| 摘要 |
<p>PURPOSE:To keep rolling without tension and to obtain shaped steel, bar steel with a few runout from tolerance by adding compensation so that the velocity of the rolling mill of following stages is also decreased if the temperature change is generated in the longitudinal direction of a material to be rolled, the deforming resistance is increased and the tension is generated in the material to be rolled. CONSTITUTION:In a state that the top end of a material to be rolled 1 is moved from a 1st universal rolling mill and bitten in a 2nd rolling mill, rotation velocities N1C, N2C of a 1st and a 2nd roll drive motors 31, 32 of the 1st and the 2nd rolling mills are detected and stored. The horizontal rolls total load PHIC, the vertical rolls average load PVIC of the 1st rolling rolls 21 are detected and stored, the material to be rolled is further moved and until its tail end is gone out from the 1st rolling mill, the rotation velocities N1D, N2D of the 1st and the 2nd drive motors, the horizontal rolls total load PHID and the vertical rolls average load PVID of rolling rolls of the 1st rolling mill are detected in a prescribed sampling period. The compensating value DELTAN2D of the rotation velocity of the 2nd roll drive motor is corrected so as to satisfy the equation I.</p> |
