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Drive roller, a metallurgical term used in the steel and metallurgical industry, consists of a composite roller, a connecting plug, and a roller shaft. It is a hollow body with a simple structure. The composite roller is composed of an outer layer of wear-resistant rubber and a fiberglass roller. The composite roller is firmly connected to the roller shaft with a connecting plug. The low precision of the gap between the driving rollers in the sector section can lead to an increase in the level of central segregation of the billet, which affects the quality of the billet. This has been elaborated in many literature. Although the effect of improving center segregation can be achieved through soft reduction technology, if the gap of the driving roller in the sector section participating in soft reduction exceeds the tolerance, it will cause bulging near the solidification end of the billet, directly affecting the quality of the slab.

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