基于HyperXtrude的铝合金壁板连续挤压技术

Continuous extrusion technology of aluminum alloy panels based on HyperXtrude

采用HyperXtrude模拟软件对6063铝合金壁板进行连续挤压数值模拟,得到了挤压成形时金属的速度分布场。结果表明,金属在扩展模中的流动速度是不均匀的,速度最高的部位出现在与腔体进料口相对应的中间位置,速度由中间向两侧逐渐降低;改变导流模的结构可以有效的均衡金属流速,当导流模中的阻流块高度由8 mm降低至2 mm时,可使壁板产品截面的最大速度差由34.2 mm·s^(-1)降低至16.4 mm·s^(-1)。对铝合金壁板进行连续挤压工艺实验,得到合格的产品,验证了利用连续挤压扩展成形技术生产铝合金壁板的可行性。

The forming process of 6063 aluminum alloy panels produced by continuous extrusion was simulated by Hyper Xtrude. The velocity distribution of metal in the extrusion process was obtained. The results show that the metal flow velocity in the expansion die is not uniform,and the highest velocity appears in the middle of the cavity corresponding to the feed inlet of the cavity. The velocity decreases gradually from the middle area to the both sides. The metal velocity can be effectively balanced by optimizing the structure of the diversion die. When the height of the baffle-block of diversion die decreases from 8mm to 2 mm,the maximum velocity difference decreases from34. 2 mm·s（-1）to 16. 4 mm·s（-1）. Finally the qualified product was extruded by the continuous extrusion experiment. The feasibility of aluminium alloy panels produced by continuous extrusion expansion deforming was verified.