| 摘要 |
A twin roll-type vertical casting device (1) for producing a sheet (2) from an aluminum material is provided with: a pair of casting rolls (11, 12) that are arranged opposite each other with a predetermined roll gap (13) therebetween, that rotate at the same circumferential speed as one another around parallel rotational axes (111, 121), and that are elastically biased toward a direction in which said casting rolls (11, 12) approach one another; a molten metal nozzle (14) that is arranged above the roll gap of the pair of casting rolls and that receives a molten metal (5) of the aluminum material, said molten metal nozzle (14) comprising a pair of main barrier plates (141, 142) arranged opposite each other in a direction parallel to the rotational axes and a pair of side barrier plates (143, 144) that are arranged opposite each other in a direction orthogonal to the rotational axes and that are in close contact with both end surfaces of the pair of main barrier plates; a reaction force estimation device (15) for estimating the reaction force that results when molten metal passing through the roll gap resists the elastic biasing force and tries to push and expand the roll gap; and a control unit (16) that controls the received heat amount per unit of time received by the pair of casting rolls from the molten metal passing through the roll gap in accordance with the reaction force estimated by the reaction force estimation device. The control unit controls so that the received heat amount per unit of time decreases as the reaction force increases and the received heat amount per unit of time increases as the reaction force decreases. |
