| 摘要 |
In a tandem mill a roll current for a first mill stand is measured after a workpiece has entered only the first stand and after it has also entered a second stand. A difference between the measured currents predicts a speed correction factor for the second stand by which the speed of the second stand is modified. Then the roll current for the first stand is again measured and the speed of the second stand is adjusted so as to put a difference between the first and third measured current within predetermined limits. Otherwise, the above process is repeated until a difference between the first and last measured currents is put in the limits. The last speed correction factor determined is stored in a computer.
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