摘要
热连轧粗轧区采用可逆轧制时,由于板带头尾部低速咬钢(抛钢),轧辊冷却水对头尾温度的影响增大,加上头尾在空气中冷却速度大于本体部分,因此头尾温度偏低,同时头尾部处于无张或失张状态,传统AGC不能有效控制端部厚度。针对头尾厚跃现象,提出一种新的“压头”与“压尾”的控制方法,该方法采用最后两机架压头和两次压尾的方式进行控制,可弥补传统AGC端部控制效果差的缺点,使头尾厚度质量大幅提高。并成功应用于实际项目,取得了良好的控制效果,值得国内热轧厂推广应用。
When roughing mill area of hot strip production line adopts reversing rolled strips enter and exit stands at a higher speed, therefore cooling water influences strips' heads and tails more greatly than main parts. In addition, considering cooling rates in air, strips have lower temperature on their ends. Meanwhile, the ends are in a state of no tension or less tension. So conventional AGC can not control them efficiently. Aim at reducing thickness jump in head and tail of hot strips, this paper put forward a new control method of “Tapering Head” and “Tapering Tail”.The method adopts the control mode of tapering head on last two stands and tapering tail twice to avoid the shortcomings of traditional AGC, improve head and tail quality greatly,and reduce unexamined length. The method has been used in practice with good effect. And it is worthy of application in domestic hot rolling plants.
出处
《钢铁》
CAS
CSCD
北大核心
2005年第4期46-48,86,共4页
Iron and Steel
关键词
热轧
AGC
压头与压尾
hot rolling
AGC
tapering head/tail
