Development and application of multi-ram forging technology
REN Yun-lai
NIE Shao-min
MIAO Li-ya
Abstract：The multi-ram forging is a die forging method that can apply loads from two or more directions to forming the billet in the separable die cavity.It can produce a hollow forgings with outside bosses or complex forgings with shoot protruding to different directions.The final shapes and dimensions of the forgings are close to the parts.Therefore higher material utilization rate is achieved,less machining needed.Further,complete in-ternal flow line of the forgings brings good stress erosion resistance and fatigue strength.All these advantages enable forgings produced using multi-ram forging method to better meet the forgings' requirements in different fields such as machinery,electric equipment,petrochemical equipment,aerospace equipment,ship and car manufacturing,national defense.Multi-ram forging has become a promising and widely-used branch in forging technology.Since the beginning of 1950s,the US company Cameron started to use multi-ram forging,multi-ram forging press and process have gained continuous development.To satisfy ever-increasing technical require-ments,five aspects such multi-ram forging presses and technology that can pierce holes in different and change-able directions should be further studied and improved.
Keywords：multiple-ram die forgingdie forgingforgedie forging hydraulic machinehydraulic machine
Publication Date：2014-07-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1-8 )