Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
IMPROVEMENTS IN MASKLESS ELECTROCHEMICAL SURFACE TEXTURING FOR CYLINDRICAL COMPONENTS
Submission Author:
Henara Costa , RS , Brazil
Co-Authors:
Leonardo Conde Dias, Henara Costa, gabriel bacca ferri
Presenter: Leonardo Conde Dias
doi://10.26678/ABCM.COBEM2019.COB2019-2393
Abstract
The manufacture of surface microtextures composed of arrays of pockets is a proven way to improve lubrication in cylindrical sliding components. However, it remains a challenge to produce textured surfaces in large areas with low cost and texturing time, essential for industrial application and large-scale production of low-cost components. The maskless electrochemical surface texturing (MECT) technique draws attention as a very promising way of texturing low-cost components, such as sliding bearings and the liners of combustion engines. This work proposes a new configuration for the texturing chamber used in MECT. A new apparatus was developed where the electrolyte flows parallel to the textured region, in order to reduce the costs involved, improve the electrolyte flow and thus the efficiency of the process. Moreover, the use of an adhesive patterned mask was investigated as a way to create the insulation needed and avoid the tool perforation process. Voltages of 12V, with texturing times of 1.3 and 5 min and a distance of 400μm, allowed the manufacture of circular textures (650 to 1000μm in diameter and 5 to 25μm in depth) in low carbon steel cylindrical surfaces at extremely low cost.
Keywords
surface texturing, cylindrical components, MECT
