Estudio de soldabilidad de placas y tubería de acero inoxidable AISI-304 con aceros ASTM A36 y ASTM A500 utilizando el proceso de soldadura SMAW

Abstract

The present work studies the weldability of dissimilar materials of an AISI 304 stainless steel and carbon steel ASTM A36 in plates and ASTM A500 in piping, by means of the SMAW welding process with the use of five types of electrodes E7018, E6010, E312 E308 AND E309L. The experimental development methodology referred to the ASME IX standard for establishing acceptance criteria in the tests carried out is described. Starting with the acquisition of the materials, followed by the characterization of the materials to ensure the quality of the materials, then the cutting and preparation of the joints to be welded with the SMAW welding process. Once the welded joints were obtained, the non-destructive tests included visual inspection, penetrating inks and x-rays subsequently, destructive tests consisting of traction, face bending and root bending tests were carried out. The metallographic analysis of the VAC of the welded joints was then performed. The hardness test was carried out on 5 strategic points of the weld. Finally, we describe the analysis and comparison of the results obtained in the experimental development and thus obtain an optimal contribution material for welding dissimilar materials between stainless steels and low carbon steel.