Análisis de la influencia del silicio en la soldabilidad del acero ASTM A588 mediante el proceso SAW

Abstract

The present work describes the weldability study of an A588 steel as the amount of silicon in the flux of the submerged arc welding process is increased, in order to know the ranges in which this process generates an improvement or decrease in the welding behavior, since no previous studies have been carried out. The process is carried out by adding ferrosilicon in defined proportions to the granulated flux of the SAW process. The samples obtained are intended to be studied by non-destructive testing, mechanical testing and metallographic analysis. The results reflect the beneficial influence of ferrosilicon on the microstructure of the material as the content of silicon and inclusions increases in the flux, causing greater formation of acicular ferrite. Stability in the tensile strength values and an increase in the hardness of the weld seam are observed. It is confirmed with the results of non-destructive tests that the increase in silicon content does not cause welding defects.