METHOD FOR CONTROLLING THICKNESS IN TANDEM MILL

METHOD FOR CONTROLLING THICKNESS IN TANDEM MILL

PURPOSE:To shorten a control cycle and to improve the thickness accuracy. CONSTITUTION:The thickness deviation e4 from the target thickness on the outlet side of a 4th stand #4 from the detected value with a thickness measuring device SE5 which is arranged on the outlet side of at least one rolling...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: OI TOSHIYA
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To shorten a control cycle and to improve the thickness accuracy. CONSTITUTION:The thickness deviation e4 from the target thickness on the outlet side of a 4th stand #4 from the detected value with a thickness measuring device SE5 which is arranged on the outlet side of at least one rolling stand, for example, the 4th stand $4 of a tandem mill is determined, the output amount c4 of thickness correction is determined by performing proportional-plus-integral calculation on this deviation with a proportional-plus-integral arithmetic unit PI and this output amount is multiplied by control gains G1, G2 with multiplyers 33, 34. The former is outputted to a screw-down location controller 14 as the correction amount of roll gap of the 4th stand #4 and the latter is respectively outputted to roll speed controllers 21, 22, 23 of the 1st to the 3rd stand #1-#3.