Estudo para soldagem de tubos sem costura API 5L X65Q PSL 2

Abstract

High Strength and Low Alloy (ARBL) steels have been increasingly required in activities related to the exploration and transportation of oil, natural gas and their derivatives. This occurs due to its characteristics, such as high strength and toughness. This study aims to develop a study of the parameters and processes related to welding of seamless pipes manufactured with steels of type API 5L X65Q PSL 2, according to the requirements of API 1104 (1999). In addition, based on a Qualified EPS for welding the base metal cited, according to the DNV-OS-F101 standard (2013), to compare the parameters used with those obtained in Bibliographic References. Finally, having carried out a study on API 1104 (1999) in addition to evaluating the appropriate parameters for welding API 5L X65Q PSL 2 steel according to this standard and Bibliographic References. In addition, for enrichment of the study, having obtained a Qualified EPS for welding the base metal cited, according to the standard DNV-OS-F101 (2013), to conduct a brief study of this. This EPS, attached to this work, will also be a bibliographic reference to obtain possible values of the parameters. Therefore, the objective is not to compare the API 1104 (1999) and DNV-OSF101 (2013) standards, but rather a study to determine the essential variables and their possible values to be used in an EPS qualification, referencing API 1104 (1999) and other Bibliographic References, such as a qualified EPS according to DNV-OSF101 (2013).