複雜斷面中空鋁擠型模具設計之研究

Study on Extrusion Die Design for Hollow Aluminum Part with Complicated Cross-section

許光城(Quang-Cherng Hsu) ； 黃榮茂(Rung-Mao Huang) ； 葉展宏(Jhan-Hong Ye)

《鍛造》 24卷1期 (2015/03) Pp. 20-24

摘要

本研究主要以DEFORM 3D探討Al6061複雜斷面中空管材之熱擠製加工成形性，以最終設計模具Type（3）模具搭配三種製程溫度來觀測其應力分佈情形，由模擬結果得知在製程溫度480℃底下模具承受較小的應力，使模具不易損壞。在模具設計中加大母模銲合室袋狀面積及縮小公模心軸的截面積，可有效使母模銲合室出口流速增加進而改善成形均勻度的問題。

關鍵字

鋁擠型 ； 成形均勻性 ； 有限元素分析

並列摘要

The main purpose of this study is to explore extrudability of Al6061 with hollow and complicated cross-section by using DEFORM 3D to simulate the extrusion process. In this simulation, we choose three different temperatures to observe stress distribution individually. The simulation result showed us that Type (3) had the best stress distribution at 480℃, it means that the die is more durable in the extrusion process. The uniform material flow was obtained by enlarging the pocket geometry in lower die and reducing the cross section area of mandrel in upper die.

並列關鍵字

Aluminum extrusion ； Forming uniformity ； Finite element analysis