【摘要】 唐钢一轧厂在提速改造工程中启用从瑞典引进的飞剪机,实现定尺剪切,为满足生产工艺要求对其控制系统进行了改造。为提高飞剪的剪切精度,针对影响飞剪剪切精度的因素,采用双热金属探测器测定轧件速度,动态控制飞剪的启动时机,实现对轧件剪切长度的控制,并经过多次试验,采用半差调节法对剪刃停止位置偏差进行闭环调整,使轧件的剪切精度控制在±6cm的范围内,提高了产品产量和成材率。更多还原

【Abstract】 Flying shear imported from Sweden is used to realize bar cutting for the rolling speed increased reformation in Tangshan Iron and Steel Group Co Ltd.Its control system is changed to meet the production demand.In order to improve the cutting accuracy,two hot metal detectors are used to detect the bar speed aiming at the influence factors of cutting accuracy.The cutting start time and cutting length are dynamically controlled.After several experiments,a method called half tolerance modulation is adopted to closely regulate the stop position tolerance of share blade. Eventually the tolerance is within 6 cm.The product output and economic benefits are improved. 更多还原