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    • 3. 发明授权
    • Methods of and apparatus for pressure-ram-forming metal containers and the like
    • 压力冲击成形金属容器等的方法和装置
    • US06802196B2
    • 2004-10-12
    • US10284912
    • 2002-10-31
    • Kevin GongPeter HamstraStuart MacEwenRobert MalloryJames D. Moulton
    • Kevin GongPeter HamstraStuart MacEwenRobert MalloryJames D. Moulton
    • B21D2602
    • B21D26/049B21D22/16B21D26/033B21D26/041B21D26/047B21D51/16Y10T29/49805
    • A method of forming a bottle-shaped or other contoured metal container by subjecting a hollow metal preform having a closed end to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired shape, and advancing a punch by means of a backing ram into the die cavity to displace and deform the closed end of the preform either before or after expansion begins but before it is complete. The pressure-subjecting step is performed by simultaneously subjecting the preform in the die cavity to independently controllable internal and external positive fluid pressures and varying the difference between them to control strain rate. Apparatus for performing the method includes a split die with plural split inserts disposed in tandem to define the die cavity wall and heaters respectively inserted within the preform and arranged to heat the backing ram.
    • 通过对具有封闭端的中空金属预制件进行内部流体压力来形成瓶形或其它成形金属容器的方法,以使预成型件相对于限定所需形状的模腔的壁膨胀,并且将冲头推进 在模腔中的支撑柱塞的装置,用于在膨胀开始之前或之后但在其完成之前使预成型件的封闭端部移位和变形。 通过对模腔中的预成型体同时进行压力处理步骤,以独立地控制内部和外部正的流体压力,并且改变它们之间的差异以控制应变速率。 用于执行该方法的装置包括具有多个分离插入件的分开模具,所述多个分离插入件串联布置以限定模腔壁和分别插入在预成型件内并且布置成加热背衬柱塞的加热器。