Civil Engineering Reference
In-Depth Information
FIGURE 4.1
Simplified process model of injection forging.
FIGURE 4.2
Injection Forging configurations classified with reference to work-material forms.
Injection Forging of Solid Billet
Solid billets may be injection-forged to produce flanges, branches, or other geometric elements (
Fig. 4.2a
)
[8-13]. The configuration with an active counter-pressure on the issuing flange, which can be achieved
either by fluids or by matrix materials [3], may be used to prevent the initiation of fracture of the flange.
The components can also be injection-forged by multi-axial extrusion [13] in which the billet contained
in a closed die is extruded in several directions to produce a solid or hollow branched part in a single
operation. Injection forging can also be combined with other forming processes; successful examples
