This invention relates to a process and a device for producing components and
semi-finished products from synthetic graphite or from ceramic granules, in particular
for producing graphite tubes, involving shaping of a material to be mixed preferably
containing petroleum coke or graphite granules, by means of an extrusion press
(22) or an extruder, wherein the process provides the following steps:
a) Pre-pressing the material (20) to be mixed in static or quasi-static
manner, flow movements of the material (20) to be mixed being stopped or
impeded in such a way that particles previously irregularly arranged in the material
to be mixed are initially aligned transversely to the direction of pressing,
b) Pressing out of the pre-pressed material (20) to be mixed through
an outlet opening (28) of the extrusion press (22) or the extruder
in such a way that owing to adjusted flow properties of the material (20)
to be mixed, the particles within the pre-compressed material (20) to be
mixed realign, starting from their transverse alignment, by an angle ()
of a maximum of 75 in the direction of pressing.
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