异形薄壁罐气压胀形工艺参数优化(英文)

Process Parameter Optimization on Pneumatic Bulging for Abnormity Thin-wall Pot

为提高异形金属薄壁罐气压胀形的成形质量,减少壁厚减薄严重及皱折破裂等成形缺陷,采用数值模拟的方法,分析了摩擦因数、模具圆角半径、坯料厚度、胀形压力对壁厚减薄率、最大应力值、轴向收缩的影响规律,试验验证与数值模拟结果吻合。研究结果对工艺优化和过程控制具有较大的实用意义。

To enhance the forming quality of pneumatic bulging for abnormity thin-wal pot and re-duce such forming defects as severe wal thickness reduction and fold breaks.Based on numeri-cal simulation,this article analyzes the impact of the friction factor,die radius of curvature,pot wal thickness and load pressure on the wal thickness reduction rate,maximum stress and axial contraction.The experiment result is consistent with that of the numerical simulation.The re-search results have greater practical value to process optimization and process control.