SELF-OSCILLATION OF THE TENSION STATIONS OF AN ETCHING UNIT COMBINED WITH THE TANDEM COLD-ROLLING MILL 2000

On multi-cage cold rolling mills combined with a continuous etching unit, self-oscillations can occur not only on the mill stands but also tensioning stations of unit. Fatigue cracks appear rollers tension stations, and characteristic defects surface polyurethane-coated roller. To measure self-oscillations, MEMS accelerometers are installed roller bearing supports. The collection vibrational data takes place in parallel measurement technological parameters. Time series databases used for storage. hybrid database allows simultaneous processing When an emergency situation occurs, it is possible to chart dependence Using results industrial experiment, was obtain friction rolled strip station at low movement speeds. At band speeds from 0.5 m/s 1 m/s, transient mode be either positive or negative. With negative friction, self-oscillation appears, characteristic, belt stabilizes. Signal carried out using Fast Fourier Transform (FFT). According spectral determine number complete cycles acting oscillatory system. Having sufficient amount information time, calculate estimate residual resource before end surfaces station.