热轧时,轧辊与灼热的轧件相接触,并要承受由于金属变形而产生的巨大的轧制压力,此时,轧辊表面的瞬时温度可达500～600℃,为此,必须向轧辊喷以大量的冷却水进行冷却。在这种恶劣条件下工作的轧辊,会产生龟裂,表面严重磨损,甚至会发生剥落、掉皮等缺陷而降低轧辊的寿命。因此,如何解决轧辊消耗过大,频繁地换辊,影响作业时间,降低产品质量等,成为热轧厂 During hot rolling, the rolls are in contact with the hot rolling stock and are subjected to a great rolling pressure due to the deformation of the metal. In this case, the instantaneous temperature of the rolls can reach 500 to 600 ° C. To this end, Cool with plenty of cooling water. Rollers that work under these harsh conditions can crack, have serious surface wear, and even suffer from flaking, peeling, and other defects that reduce the life of the rolls. Therefore, how to solve the roller consumption is too large, frequent roll change, affect the operation time, reduce product quality, become hot-rolled plant