| 摘要 |
PROBLEM TO BE SOLVED: To provide a troubleless maximum rolling speed calculation method and a cold tandem rolling method in a cold tandem mill using a rolling load prediction, in acceleration of a rolling speed (roll speed) after changing a running plate thickness in cold tandem rolling.SOLUTION: A maximum rolling speed calculation method includes the steps of: collecting performance data in the rolling speed acceleration every stand; calculating a rolling load prediction value in a predetermined rolling speed; calculating an acceleration limit rolling speed of each stand from the rolling load prediction value, and the relationship between the rolling speed and the rolling load indicating a stable rolling area of each stand; and calculating a balanced rolling speed value group with a balanced mass flow by every stand in the tandem rolling from the acceleration limit rolling speed of each stand. Then, a balanced rolling speed value being a minimum in each stand is used as the maximum rolling speed after changing the running plate thickness, and the rolling is performed. |
