A porthole die for forming the aluminum alloy hollow section used in doors and windows was developed.Each structural element of the die and the design requirements was analyzed systematically.

• 针对建筑门窗铝合金空心型材进行了平面分流模设计,分析了平面分流模的各结构要素及设计要求,并结合实际生产给出了空心挤压型材模具的详细设计方法、设计要点、设计流程。