基于成型7系硬铝合金的模具结构研究

Research on die structure hard aluminum alloy based on 7 series

结合7系硬铝合金硬化机理,分析了其挤压过程中易出现的缩孔和表面划伤等缺陷以及堵模和模具报废等问题,针对这些问题,从模具结构设计的角度研究了型材缺陷和挤压过程中模具问题的形成原因,提出了相应模具结构的改进方法,解决了7系硬铝合金挤压过程中出现的型材缺陷问题。

Combined with the hardening mechanism of 7 hard aluminum alloy,the defects such as shrinkage cavity,surface scratch,die blocking and die scraping that easy to appear in the extrusion process were analyzed.In view of these problems,the forming reasons of profile defects and die problems in the extrusion process were studied from the perspective of die structure design,and the corresponding improvement methods of die structure were put forward to solve the profile de⁃fects in the extrusion process of 7 duralumin alloy.