Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Parameterization of laser cladding process with WC and H13 in considering dilution aspects
Submission Author:
Paulo Dyer , SP , Brazil
Co-Authors:
Paulo Dyer, Silvelene Silva, Andersan dos Santos Paula, Rafael Ramos, Maria Margareth da Silva, Getúlio Vasconcelos
Presenter: Paulo Dyer
doi://10.26678/ABCM.COBEM2023.COB2023-2131
Abstract
Laser clad automated processing becomes more and more widespread in manufacturing industry. Meeting an increasingly demanding for cost reduction to purchasing and line or contract activities stoppage for parts replacement; as well, the reduction of worn parts disposal. With applications on broad spectrum of chains, such as consumer goods, heavy industries, energy, services, agriculture and aerospace. Using resistant and accessible materials like structural steel as a parts and powders of steel tool (H13) and tungsten carbide (WC) as a coating to brings wear improvements. However, according to literature, these processes aren't systematized, considering execution parameters by robotic arm and laser beam coupled to this equipment; including variables of beam diameter (bd), laser power (P); and its respective efficiency (E); scanning speed (vs) and clad powder feeding (µ). In the context of clad run optimization, observing the clad morphology by the parameters of dilution (D) and clad angle (α). Furthermore, there's a lack of researches approaching these parameters through computational models; since these robotic arms have an extensive tutorial in this environment; aiming to create mirror models with reproduce these processes at virtual environment; in order to facilitate the replication of such parameters in other projects. In this way, this paper aimed a production of process chart, determining laser cladding parameters for a better efficiency; using H13 and WC powders cladding on structural steel substrates based on optimal boundary conditions of D and α. For this, a 1500W CO2 laser was used; with bd = 6 mm, coupled to a Yaskawa Motoman robot arm. The process chart shown a D = 30 % with α = 148° optimum, from the parameters of vs = 4 mm/s, 70% of P efficiency and µ = 6 g/min. Improving mechanical properties, than starting materials, of micro hardness (MHV) and wear resistance. Concurrently, the algorithm implemented on the robotic arm pendant, produced a virtual scenario when transferred to software RoboDK. With this it was possible to modify the laser track or the substrate morphology to suit other application scenarios. Thus, this methodology development was able to optimize automated cladding processes; besides producing a mirror-virtual interface, contributing to the methodology adaptation to other scenario specifics, quickly and at low-cost way.
Keywords
LASER Cladding, robotic arm, laser dilution, clad angle
