CONTROL METHOD OF PLATE THICKNESS IN WIDTH DIRECTION OF ROLLING MATERIAL

摘要

PURPOSE:To obtain a uniform plate thickness in longitudinal direction and width direction by providing independently a bending device at work side and driving side and by performing an automatic plate thickness control and bender control successively at each stand with performing the load distribution control for each stand of the operation quantity. CONSTITUTION:The weight co-efficient of the bender operation quantity of a work side and driving side is determined with measuring the thickness of a rolling material 10 by the thickness gage 12 of the outlet side of the final stand 20 of a continuous rolling mill and a scanning type thickness gage 14 and with calculating a wedge rate and the plate thickness distribution curves in width direction by an arithmetic unit 28. The information of a rolling constant is fed to a subordinate computer 30 from a host computer 38 and the subordinate computer 30 takes in the signal transmitted from a reaction force gage 22 and pressure detectors 24, 26. The automatic plate thickness control and bender control are successively performed then with commanding to automatic plate thickness control system 32 and bending control system 34, 36 of the work side and driving side.