INTER-STAND MATERIAL TENSION CONTROL METHOD FOR CONTINUOUS ROLLING MILL, MANUFACTURING METHOD FOR STEEL PLATE, AND INTER-STAND MATERIAL TENSION CONTROL DEVICE FOR CONTINUOUS ROLLING MILL

• Main Authors: TAKAGI HIROMASA, NISHIURA NOBUO, IIJIMA KEIJI
• Format: Patent
• Language: English; Japanese
• Published: 11.07.2019
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

To provide an inter-stand material tension control method for a continuous rolling mill that is able to highly accurately control the tension of a material between stands in a continuous rolling mill, and to provide a manufacturing method for a steel plate, and an inter-stand material tension control device for the continuous rolling mill.SOLUTION: An inter-stand material tension control method for a continuous rolling mill has a tension estimation control step in which on the basis of rolling torque and rolling load in each of stands, the tension of a material between stands is sequentially estimated by a sequential estimation process and, on the basis of the estimated value of the tension of the material between the stands, the tension of the material between the stands is controlled. In the tension estimation control step, the tension of the material between the stands is estimated using a corrected rolling torque arm coefficient calculated by multiplying the value of a rolling torque arm coefficient used in the sequential estimation process by a predetermined correction coefficient.SELECTED DRAWING: Figure 3 【課題】連続圧延機のスタンド間材料張力を高精度に制御することができる連続圧延機のスタンド間材料張力制御方法、鋼板の製造方法、及び、連続圧延機のスタンド間材料張力制御装置を提供すること。【解決手段】連続圧延機のスタンド間材料張力制御方法であって、各スタンドにおける圧延トルク及び圧延荷重に基づいて、逐次推定処理によりスタンド間材料張力を時々刻々と推定し、その推定されたスタンド間材料張力の推定値に基づいて、スタンド間材料張力を制御する張力推定制御工程を有しており、張力推定制御工程において、逐次推定処理で用いる圧延トルクアーム係数の値に、所定の補正係数を乗じて算出した補正後圧延トルクアーム係数を用いてスタンド間材料張力を推定する。【選択図】図３