Running between gauge alteration setup study manner null of

摘要

PURPOSE:To shorten off-gage length after flying gage change in a cold rolling mill. CONSTITUTION:A material 5 to be rolled is divided into units of several tens cm by data tracking processing 6, the data tracking of measured values is executed and the data after that about places where thicknesses are measured with a thickness gage on the inlet side of the material to be rolled are sampled. The measured values after flying gage change and in the state of low roll speed are inputted to tip part learning processing 7, roll-speed adaptive correction coefficient ZVR and a load adaptive correction coeffient ZP are calculated and stored in a feedback table (feedback table for correction coefficient) 9. In high-speed rolling state, a motor-load adaptive correction coefficint ZM, roll-speed adaptive correction coefficient ZVR and load adaptive correction coefficient ZP are calculated and stored in the feedback table 9. In setup processing (setup estimating calculation) 10, the calculations of the load in the tip part of the following rolled stock, motor load in a high speed part and max. speed are executed using respective adaptive correction coefficients and the result is preset in a screw-down controller 11.