Patent ID: 6905644

Claim:
Process for producing components and semi-finished products from synthetic graphite or from ceramic granules, in particular for producing graphite tubes ( 52 ), involving shaping of a material to be mixed ( 20 ) preferably containing petroleum coke or graphite granules, by means of an extrusion press ( 22 ) or an extruder ( 56 ; 74 ), characterized by the following steps; a) Pre-pressing the material to be mixed ( 20 ) in static or quasi-static manner, flow movements of the material to be mixed ( 20 ) 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 to be mixed ( 20 ) through an outlet opening ( 28 ; 61 ; 82 ) of the extrusion press ( 22 ) or the extruder ( 56 ; 74 ) 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 (β) of a maximum of 75° in the direction of pressing.