5083铝合金法兰盘锻造过程的数值模拟  

Numerical Simulation of Forging Process for 5083 Aluminum Alloy Flange

作　　者：林高用[1] 冯迪[1] 孙利平[1] 周佳[1] 张振峰[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《热加工工艺》2008年第13期54-58,共5页Hot Working Technology

基　　金：中南大学大学生创新性实验计划项目资助(LC07117)

摘　　要：采用有限体积法对5083铝合金法兰盘锻造成形过程进行了数值模拟,分析比较了在坯料形状不同的情况下,法兰盘在锻造过程中的速度场、流动状态和等效应力应变场。模拟分析结果表明,通过增加坯料管壁外锥度和增大圆角半径,可以有效避免锻造过程中锻件开裂和折叠缺陷的出现;并根据分析结果对锻模进行了改进,在内壁增设飞边槽以利于锻造成形。Using FVM, the forging process of a kind of 5083 aluminum alloy flange was simulated numerically. The distributions of velocity field, the material flowing state and effective stress and strain filed of different shape of forging billets were analyzed. The simulation results show that by adding a conic angle at the outer wall and enlarging the radius of fillet angle of the billet, the defects of collapse and cracks can be efficiently avoided. An improving project for the die design is proposed, that is adding a flash gutter at the inner wall of the piece to facilitate the forging deformation.

关 键 词：5083铝合金 法兰盘 模锻 有限体积法 

分 类 号：TG314.4[金属学及工艺—金属压力加工]