由于使用液压压下(或压上)的轧机具有反应速度快,辊缝控制精度高,轧机刚度系数可以控制等优点,所以它比电动压下系统更能迅速和精确地调整辊缝,甚至能消除由于轧辊偏心所造成的厚度偏差,这样就能获得高精度的板材和带材,因而有很大的经济意义,特别由于现在轧制速度愈来愈高,对成品公差要求愈来愈严,所以液压压下装置得到非常迅速的发展。 Thanks to the advantages of fast reaction speed, high precision control of the roll gap and control of the mill stiffness factor, the use of hydraulic presses (or presses) makes it possible to adjust the roll gap more quickly and precisely than the electric reduction system, The elimination of the thickness deviations caused by the eccentricity of the rolls makes it possible to obtain high-precision sheets and strips, which is of great economic importance, in particular due to the fact that the rolling speed is getting higher and higher, So the hydraulic pressure device has been very rapid development.