特厚板坯连铸机驱动辊辊缝控制技术研究

为了减小400 mm特厚板坯中心偏析，通过扇形段拉杆补偿校验、驱动辊机械限位机构螺栓优化、驱动梁结构优化改进等措施，驱动辊辊缝度得到了很好控制，铸坯内部质量得到了提高，中心偏析控制在C类2.0以下。结果表明：铸坯的中心偏析与铸坯凝固末端轻压下压下位置附近的驱动辊辊缝有着密切的联系，对轻压下位置附近的驱动辊辊缝进行严格控制，能有效减少铸坯中心偏析。

Study on roll gap control technology of the drive roller during ultra-thick slab process

In order to reduce the central segregation of 400 mm ultra-thick slab，?several measures were?taken，?such as checking tie rod compensation in fan section，controlling the drive roller mechanical limiting mechanism bolt，and optimizing the structure of drive beam，that the roll gap of the drive roller was well controlled，the internal quality of slab was well improved，and the central?segregation?was?controlled?in class?C?2.0?or?below.?The?results?show that the central?segregation of slab?was?closely?related?to?the?roll?gap of?drive roller at solidification end during soft reduction. Strictly?controlling the?roll gap of the drive roller can?reduce?the?central?segregation effectively.