Home   >   CSC-OpenAccess Library   >    Manuscript Information
Full Text Available

(461.38KB)
This is an Open Access publication published under CSC-OpenAccess Policy.
Publications from CSC-OpenAccess Library are being accessed from over 74 countries worldwide.
Erosion and Cavitation Tests Applied to Coating Welded with Blends of Stainless Steel and Cobalt Alloys
Hebert Roberto da Silva, Valtair Antonio Ferraresi, Rosenda Valdes Arencibia
Pages - 1 - 14     |    Revised - 31-03-2018     |    Published - 01-12-2018
Volume - 11   Issue - 1    |    Publication Date - December 2018  Table of Contents
MORE INFORMATION
KEYWORDS
GMAW Cold Wire, Cobalt Alloys, Erosion, Cavitations.
ABSTRACT
The process GMAW with its your applications using two wires pointing in the market as an alternative to coating when high productivity is desired. Potential variants emerge from this process as GMAW cold wire and GMAW double wire. One of the biggest difficulty is the setting of its parameters, which in addition to duplicate compared to conventional GMAW, act in a dependent manner. A greater understanding of this technology applied to coatings on turbines in various positions is critical so that you can master the process and its variables, aiming to enhance the application in industry. It was proposed in this study an experimental evaluation to verify the influence of some variables on the profile of cord and wear resistance. For this it is proposed in this paper to make deposits with weld metal AWS 308LSi stainless steel and alloys of cobalt (Stellites 6 and 21) plates in carbon steel SAE 1020 in flat positions. In the characterization of wear in the lining was used the determination of the hardness and surface topography. It is concluded that cobalt alloys have superior resistance to erosive damage with emphasis on the Stellite 21 alloy in erosion and cavitation in Stellite 6. In an intermediate position with respect to wear are mixtures of austenitic stainless steel and cobalt alloys. Therefore, it is essential to study welding processes with multiple wires as proposed in this paper aiming the best combination of alloys for resistance to cavitation-erosion phenomena.
1 BibSonomy 
2 Doc Player 
3 Scribd 
4 SlideShare 
1 Casas, W. J. P.; Henke, S. L.; Novick, N. Tensile tenacity of tempered and tempered CA6NM steel and its welded joint without TTPS. Welding & Inspection, São Paulo, v. 13, n. 1, p. 25-31, jan./mar. 2008. Quarterly. ISSN 0104-9224 (printed).
2 Motta, M. F. Application of the Pulsed MIG / MAG Process with Double Wire and Isolated Potentials in Coating Welds. 2002. 153 p. Thesis (Doctorate), Federal University of Santa Catarina, Florianópolis, 2002.
3 Levin, B. F.; Dupont, J. N.; Marder, A. R. Weld overlay coatings for erosion control. Wear, n. 181-183, p. 810-820, 1995.
4 Nsoesie, S. et al. Analytical modeling of solid-particle erosion of Stellite alloys in combination with experimental investigation. Wear, n. 309, p. 226-232, 2014.
5 Procopiak, L. A J. Cavitation resistance of three welded coatings. Dissertation, Federal University of Santa Catarina, 1997.
6 Ribeiro, H. O. Development of alloys for coatings by PTA resistant to cavitation. 2007. Thesis (Doctorate in Sciences and Materials Engineering), Federal University of Santa Catarina, 2007.
Dr. Hebert Roberto da Silva
School of Production Engineering Federal University of Uberlandia Ituiutaba, Zip Code 38304-402, Brazil - Brazil
hebert.roberto@ufg.br
Professor Valtair Antonio Ferraresi
School of Mechanical Engineering Federal University of Uberlandia Uberlandia, P.O.Box 593, Zip Code 38400-902, Uberlandia, Brazil - Brazil
Professor Rosenda Valdes Arencibia
School of Mechanical Engineering Federal University of Uberlandia Uberlandia, P.O.Box 593, Zip Code 38400-902, Uberlandia, Brazil - Brazil