The apparatus for extrusion of material includes a process chamber provided
in front of a die thereby serving to control parameters of the extrusion
method. A die hold is provided to serve both as a structure for mounting a
die in the front end of a hollow stem and a process chamber in front of a
die. Preferably the process chamber is provided with structure for
establishing resistance to the material to control the flow of material
through the chamber. The control structure is adapted to serve both as a
temperature regulating device for achieving an optimum temperature of the
metal inside the process chamber and as a position controlling device for
controlling the position of the metal inside the process chamber during
the loading of a new billet.
