| 摘要 |
A system and method for producing thin cast strip by continuous casting are disclosed. The system includes a twin-roll casting apparatus having a pair of casting rolls (22) positioned laterally adjacent each other to form a nip between the casting rolls through which metal strip may be continuously cast. A drive mechanism including separate drive motors (320, 330) is capable of individually driving the casting rolls (22) through drive shafts (311, 312) in a counter-rotational direction to cause the strip to pass through the nip between the casting rolls. A control mechanism of the system is capable of varying a rotational alignment angle between the casting rolls (22) to reduce effects of eccentricity in the casting rolls on a profile of the strip produced by the casting rolls. The control mechanism includes a motor controller/driver (340) which receives feedback signals (371) from a strip sensor (370) that senses variations in the thickness profile of the strip as it moves away from the casting rolls (22) and further signals (351, 361) indicative of angular positions ωand ωof the casting rolls obtained from sensors (350, 360) which sense angular positions of drive shafts (311, 312). |
