铝合金三角板热锻模具设计及工艺分析

Die Design and Process Analysis for Hot Forging Aluminum Triangular Plate

对铝合金三角板进行热锻工艺性分析,设计了热锻工序件和模具,采用数值模拟分析模具和工艺设计的合理性.模拟结果表明：对于薄壁铝合金锻件而言,温度过低,会使成形载荷剧增且导致锻件表面开裂;温度过高,会导致锻件性能下降;合适的锻造温度为450~480℃.此外,当预锻和终锻飞边厚度分别设置为2 mm和1 mm时,能够兼顾成形载荷和切边变形等主要工艺的质量.

The hot forging process of aluminum triangular plate was analyzed,the hot forging pieces and die were designed,the design reasonability of the die and the process were analyzed via numerical simulation. The results show that lower temperature will lead to a rapidly rising of forming load and crack of forging surface for the thinwall aluminum forgings,while higher temperature will result in performance degradation,the suitable forging temperature is ranging between 450 ~ 480 ℃. Additionally,when the flash thickness of pre-forging and final forging are 2 mm and 1 mm respectively,qualities of all main processes,such as forming load and trimming deformation can be guranteed.