Study on the extrusion process of high-strength 2A12 aluminum alloy variable section
Extrusion is an important forming process of variable section structure,and the extrusion process of 2A12 aluminum alloy variable section pipe was numerically simulated by finite element software.The variation characteristics of temperature field and strain field in the extrusion process of variable section pipe were studied.The influence of billet temperature,extrusion speed,die bearing length and cone angle of extrusion die on the temperature field and strain field at the mold mouth.The results show that with the increase of extrusion die cone angle,extrusion speed,and the decrease of billet temperature,the uniformity of temperature and strain fields at the outlet decreases.The change in the length of the die bearing has little effect on the outlet tempera-ture field and strain field.
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