosion and erosion, but no matter what material is used, there will be problems of erosion and erosion to varying degrees. Under normal circumstances, after the normal pouring, according to the casting time, people select several slag line positions (generally 2 to 3) manually, and automatically control the liquid level at the selected positions to realize Scattered erosion of submerged nozzles by molten steel and slag lines. Since molten steel and slag erode several different locations on the submerged nozzle, it is easy to form a dumbbell shape on the surface of the nozzle. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18
Inventor 王琳田勇
Owner ANGANG STEEL CO LTD
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