Validating the weldability with flux core arc welding “FCAW” for deteriorated naval steels (FLUX CORED ARC WELDING)

  • Alfonso Patarroyo
  • Elvis Solano
  • Fabio Cueca
  • Fernando Rojas
  • Alfredo Morales

Abstract

Repairs and changes of steel plates in the structure of the vessels where it is possible to find steels with a high degree of deterioration need reliable welded joints in naval steel of the type ASTM A–131 Gr. A new to old. Due to the fact that the variables associated to the weldability of the materials to be repaired are not known, it is necessary to make a study on the weldability of steel ASTM A131 Gr A, in full penetration seams or junctures, under the various parameters involved in the welding process, to determine the influence of the corroding residues that affect the application of welding compounds through the analysis of the metallurgical reactions of liquid condition in order to select the contributing materials with the alloy elements that are able to prevent these phenomena and to recommend the best practices for the electric arc welding process with tubular electrode with FCAW flux core.

References

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CASTILLA, Iván J. UNFRIED, Jimmy S. Soldabilidad de un acero microaleado utilizando el proceso SMAW y metal de aporte ferrítico de alta resistencia. Revista Ciencia y Tecnología de Buques Numero 3 Volumen 2. Julio de 2008.

AMERICAN WELDING SOCIETY AWS, D1.1/D1.1 M:2006 Structural Welding Code – Steel No 1.3)

HERRERA MELO, Oscar Javier. FUNDAMENTOS DEL PROCESO, Soldadura por arco con núcleo de fundente "FCAW", 2007.

WELDING HANDBOOK. Volume 2. Welding Processes Chapter.5 p. 159.

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WELDING HANDBOOK. Volume 2. Welding Processes Chapter.5 p. 174.

Published
2010-01-30
Section
Scientific and Technological Research Articles