铝合金平轧过程中端部自动剪切方法的开发和应用  

Development and application of automatic end shearing method in aluminum alloy flat rolling

作　　者：许磊 蒋婷[2] 陈卫嘉 XU Lei;JIANG Ting;CHEN Wei-jia(School of Mechanical and Traffic Engineering,Guangxi University of Science and Technology,Liuzhou 545006,Guangxi,China;Power Institute,Liuzhou Railway Vocational Technical College,Liuzhou 545006,Guangxi,China;Guangxi Liuzhou Yinhai Aluminium Co.,Ltd.,Liuzhou 545007,Guangxi,China)

机构地区：[1]广西科技大学机械与交通工程学院,广西柳州545006 [2]广西柳州铁道职业技术学院动力学院,广西柳州545006 [3]广西柳州银海铝业股份有限公司,广西柳州545007

出　　处：《中国冶金》2020年第4期37-40,共4页China Metallurgy

摘　　要：基于金属的流动规律,铝合金铸锭在轧至100~150 mm厚度时会在头尾两端部发生"张嘴"现象,需要在重型剪处切除。目前,重型剪操作员依靠目测结果来确定剪切的长度,剪切效率较低。当剪切长度不合适时,将造成较大的浪费。利用工业CCD摄像机所拍摄的轧件侧面图像信号、金属检测器及旋转编码器信号进行数学建模,分别计算出轧件切除两端部时所对应的旋转编码器读数,并通过控制锥形辊道的速度将轧件自动运送至预先计算好的位置进行端部剪切。采用该自动控制方法,既可以提升剪切效率,避免二次剪切,又能精准控制剪切长度,提升成品率。Based on the flow rule of metal, when aluminum alloy ingots are rolled to the thickness of 100-150 mm, "mouth opening" will occur at both ends of the head and tail, which needs to be removed at the heavy shears. At present, heavy shearing operators rely on visual results to determine the length of shearing, so the shearing efficiency is low. When the shear length is not appropriate, it will cause a great waste. A mathematical model is established by using side image signal, metal detector and rotary encoder signal captured by an industrial CCD camera, and then the corresponding rotary encoder readings are calculated when the two ends of the rolled piece are cut off. Finally, the rolled piece is automatically transported to the pre-calculated position for end cutting by controlling the speed of the conical roller table. The automatic control method can not only improve the shearing efficiency, avoid secondary shearing, but also precisely control the shearing length and improve the yield.

关 键 词：铝合金铸锭 重型剪 自动剪切 剪切长度 剪切效率 

分 类 号：TG334.9[金属学及工艺—金属压力加工]