摘要
通过对某钢厂冷轧带钢表面的振动痕形貌特征和产生机理进行研究分析,得出振动痕由两种途径产生:一是轧机发生一定频率的振动,振动传递至带钢表面形成振动痕;二是轧辊表面已有振动痕复印至带钢表面.主传动轴、轧辊辊系、轧辊轴承和工艺润滑是影响振动痕的主要因素,通过控制轧辊表面振痕、监控主传动轴磨损状态、控制轧辊圆度和轴头磨损、定期清洗轧辊轴承、改变轧制速度、保持良好工艺润滑条件等措施,使冷轧带钢表面振动痕缺陷得到有效控制.
Abstract
Through the study and analysis of the appearance and mechanism of the chatter marks in a steel mill,it is concluded that the chatter marks are generated through two pathways.Firstly,the rolling mill generates vibrations at a certain frequency,which directly act on the surface of the strip steel to produce chatter marks.Secondly,the existing chatter marks on the surface of the rolls are transferred to the surface of the steel strips.The main drive shaft,roller system,roller bearings,and process lubrication are the main factors affecting the chatter marks.It is possible to control the occurrence of the marks by some measures such as checking the marks on the surface of rolls,monitoring the wear status of the main drive shaft,controlling roll roundness and shaft head wear,cleaning the roller bearings regularly,changing the rolling speed,and maintaining good process lubrication conditions.
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