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等温挤压工艺对于推动6A02铝合金在汽车发动机领域的普及有着重要作用。因此,基于DEFORM-2D有限元平台,建立了6A02铝合金管材(?480 mm×4 mm×1800 mm)等温挤压工艺预测模型,并按正交理论设计了模拟方案。研究揭示了模角、定径带长度、坯料初始温度、挤压速度、摩擦系数等重要成形参数对模口管材温度波动幅值的影响显著性顺序以及影响规律。结果对制定6A02铝合金管材等温挤压工艺过程具有重要理论指导意义。
Isothermal extrusion process for the promotion of 6A02 aluminum alloy in the field of automotive engines has an important role in the popularity. Therefore, based on the DEFORM-2D finite element platform, the isothermal extrusion process prediction model of 6A02 aluminum alloy pipe (? 480 mm × 4 mm × 1800 mm) is established and the simulation scheme is designed according to the orthogonal theory. The significant order and influencing rule of the influence of the forming parameters such as die angle, length of sizing tape, initial temperature of blank, extrusion speed and friction coefficient on the amplitude of temperature fluctuation of die tube were revealed. The results of the development of 6A02 aluminum pipe isothermal extrusion process has important theoretical significance.