用变化的速度挤压规则截面铝型材的FVM研究

FVM Study on Regular Section Profile Extrusion with Changing Speed

以规则截面的AA6061铝材挤压件为例,分别采取均匀速度和呈线性由高到低变化的速度,对挤压过程进行有限体积法数值模拟研究,得到挤压过程中挤压件及模具的温度、应力分布及其模具载荷等并进行分析。研究结果表明,选择呈线性由高到低变化的速度进行挤压,能够保持挤压件及模具适宜的温度范围,提高挤压件质量,降低模具载荷,提高生产效率。研究结果可以为铝型材挤压的生产实践中工艺参数的确定提供理论参考。

With constant speeds and high to low linearly changing speeds, respectively, the extrusion processes of AA6061 extrusion profile with regular section were simulated by finite volume method. The status of temperature, stress of extrudate and die, and die loads were obtained and analyzed, The research results show that with linearly changing velocity profile appropriate temperature range of the extrudate and dies can be sustained, extrudate quality can be improved, die load can be reduced and productivity can be improved. The study results can give theoretical reference for the determination of processing parameters in aluminum extrusion practices.