本文给出了钩子锁模闭式挤压新型模具结构。
A new type of structure of closed extrusion dies with locking hooks is put out.
给出了直接式挤压铸造模具和双分型面挤压铸造模具设计技术要点；
The key design points of die for direct squeezing casting and the die with two-parting surface were introduced.
介绍了挤压型材模具中，具有阶梯式凸模的分流组合模设计的方法和设计要点，用实例阐述了该类型模具的设计过程和设计思路。
Introduced design method and points of separation combined extruding die with ladder-shape punch in extruding die, stated extruding die design process and thought using practical example.
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