METHOD FOR CONTROLLING INTERSTAND TENSION OF MATERIAL OF CONTINUOUS ROLLING MILL, MANUFACTURING METHOD OF STEEL PLATE, AND DEVICE FOR CONTROLLING INTERSTAND TENSION OF MATERIAL OF CONTINUOUS ROLLING MILL

• Main Authors: TAKAGI HIROMASA, TANIMOTO SUNAO
• Format: Patent
• Language: English; Japanese
• Published: 14.06.2018
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a method for controlling an interstand tension of a material of a continuous rolling mill which can accurately control the interstand tension of the material of the continuous rolling mill, a manufacturing method of a steel plate, and a device for controlling interstand tension of the material of the continuous rolling mill.SOLUTION: A method for controlling an interstand tension of a material of a continuous rolling includes a tension estimation control process which continuously estimates the interstand tension of the material by a sequential estimation process on the basis of rolling torque and rolling load at respective stands, and controls the interstand tension of the material on the basis of the estimated value of the interstand tension of the material. The method includes a renewal process in which a parameter value corresponding to a renewal gain of an estimation value renewal expression in the sequential estimation process is changed to be larger than at least current value.SELECTED DRAWING: Figure 4 【課題】連続圧延機のスタンド間材料張力を高精度に制御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、その推定された前記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、逐次推定処理における推定値更新式の更新ゲイン相当のパラメータの値を、少なくとも現在の値よりも大きくなるように変更する処理を含む。【選択図】図４