冷轧酸洗生产线中的专用闪光对焊机  

Special flash butt welding machine in cold rolling and pickling line

作　　者：王睿[1] 孙鹤旭[1] 王立伟[1] 高忠林[2] 

机构地区：[1]河北工业大学控制科学与工程学院,天津300130 [2]天津七所高科技有限公司,天津300409

出　　处：《焊接学报》2011年第1期77-80,117,共4页Transactions of The China Welding Institution

基　　金：河北省科技攻关项目资助(07212114D)

摘　　要：针对冷轧酸洗生产线的特点,设计了冷轧酸洗生产线中专用闪光焊机的总体结构.分析了冷轧酸洗生产线专用闪光焊机电源系统,建立了其电源系统数学模型,其主电路采用的是单相交流调压结构;闪光阶段分为闪光前阶段和闪光后阶段,整个闪光阶段晶闸管是全导通的,只是通过改变变压器的抽头控制输出电压,顶锻阶段是通过改变晶闸管的控制角控制输出电压.闪光焊机的顶锻液压伺服系统是通过顶锻液压缸实际位置与闪光烧化曲线相比较,完成送进速度的控制.结果表明,应用了该电源结构和液压伺服控制的闪光焊机很好地满足了薄板对焊的技术需求.According to characteristic of cold rolling and pickling line,this article presents total configuration and control system of special flash butt welding machine in cold rolling and pickling line.The power system of special flash butt welding is analyzed,the mathematics model is built,its main circuit adopts single phase AC voltage controller.The flash process includes the former and the later.In the flash stage,output voltage is controlled by transformer tap and thyristor control angle is π.In the upset stage,output voltage is controlled by thyristor control angle.Running-in speed of upset hydraulic system is controlled by error bet ween upset hydraulic cylinder actual value and the flash curve.Experiments showed that the flash welding machine met the requirements of strip billets welding.

关 键 词：冷轧酸洗生产线 闪光焊 电源系统 液压系统 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]