A typical die set for closed-dieforging has been designed, of which the core rigid close-die mechanism has a good property.
设计了伞齿轮完全闭塞式锻造的模架，核心部位刚性锁模机构具有良好的闭模特性。
2
The billet was at first pre formed and close-die forged on different hydraulic presses and then the forging was rolled, punched and bended. Such a production line will be the most efficient.