Criterion Determination of Completely Worn Out Elements of Tribomechanical System on Extruders

Abstract

The effect of wear between screw and barrel, as a tribomechanical parameter, on extrusion of thermoplastics materials has been presented in this work. Growth of a radial clearance between screw and barrel as a consequence of surface wear, could be controlled during extruder operation which can be valuable for cable production since both, the extruder output rate and extrudate quality, are in direct proportion with the value of the radial clearance. Criterion determination of completely worn out extruder elements in a cable industry, (screw and barrel), enables on time preventive intervention in the sense of reparation and production new elements (screw and barrel) which would greatly reduce the cost of production.