| 英文摘要 |
Nowadays the aluminum alloys have been used worldwide in different industries, such as the building industry, automotive industry and aerospace industry. The demand of different cross-sectional aluminum profiles is still continuously increased to support the growth of different industrial sections. To produce these aluminum profiles, the design of the forming die plays a significant role to improve the part accuracy and production capability. Currently, there are many companies tried to improve performance of process and extend the die life by conducting different sets of experiments. This method is timeconsuming and so costly. Finite Element Modeling (FEM) just recently is used to design the product of the part. However, there are a few studies on the process parameters affected the die life. Therefore, this project focuses on the effect of the factors that could be caused of shorten die life, such as flow behavior, extrusion load, flow velocity, and temperature distribution. FEM was employed to simulate and investigate the effect of those factors on die stress. DEFORM 3D was used to simulate this hot extrusion process of aluminum square hollow profile size 1.7x1.7 inch. The simulation result of die stress was predictable and coherent with failure in real die that used to produce aluminum profile. Furthermore, this result was able to indicate, where is the weakest areas, which should be modified or adjusted die geometry to reduce die stress and improve die life. |
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