叙述了闭式模锻工艺的实质、特点、方式及模具型式，列举了典型的闭式模具结构图。
The article has described substance, characteristic, methods and die types of flasless die forging technology, and it has list the typical die construction figures of flasless die forging.
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.
针对螺旋伞齿轮开式模锻存在的问题，提出了螺旋伞齿轮闭式精锻新工艺及其模具结构。
The problems of open-die forging for spiral bevel gears are described. A new process and new structure principle of die for closed precision die forging of spiral bevel gears are presented.
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