Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Determination of Processing Parameters Window for Laser Cladding of Iron and Tin Alloy
Submission Author:
Gustavo Henrique Truppel , SC , Brazil
Co-Authors:
Gustavo Henrique Truppel, Milton Pereira, Paulo Wendhausen
Presenter: Gustavo Henrique Truppel
doi://10.26678/ABCM.COBEM2019.COB2019-0147
Abstract
Hydrodynamic bearings of rotating machines can develop wear behaviors that cause failures and reduction in productivity. For this, tin-based metal alloys are used as bearings coatings since they can improve tribological properties. This work studies the laser power and traverse speed influence on geometric dilution results of Fe and Sn-based deposits processed by laser cladding. Experimental methodology presented single-tracks bead-on-plate depositions with different combinations of laser power and traverse speed, which varied four levels each. The experiments results were accessed through tracks’ cross sections analyses made by Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS). It was concluded that a geometric dilution behavior was only achieved by the highest power level, independently of the traverse speed. With this, the lowest geometric dilution achieved (14.41%) was presented by a combination of 1400 W with 5 x 10-3 m/s. EDS element mapping presented a homogenous microstructure composed by Fe and Sn-rich phases. Therefore, it can be concluded that future optimization work aiming an even lower dilution level must explore a process parameter window around 1400 W and 5 x 10-3 m/s.
Keywords
Tin-alloy, Dilution, Microstructure, Process window, LASER Cladding
