Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THE ROLE OF FRICTION COEFFICIENT OF GRAY CAST IRON MEASURED IN DRY AND LUBRICATED CONTACTS
Submission Author:
Erika Damas , MG
Co-Authors:
Erika Damas, Túlio Miorini Vieira Alves Rodrigues, Washington Martins da Silva Jr., Henara Costa
Presenter: Erika Damas
doi://10.26678/ABCM.COBEM2019.COB2019-1390
Abstract
Surface texturization is the formation of micro-cavities on the surfaces according certain shapes and patterns. In lubricate systems, those micro-cavities promote hydrodynamic effects that potentially reduce friction and wear. For example, different texturing techniques are applied in cylinders of internal combustion engines and in sliding bearings. In the present study the maskless elctrochemical texturing (MECT) method is applied in order to obtain patterns of texture in chevron shape on gray cast iron shape. A microtribometer was used to evaluate the reciprocating wear test. This equipment was specially developed to perform a high sensitive reciprocating sliding wear test. The counter body was a 5 mm sphere of AISI 52100 steel. The input parameters for experiment was frequency, normal load and test time. The efficiency of the presence of texture, tests will be conducted in specimen with and without texture and with and without lubrication.
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