Desenvolvimento e validação de uma Especificação de Procedimento de Soldagem (EPS) utilizando o arame E71T-1C

The flux-cored arc welding, or FCAW, is a process that uses a flux-cored wire to join metals, being widely applied in the industry due to its high deposition rate and versatility in different materials and working conditions. Its main applications involve the construction of metal structures, manufacturing of heavy equipment, welding of pipelines, and in adverse conditions, such as wind and humidity. This work focused on confirming the feasibility and effectiveness of using the E71T-1C wire in the union of plates used in equipment such as truck bodies, buckets, and other projects directed to the mining sector. This investigation was based on the development and validation of a Welding Procedure Specification (WPS). To achieve this purpose, a welding process of two plates with S690QL specification using the E71T-1C wire from Böhler brand was carried out. Following the parameters defined in the research, tests were conducted to determine if the joint produced with such specifications could resist the efforts related to each product developed with this type of joint. The results indicated that, although the strength of the joint was lower than that of the base metal, this strength was considered adequate to withstand the necessary efforts. As final considerations, it can be affirmed that, despite some limitations observed, the E71T 1C welding wire presents itself as a viable and effective option for welding S690QL plates, respecting the specifications and parameters of the procedure.