| 摘要 |
PROBLEM TO BE SOLVED: To calculate a roll gap for obtaining a target plate thickness with a higher precision by improving the learning method for a gage meter error in a plate thickness control method using the gage meter system.SOLUTION: In a plate thickness control method for controlling a roll gap of a rolling machine that rolls rolling materials W, an amount of mill elongation during rolling is obtained from an actual value of an exit side plate thickness in a plurality of paths before a present path and a roll gap set value to obtain the relational expression (P=f(δ)) between the obtained amount of mill elongation and an actual value of a rolling load. In roll gap setting of a next path, a rolling load is obtained from a target plate thickness to obtain an amount of mill elongation in a next path by using the relational expression (P=f(δ)), and a roll gap amount in a next path is calculated and set by subtracting the amount of mill elongation obtained from a target plate thickness of a next path.SELECTED DRAWING: Figure 7 |
