航空铝合金构件预制坯工艺优化研究

Research on Preform Process of Aviation Aluminum Alloy Components

在刚—粘塑性有限元及模锻技术理论的基础上,采用Deform-3D软件对航空铝合金锻件成形过程进行数值模拟。分析了不同形状预制坯对充填行为、载荷、温度以及流线的影响。结果表明:7075铝合金在凸模速度为2mm/s,坯料初始温度为430℃,摩擦因子为0.3的条件下,采用某预制坯能够成形出高质量锻件。

On the basis of rigid-viscoplastic finite element and die forging theory, the forming process of aviation aluminum alloy forgings was numerically simulated with Deform-3D software. The influences of different shape perform on filling behavior, load and temperature variation and flow line were analyzed. The results show that： under the conditions of that punch speed is 2 mm/s, billets initial temperature is 430 ℃, friction factor is 0.3, the high quality 7075 aluminum alloy forging can be got by adopting a preform.