Authors: Ricardo Paulo, Teresa Morgado

This paper was based on a real case of a screw used to move the waste, which presented integrity problems. A screw from the solid waste treatment industry which had the function of moving the organic waste, therefore subjected to a corrosive environment, was studied. The interaction of the mechanical component with the waste tends to speed up the wear process, resulting in a low equipment life/durability. This study compares the wear behaviour of three rolled steels for the production of a screw. AISI 1024, AISI P20 and AISI 304 steels were tested on a pin-on-disk apparatus, under the influence of three different wastes which acted as corrosive environments during the pin-on-disk wear test. Two wastes were organic with different compositions, and another one organic with addition of glass particles.

Ricardo Paulo¹ | Teresa Morgado^1,2,3
1DEMI – Mechanical and Industrial Engineering Department, FCT NOVA – Faculty of Science and Technology,
Universidade Nova de Lisboa, Lisboa, Portugal
2UNIDEMI – Research and Development Unit for Mechanical and Industrial Engineering, FCT NOVA – Faculty
of Science and Technology, Universidade Nova de Lisboa, Lisboa, Portugal
3IPT- Polytechnic Institute of Tomar, Portugal