Granulation of Extruded Plastic Wires: Influence of Tool Coating Properties and Tool Geometry on Cutting Forces and Tool Wear


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Granulators are widely used to reduce reinforced and unreinforced plastic strands in small pieces. The tools implemented in this machining process are mainly made of high-speed steel. This work investigates diverse PVD hard thin coatings with the aim of improving tool life and efficiency in granulation technology. A test facility reproducing the main features of a real granulator has been designed and assembled. The machined strand materials are ABS plastic and fibreglass-reinforced polyamide 6, while the tested PVD films are CrN, TiCN, TiAlN and two different diamond-like carbon coatings. The wear evaluation of all coated tools has been done via structured light projection, together with a scanning electron microscopy-based analysis, before and after their implementation on the test facility. Furthermore, a suitable 2D finite element modelling of the machining process has been realized.



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Edited by:

Jens P. Wulfsberg, Marc Fette, Tobias Montag




M. Cardone et al., "Granulation of Extruded Plastic Wires: Influence of Tool Coating Properties and Tool Geometry on Cutting Forces and Tool Wear", Advanced Materials Research, Vol. 1140, pp. 181-188, 2016

Online since:

August 2016




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