【摘要】 为了探讨挤压工艺参数对AZ31槽型镁合金挤压过程的影响规律,本文采用正交试验的优化方法并结合DEFORM有限元数值模拟,分析了挤压初始温度、挤压速度、挤压比、模角和工作带长度对挤压力、应力及出口温度影响的显著性次序及其影响规律,并获得了优化的工艺参数。试验结果表明,挤压温度是影响挤压力、应力和出口温度最重要的一个因素,挤压速度对三者的影响次之,而工作带长度对3个目标函数的影响都不显著。更多还原

【Abstract】 In order to explore the extrusion process effect law on the AZ31 magnesium alloy channel, it has been analyzed that the influence significance order and laws of extrusion temperature, ram speed, extrusion ratio, die angle and die bearing length on the extrusion pressure, stress and the outlet temperature, based on orthogonal design of optimization methods in combination with DEFORM finite element numerical simulation. The optimized process parameters were obtained. The results show that the extrusion temperature is the most significant influence on the extrusion pressure, stress and the outlet temperature, and the extrusion speed play the second impact of the three objectives, and the die bearing length is not significantly affected.更多还原