电力水压成形机 electroshape
动水压成形 rodynamic compressive forming
水压式成形器 hydro-former
直接水压式成形法 [机] kranenburg method
水压成形
hydroforming
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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。
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.
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