Estudio del proceso de soldadura GTAW para aceros inoxidables y aluminio.

Abstract

The objective of this work is to make a guide about the process of arc welding with non-consumable tungsten electrode, known by its acronym in English as GTAW or TIG, in non-ferrous metals. An arduous research and compilation of data regarding the welding process is elaborated starting with a description of the process mentioning its origin, the parts that conform the system, its applications, advantages and disadvantages with respect to other processes. The tungsten electrodes available in the market are mentioned as well as their shape and their specific application. Also, the protection gases or combination of gases recommended to improve the welding process depending on the different types of non-ferrous alloys are mentioned. This process allows obtaining high quality welds with most of the non-ferrous metals, therefore, the necessary equipment to perform the welding is indicated, as well as the currents that can be applied in different needs. The information collected is analyzed based on the welding equipment. The equipment can be manual, semiautomatic and automatic. The welding characteristics of this equipment are analyzed in order to determine the most important parameters to perform different welds. For this purpose, the capacity to weld different joints, positions, the necessary currents for different materials and welding techniques are considered. To finish, some tables are made with the approximate values of each parameter considered important for the realization of welding in different requirements. This process is the best to obtain good quality beads in the metals most used by the industry such as: aluminum, copper, titanium, magnesium, nickel and their alloys.