Conversion of oxyacetylene filler metal R-FeCr in E-FeCr for hardfacing of parts submitted to erosion wear
Keywords:
erosion wear, hardfacing, SMAW, operational behaviour, microstructureAbstract
The present work is a study for the conversion from oxiacetylene filler metal R-FeCr to electric arc process with filler metal E-FeCr for surface coating of erosive wear parts, particularly clay extruder screws, due to the need to increase productivity hardfacing processes and reduce deformation without reducing the properties of the deposits. The study was based on a formulation of a low hydrogen coating tested in previous works, which was applied by immersion. Deposits were made using a simulator which allows carrying out handing welding without the welder's direct interference, varying the welding current. In this way, were determined the technical-operative characteristics of the consumable in study (fusion rate, deposition rate, real efficiency, operating stability, metallography and hardness of the deposit). The analysis of these characteristics, allowed to demonstrate the technical feasibility of this conversionDownloads
References
AMERICAN SOCIETY FOR METAL. 1992: Friction, Lubrication, and Wear Technology. Volume 18, ASM International, 1 879 p.
AMERICAN WELDING SOCIETY. 2002: A5.13 Specifications for Surfacing Welds Rods and Electrodes., 22 p.
BRANDI, S. D.; TANIGUCHI, C. & LIU, S. 1991: Analysis of Metal Transfer in Shielded Metal Arc Welding. Welding Journal, October: 261-270.
BUCHELY, M. F.; GUTIÉRREZ, J. C.; LEÓN, L. M. & TORO, A. 2006: The effect of microstructure on abrasive wear of hardfacing alloys. Wear 259: 52-61.
CARY, H. B. 1994: Modern Welding Tecnology. Third Edition. Regents/Prentice Hall, New York, 800 p.
COELHO, A. & FERRARESI, A. 2009: Análise da Microestrutura e da Resistência al Desgaste de Revestimento Duro Utilizado pela Indústria Sucroalcooleira. Soldagem & Inspecao 14(2): 140-150.
CRUZ-CRESPO, A.; FERNÁNDEZ-FUENTES, R. & SCOTTI, A. 2009: The Influence of Calcite, Fluorite, and Rutile on the Fusion-Related Behavior of Metal Cored Coated Electrodes for Hardfacing. Journal of Materials Engineering and Performance 32(Sept): 41-47.
CRUZ-CRESPO, A.; PERDOMO, L.; PÉREZ, M. R.; FERNÁNDEZ, R. & ORTIZ, T. M. 2006: Obtención de un fundente aglomerado aleado y un electrodo tubular revestido con el empleo de FeCrMn y escoria de la reducción carbotérmica de minerales. En: Congreso da Sociedade Brasileira de Soldagem. Belo Horizonte, Brasil, octubre, 26-32.
CRUZ-CRESPO, A.; SCOTTI, A. & RODRÍGUEZ-PÉREZ, M. 2008: Operational behavior assesment of coated tubular electrodes for SMAW hardfacing. Journal of Materials Processing Technology 199: 265-273.
DA, L.; LIGANG, L.; YUNKUN, Z.; CHUNLEI, Y.; XUEJUN, R.; YULIN, Y. & QINGXIANG, Y. 2009: Phase diagram calculation of high chromium cast irons and influence of its chemical composition. Materials and Design 30: 340-345.
DE MELO, R. & VILLANI-MARQUES, P. 2009: Estudo Comparativo da Resistência ao Desgaste Abrasivo do Revestimento de Três Ligas Metálicas Utilizadas na Indústria, Aplicadas por Soldagem com Arames Tubulares. Soldagem & Inspeccao 14(4), Out/Dez: 329-335.
FARIAS, J. P.; BÁLSAMO, P. S. & SURIAN, E. S. 2004: The effect of wollastonite on operational characteristics of AWS E6013 electrodes. Journal of the Brazilian Society of Mechanical Sciences and Engineering 26(3): 17-21.
FERNÁNDEZ, J. E.; VIJANDE, R.; TUCHO, R.; RODRÍGUEZ, J. & MARTÍN, A. 2001: Materials selection to excavator teeth in mining industry. Wear 250: 11-18.
GULENC, B. & KAHRAMAN, N. 2003: Wear behaviour of bulldozer rollers welded using a submerged arc welding process. Materials and Design 24: 537-542.
LINCOLN ELECTRIC COMPANY. 2000: The Procedure Handbook of Arc Welding. Cleveland, Ohio, 783 p.
MARTÍNEZ-PRIETO, F. & MARTÍNEZ-ESCANAVERINO, F. 1997: Teoría y Práctica del Rozamiento. Editorial CUJAE, La Habana, 243 p.
MAZEL, Y. A. 2006: Development of high-productivity high-alloyed electrodes. Welding International 20(11): 913-917.
REHFELDT, D. & BOLLMAN, A. 1987: Comparing Investigations of Covered Electrodes of Different Fabrications by Statistical Process Analysis’. IIW Documet 212-677-87.
SCOTTS, W. 1984: Proceedings of the International Conference on Tribology in Mineral Extraction. Nottingham, UK, 4-8 October, 45-52.
SHARMA, B. C. 2006: Process Stability Evaluation of Basic Coated Manual Metal Arc Welding Electrodes. Journal of the Institution of Engineers (India) 86(March): 39-48.
SOUZA, M. S.; GADOTTI, I. & SCOTTI, A. 1995: Um Banco de Ensaio para Avaliar Eletrodos Revestidos. En: XIII Congreso Brasileiro de Engenharia Mecânica – COBEM - II Congreso Ibero Americano de Engenharia Mecânica – CIDIM. Belo Horizonte, Brasil, 6-8 Dez, p. 62-69.
YAROVCHUK, A. V. 2005: Effect of ferrochrome content on the oxidation-reduction processes in welding slags based on titanium dioxide. Welding International 8: 651-656.
Published
How to Cite
Issue
Section
- Authors retain copyright and guaranteeing the right magazine to be the first publication of the work as licensed under a Creative Commons Attribution-NonCommercial that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors may establish separate supplemental agreements for the exclusive distribution version of the work published in the journal (eg, place it in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are allowed and recommended to disseminate their work through the Internet (e.g., in institutional telematic archives or on their websites) before and during the submission process, which can produce interesting exchanges and increase citations of the published work. (See The effect of open access)
