Análise dos defeitos de soldadura na fabricação de tanque metálico para armazenamento de combustível líquido

Abstract

The metal tanks used in the storage of liquid fuel, generally are manufactured with steel plates with low carbon content calendered and welded through GMAW/SAW and SMAW processes, depending on the place of manufacture, whether in closed sheds or in the field. The manufacturing processes can introduce defects in welded joints such as lack of fusion, lack of penetration, porosity bite, inclusions among others, which can compromise the structure or component, in relation to the resistance to the propagation of cracks and even the mechanical resistance. The present work aims to analyze the causes that lead to defects found in the welds of metal tanks, and present solutions to be avoided. Most of the defects found in welding are caused by inadequate welding practices. Once the causes are determined, the operator can easily correct the problem. (TRADUÇAO NOSSA)