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連続鋳造機の鋳型内の湯面レベルを検出する湯面レベル計と、該湯面レベル計により検出される湯面レベルと予め設定した設定湯面レベルとに基づいてタンディッシュに設けられたスライディングノズルの開度指令を出力する制御装置と、前記湯面レベル計により検出される湯面レベルに基づいて或る特定の周波数帯の外乱を補償するための制御演算を行う外乱補償器と、を備えた鋳型内湯面レベル制御装置を用いて、鋳型内の湯面レベルを前記設定湯面レベルと一致するように制御する鋳型内湯面レベル制御方法において、前記外乱補償器の設定周波数を、鋳造速度または湯面レベルの変動周波数に基づいて変更することを特徴とする、連続鋳造機の鋳型内湯面レベル制御方法。
Sliding provided on the tundish on the basis of the molten metal level detected by the molten metal level in the mold of the continuous casting machine and the preset molten metal level detected by the molten metal level A control device that outputs a nozzle opening degree command, and a disturbance compensator that performs a control calculation for compensating for a disturbance in a specific frequency band based on the molten metal level detected by the molten metal level meter. In the mold level control method in which the mold level in the mold is controlled to match the set mold level by using the mold level control apparatus provided in the mold, the set frequency of the disturbance compensator is set as the casting speed. Alternatively, the mold level control method in the mold of the continuous casting machine, wherein the level is changed based on the fluctuation frequency of the mold level.
前記外乱補償器を、湯面レベル信号の位相を進めるフィルタで構成するか、或いは、湯面レベル信号の位相を進めるフィルタと、低周波のノイズをカットするハイパスフィルタ及び／または高周波のノイズをカットするローパスフィルタと、で構成し、構成されたそれぞれの外乱補償器について設定周波数を変更することを特徴とする、請求項１に記載の連続鋳造機の鋳型内湯面レベル制御方法。
The disturbance compensator is configured by a filter that advances the phase of the molten metal level signal, or a filter that advances the phase of the molten metal level signal, a high-pass filter that cuts low frequency noise, and / or high frequency noise. low pass filter and, in constructed, characterized in that to change the set frequency for each of the disturbance compensator is configured, mold molten steel surface level control method of continuous casting machine according to claim 1.
請求項１または請求項２に記載の連続鋳造機の鋳型内湯面レベル制御方法を用いて鋳型内の湯面レベルを制御しながらスラブ鋳片を製造することを特徴とする、連続鋳造鋳片の製造方法。
A slab slab is produced while controlling the molten metal surface level in the mold using the method of controlling the molten metal surface level in the mold of the continuous casting machine according to claim 1 or2 . Production method.
JP2005315707A2005-02-252005-10-31
Method for controlling level of mold surface in continuous casting machine and method for producing continuous cast slab
ActiveJP4725291B2
(en)
Speed synchronization system of aluminum alloy slab continuous casting and rolling line and production facility and method of production of aluminum alloy continuously cast and rolled slab using same