| 摘要 |
<p>PURPOSE:To automatically suppress the fluctuation in the width size of a rolled stock and to shorten the offgage in the front and tail end parts thereof by combining N pieces of speed control means, (N-1) pieces of tension control means, (N-1) pieces of tension detecting means, (N-1) pieces. of temp. detecting means, (N-1)pieces of adder means, etc. to make size control. CONSTITUTION:A material 1 to be rolled is rolled by rolling mills 10, 20, 30 in this order. The speed control means VC1 of the rolling mill 10 controls the rotating speed of a motor M1 in accordance with the correction target value of the circumferential speed of the rolling mill rolls. The tension control means TC1 calculates the correction rate of the circumferential speed of the rolls in accordance with the deviation between the detected value of the tension detected by the tension detecting means and the target value of the tension correction of the material 1. The correction rate of the target value of the tension by the means A1 for calculating the tension correction rate and the tension target value of the material 1 between the rolling mills are added to determine the correction target of the tension between the rollings by the adder means. The width size of the rolled stock is automatically controlled by the functions of said respective means, by which the offgage at the front and tail ends is shortened.</p> |
