CONTROL DEVICE OF CONTINUOUS ROLLING MILL

• Main Authors: ENDOU TOSHIO, NAKAI KOUZOU
• Format: Patent
• Language: English
• Published: 02.10.1984
• Edition: 3
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PURPOSE:To improve the yield of a steel strip by eliminating an error of the sheet thickness at the outlet side of a mill, resulting from an estimated error of a rolling load, and an error of the sheet thickness at the same side, resulting from the change with time of a roll gap. CONSTITUTION:A control device of a continuous mill is provided with a load meter for measuring a rolling load and a device for controlling a roll gap of work rolls of the mill. At the time of changing a rolling schedule, the changing quantity DELTAP1 of the rolling load is calculated by the equation basing on the value PA1 of an actual rolling load of a rolling mill at the present rolling and the value of estimated rolling load P1 of the mill. The roll gap controlling device controls the roll gap by this changing quantity DELTAP1 to correspond to the change of the rolling schedule.