Mrs. Myriam SLEIMAN
,
ICB PMDM UMR 6303, CNRS, Univ. Bourgogne Franche-Comt , UTBM, F-90100 Belfort, France, Belfort, France
Dr. Geoffrey Darut
,
ICB PMDM UMR 6303, CNRS, Univ. Bourgogne Franche-Comté, UTBM, F-90100 Belfort, France, Belfort, France
Prof. Marie-Pierre Planche
,
ICB PMDM UMR 6303, CNRS, Univ. Bourgogne Franche-Comté, UTBM, F-90100 Belfort, France, Belfort, France
Mr. Ralph Seulin
,
ICB PMDM UMR 6303, CNRS, Univ. Bourgogne Franche-Comté, UTBM, F-90100 Belfort, France, Belfort, France
Prof. Jean Jacques Gonzalez
,
LAPLACE, UMR 5213 CNRS-INP-UPS, Université de Toulouse, Toulouse, France
Prof. Pierre Freton
,
LAPLACE, UMR 5213 CNRS-INP-UPS, Université de Toulouse, Toulouse, France
Dr. Francis Sambou
,
LAPLACE, UMR 5213 CNRS-INP-UPS, Université de Toulouse, Toulouse, France
Dr. Armando Salito
,
Gulhfi AG, Schweiz, Switzerland
Mr. Manfred Rösli
,
Guhlfi Consulting AG Switzerland, Schweiz, Switzerland
To minimize arc voltage fluctuations, it is imperative to restrict the arc's movement. Cascaded plasma torch configurations have been developed to achieve this objective. The modular torch, employed in this study, represents one of the new designs. Featuring a specific configuration, different nozzle structures (length and inner diameter) can be used.
This research aims to investigate experimentally the effects of particle characteristics (velocity and temperature), injection, and powder mass flow rate on coating quality.
After analyzing the influence of torch geometry and operating parameters on plasma properties and particle characteristics, the conclusion highlights that careful selection of operating parameters, geometry, injection, and powder mass flow rate can result in high-quality coatings with reduced processing time by 40 to 50% when passing from 30 to 60g/min.
The findings demonstrate that (1) increasing powder mass flow rate can decrease processing time without compromising coating quality compared to conventional torches, (2) reducing injector diameter can enhance torch efficiency.
