| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent variation in width attendant on the change of rolling speed without troubles such as the breaking of sheet. SOLUTION: In the cold tandem rolling, by preliminarily determining the influence of rolling load and controlled variable of shape controlling means to the variation of width of a material to be rolled, influence of rolling load and shape controlled variable to the difference of extensional strain in the end parts of the width of the material to be rolled and the middle part and relation between rolling speed and rolling load for every kinds of steel and every thicknesses and controlled variables which are necessary to make fall the sum of the variations in width which are generated at each stand in accordance with the change of rolling speed in a prescribed range and the proper controlled variable of the shape controlling means is calculated for every stand in a range where the difference of extensional strain in the end parts of width and the middle part which is generated at each stand is not lowered than the prescribed limit value and the shape controlling means at each stand is controlled.</p> |
