Abstract:
Numerical
simulation with rigid plastic finite element method and
experimental investigation with visioplasticity method and Morie
technique were used to study the effect of die profiles on the
flow during metal extrusion. Velocity, strain rate, stress and
temperature field in the workpieces extruded with conical die,
cosine curved die, constant strain rate curved die, hyperbolic
curved die, elliptical curved die and Richmond curved die as
well as newly designed sine curved die were calculated. Boundary
conditions of F. E. M. were checked with Morie pattern. Results
show that among the seven kinds of dies, the best one is the
newly designed sine curved die and the next is the cosine curved
die. These dies carry out lower extrusion load and more
homogeneous strain distributions.
Key words:
Extrusion Die profile Numerical
simulation
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