Experimental studies regarding wear processes through dry friction of the superficial layer for an unconventional treated steel

摘要

The aim of the studies on tribomodels regarding the dry friction wear and the processes of the wear in this case is to determine the wear intensity for a certain type of tribomodel and for a certain type of material. An Amsler stand was used. The experimental study uses two distinct values of task of loading (Q). The rolls with different diameters were used in order to obtain different sliding degrees (ζ). Studies have been made for the improvement of the mechanical properties of a Chromium - Molybdenum alloyed steel, unconventional treated in a magnetic field. The Thermo-magnetic treatment was applied before a thermo-chemical treatment. The mechanical properties of the material have been improved, particularly in the case of a great content of aluminum and chromium. The hardness values of the superficial layers which have been obtained after a complex thermo-magnetic and thermo - chemical treatments, the superficial layers content and the behavior of the steels at the wear tests were used as criterion. Diffractometric analysis and a statistical modeling completed this study.