芯辊直径对AZ31镁合金热轧环件的影响  

Effect of Idle Roll Diameter on Hot Radial-Axial Ring of AZ31 Magnesium Alloy

作　　者：罗晓东[1] 柳浩[1] 戴庆伟[1] 许文林[1] 郑先兴[1] 

机构地区：[1]重庆科技学院冶金与材料工程学院

出　　处：《特种铸造及有色合金》2015年第9期920-922,共3页Special Casting & Nonferrous Alloys

摘　　要：基于ABAQUS/Explicit平台建立了AZ31镁合金环件径轴向热轧的三维弹塑性热力耦合有限元模型,分析了芯辊直径对成形环件的应变和温度分布不均匀性以及轧制性能的影响。结果表明,随着芯辊直径的增加,成形环件的等效应变和温度分布越来越均匀;同时轧制力和径向轧制力矩逐渐增大,轴向轧制力矩逐渐减小。Based on the ABAQUS/Explicit software, a 3D elastic-plastic coupled thermo-mechanical FE （finite element） model of hot radial-axial rolling of AZ31 magnesium alloy was established to analyze influence of idle roll diameter on the non-uniform distribution of strain and temperature, rolling force and power parameters. The results show that with idle roll diameter increase, the strain distribution and the temperature distribution of the rolled ring become more homogeneous, meanwhile, the rolling force and rolling moment of radial direction are gradually increased with the increase at idle roll diameter, however, rolling moment at axial direction is decreased gradually.

关 键 词：芯辊直径 AZ31镁合金 有限元法 径轴向轧制 

分 类 号：TG339[金属学及工艺—金属压力加工] TG146.22[一般工业技术—材料科学与工程]