Artykuł

Vol: 35 , Nr: , Art.: 2
Tytuł / Title:
Influence of machining of EN-GJL-250 and EN-GJS-400 cast irons on tribological behavior
Autorzy / Authors:
MARTINEZ
PEREIRA Alejandro
PEREZ
MATHIA Thomas
GEF - Engineering and Manufacturing Group Faculty of Industrial Engineering - University of Vigo
Słowa kluczowe / key words:
Tribological behavior, grey cast iron, spheroidal graphite cast iron, friction, surface wear
Streszczenie / Summary:

In transport and, particularly in the case of the present study, naval industries, one of the major objectives of research on wear and friction is focused principally on solid lubrication. In the following paper, the tribological behaviors of two well-known, different cast irons, lamellar grey iron (EN-GJL-250) and spheroidal graphite ductile iron (EN-GJS-400), are compared and the results are analyzed. For each material's family, the surfaces’ properties are characterized at  different stages of the machining process. The particular influence of diverse feed rates in a turning facing is evaluated. Moreover, some tests of the laser cladding process, which  contribute to the improvement of superficial properties, are carried out; therefore, the initial morphology before surface treatment is carefully characterized and evaluated in the context of subsequent adhesion qualification.

The final goal of the study is to deliver feasible initial information concerning two similar cast irons that are traditionally used in the naval industry, which would be manufactured and employed in the future as dry lubricated bearings