六辊冷轧机工作辊正负弯辊平滑过渡系统  

Smooth transition system for positive and negative bending of work roll of six-high cold rolling mill

作　　者：魏志毅[1] 魏维刚[1] 尤磊[1] 宋春阳 WEI Zhi-yi;WEI Wei-gang;YOU Lei;SONG Chun-yang(China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710032,China;Changde Zoomlion Hydraulic Co.,Ltd.,Changde 415001,China)

机构地区：[1]中国重型机械研究院股份公司,陕西西安710032 [2]常德中联重科液压有限公司,湖南常德415001

出　　处：《轧钢》2020年第2期77-78,82,共3页Steel Rolling

摘　　要：介绍了六辊冷轧机工作辊弯辊的工作原理,在正负弯辊切换过程中,弯辊缸蘑菇头与工作辊轴承座处于非接触状态,蘑菇头需要走一段空行程才能与工作辊轴承座接触上,在此过程中工作辊弯辊处于失控状态,不能实现正弯与负弯的平滑过渡,导致此过程中带材的板形不能得到有效地控制。为此,在原系统及结构的基础上,在镶块上增加了2个辅助弯辊油缸,在正负弯切换过程中,油缸蘑菇头始终与轴承座接触,其作用力作用在轴承座上,故弯辊力可以始终处于受控状态,从而使正弯、负弯切换过程中带材的板形得到有效控制。The working principle of work roll bending of a six-high cold rolling mill was introduced.During the switching process of positive and negative bending,the mushroom head of the bending roll cylinder and the work roll bearing seat were in a non-contact state,the mushroom head need to travel for an empty stroke to contact the work roll bearing seat,and the bending roll was out of control during this process.The smooth transition between positive and negative bending can not be achieved,which resulting in that the strip shape can not be effectively controlled in this process.For this reason,on the basis of the original system and structure,two auxiliary bending roll cylinders were added.During the positive and negative bending switching process,the mushroom head of the oil cylinder were always contacted the bearing seat,and the force were acted on the bearing seat.Therefore,the bending roll force could always be controlled,so that the strip shape could be effectively controlled during the switching between positive and negative bending.

关 键 词：冷轧机 工作辊弯辊 弯辊油缸 蘑菇头 板形 

分 类 号：TG333[金属学及工艺—金属压力加工]