微张力减径过程热力耦合有限元模拟  

Thermal-mechanical Coupling Simulation on Mini-stretch Reducing Rolling Process by FEM

作　　者：于辉[1] 杜凤山[1] 臧新良[1] 汪飞雪[1] 徐海亮[1] 

机构地区：[1]燕山大学,秦皇岛066004

出　　处：《中国机械工程》2008年第14期1744-1747,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助重点项目(50435010)

摘　　要：根据某厂十机架微张力减径机组轧制工艺,采用大变形弹塑性有限元法建立了管坯连轧三维热力耦合计算模型,并对实际工艺过程进行数值计算,得到了连轧过程中轧件的温度场、应变场和应力场分布规律。基于计算结果,分析了管坯壁厚分布规律、机架力能参数分布。所得结果与现场设定、实测结果吻合良好,表明了该计算模型的有效性。该模型可为现场张力减径工艺过程离线分析提供有力帮助。Based on rolling technology of mini- stretch reducing mill group, a 3D thermal- mechanical coupled analytic model for tube tandem rolling process had been established by using large deformed elastic--plastic finite element method. The distributional regularities of temperature field, stress field and strain filed were obtained by numerical simulation and actual technical process. The tube wall thickness distribution and the energy parameters were analyzed on the basis of simulation results. Simulated energy parameters are a good agreement with the measured results. The effectivity of model is verified. This model provides a powerful off--line method for analyzing industrial technology of stretch reducing rolling process.

关 键 词：张力减径 热力耦合 有限元 温度场 

分 类 号：TG335.7[金属学及工艺—金属压力加工]