Análisis y calificación de procedimientos de soldadura aplicando el código ASME 2013 para cilindros a presión de acero A537 CL1 de 38 mm de espesor.

Abstract

The work seeks to develop a procedure qualification (WPS) and qualification record (PQR) with GMAW STT welding process, qualifying welded steel sheets A537 Class 1. Destructive and no destructive tests were performed following the ASME Code and its acceptance criteria. Nondestructive testing of liquid penetrant and ultrasound was applied for its versatility and easy acceptance. Of nondestructive testing procedure qualification for the tensile test and bending applied; the results were checked in conjunction with the code and better efficiency was determined regarding welding processes to be replaced as SMAW and SAW are processes for the root pass. WPS was drafted with the support of PQR as welding process variables based on essential, nonessential and additional required by the ASME Code Section IX to qualify the welding process pressure vessels. Additionally, the metallographic analysis was performed following ASTM purposes of characterizing the heat affected zone and determines the microstructures generated in welding. For the analysis of welded joints in the case of process GMAW STT – SAW TANDEM welding seams full filling was made in the beveling, the continuing with the measurement of Vickers hardness to make a quantitative comparison of the variation in hardness of different solders used variation in the hardnesses of different solders used