SNAKING CONTROL METHOD AND TANDEM PLATE ROLLING MILL FACILITY LINE.

摘要

In a tandem rolling operation for metal plates, a snaking control method for securing stable plate transfer of rolled material including rollings at front and rear end portions and a tandem rolling facility line constituting a prerequisite therefor are disclosed. In a snaking control method for a tandem plate rolling mill comprising two or more rolling mills, a rolled material tension measuring device having tension detectors provided independently on operating and driving sides, respectively, and a width-wise direction plate transfer position measuring device for rolled material, the latter two devices being disposed between the rolling mills, a width-wise direction plate transfer position of rolled material at the location of the rolled material tension measuring device is directly detected or estimated from an output from the width-wise direction plate transfer position measuring device, the difference in tensions between the operating and driving sides which are actually acting onto the rolled material at the location of the rolled material tension measuring device is operated from the result of the detection or estimation so performed and outputs from the detectors of the rolled material tension measuring device provided, respectively, on the operating and driving sides, and the difference between set pressing values on the operating and driving sides of the respective rolling mills is controlled so as to make the difference in tension zero.