Spread Model for TC4 Alloy Rod during the Three-Roll Tandem Rolling Process

摘要:

为了保证三辊连轧过程中棒材的成型精度，研究了TC4钛合金棒材的宽展。采用正交试验优化设计方法设计数值模拟方案，在Marc有限元平台上，研究轧制工艺参数（轧制温度、轧制速度、孔型内切圆直径、轧辊直径、摩擦系数）对宽展的影响，并分析了各参数的影响显著性顺序。在此基础上，建立了三辊轧制TC4棒材的宽展模型。试验在自行研制的8机架Y型连轧机上进行，孔型系统为平三角-圆。宽展测量结果和模型计算结果吻合较好

Abstract:

In order to get high-precision TC4 alloy rod during the three-roll tandem rolling process, the spread of rod has been studied. A numerical simulation project was designed by an orthogonal experiment optimization design method. On the FEM software platform of Marc, the influence of rolling process parameters, including the rolling temperature, the rolling velocity, the inscribed circle of pass, the diameter of roller, and the friction coefficient between roller and rod, on the spread was investigated. Moreover, the effect order of above parameters was analyzed. On this basis, the spread model for TC4 alloy rod during three-roll rolling was established. The experiment was done on the self-developed three-roll mill of eight passes with a flat triangle-round sequence. The calculated results of spread model are in good agreement with the on-site data