连铸机运行过程中，其足辊粘附了坚硬的异物，使得铸坯表面被严重划伤。本文通过调查分析辊粘物的组成和显微结构后认为：辊粘物的形成是由于铸坯表面的氧化铁皮和结晶器保护渣渣膜，积聚在润滑欠佳的足辊上，经重熔或境结形成坚硬固体，并粘附于足辊。这种坚硬的固体划伤了铸坯表面。 Caster running, the foot roller adhesion of hard foreign matter, making the slab surface was severely scratched. In this paper, by analyzing the composition and microstructure of the roll sticky substance, it is considered that the formation of roll sticky sticky material is caused by the oxide scale on the surface of the slab and mold flux slag film accumulating on the insufficiently lubricated foot roll, Or border formation of a hard solid, and adhesion to the foot roller. This hard solid scratch the slab surface.