基于Deform-3D的异型铝型材挤压模具开裂失效分析与参数优化  

Cracking failure analysis and parameter optimization of special-shaped aluminum profile extrusion die base on Deform-3D

作　　者：徐永礼[1] 庞祖高[2] 唐夏翔[2] 

机构地区：[1]广西水利电力职业技术学院,机电工程系,广西南宁530023 [2]广西大学材料科学与工程学院,广西南宁530004

出　　处：《锻压技术》2014年第4期97-103,共7页Forging & Stamping Technology

基　　金：广西自然科学基金资助项目(2013GXNSFAA019303)

摘　　要：对某异型铝型材H13钢挤压模具分流桥早期开裂失效的状况,采用Deform-3D软件分析并进行正交优化试验设计。结果表明,当挤压温度为460℃、挤压速度为30 mm·s-1、摩擦因子为0.6和模具预热温度为450℃时,坯料塑性最差、变形抗力及流动阻力最大,模具主应力超过材料许用应力值导致模具开裂失效。优化挤压温度为500℃、挤压速度为10 mm·s-1、摩擦因子为0.4和模具预热温度为470℃时,模具的最大主应力仅为529 MPa,能够最大可能地避免模具早期的开裂失效。The initial cracking failure in porthole bridge of a kind of special-shaped aluminum profile extrusion die was analyzed by Deform - 3D software and orthogonal test. The results show that the ductility of materials is the worst, and deformation resistance and flow resistance are the biggest when the extrusion temperature, extrusion speed, friction factor, preheating temperature of die are 460 ℃, 30 mm ~ s-~ , 0. 6 and 450 ℃, respectively. The die will crack when the principal stress is above permissible stress. The initial cracking failure of die will be avoided most possibly when the extrusion temperature, extrusion speed, friction factor and preheating temperature are 500 ℃ , 10 mm ·s-1, 0.4 and 470 ℃, respectively.

关 键 词：挤压模具 开裂失效 主应力 参数优化 DEFORM-3D 

分 类 号：TG375.41[金属学及工艺—金属压力加工]