上限法在张力减径过程中的应用

Application of Upper Limit Method During Tensile Reducing Process

张减机是钢管生产中不可缺少的设备之一 .本文从一般能量原理出发 ,采用上限法推导出一个多变量公式 ,利用该公式可求解电机功率、张力系数、轧辊转速、出口钢管壁厚、孔型椭圆度等参数 。

Tensile reducer is one of the necessary apparatuses during the pipe production process at present.This paper deduces a multi-variation formula by using the energy principle and adopting upper limit method.The formula can be used to calculate the parameters such as the drive power,tensile coefficient,roll speed,depth of exit pipe wall,hole type ellipse etc..The existence of minus drive power has also been theoretically calculated.