...少量生产，此种方式下的胚料变形基本上不受模 具限制；其他锻造方法的胚料变形都受模具限制，也称为闭模锻造 (close-die forging)，适用于大量生产。
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A typical die set for closed-die forging 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。
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.
钢坯先在一台水压机上预成形制坯，再在另一台压机上模锻，经轧制扩径后冲孔压弯。
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