Estudo de propriedades mecânicas e parâmetros do material H13 depositado por WAAM GTAW

Abstract

Additive manufacturing is an alternative way on the making of objects which has grown over the years. Considered as an alternative of parts construction compared to more conventional methods as machining and foundry. In additive manufacturing the object production methodology is done in layers until you get the required final shape, different from the machining process which consists in the subtraction of the material until reaching the wished shape. There are different methods of manufacturing the piece, for this job is selected the wire arc additive, as known as WAAM. In it encompasses the weldings processess, for this researched case, the process tungsten inert gas welding, also known as GTAW or TIG process. Knowing there are a lot of ways of making certain products, for this Project, it was opted to the study for the geometry analisys and mechanical properties of the stacking with H13 tool steel with the selected parameters of the VP50IM tool steel by the WAAM GTAW process. During in the work, the selected parameter shown high deposition energy to the H13, it was not be propitious for the process, about it opted to continue with the selected parameter and called it parameter A, and chosen a B parameter for the work, with just a difference in the current welding, where reduced it to the less energy deposition. Given the geometric analysis, inscribed area, mobility and dilution, parameter B showed greater effectiveness, which Strong contributes for the steaky realization, and the both microestructure shown similar, to show higher dendritc formation on the top than the base, due to the tempering process that happen on the underlyers layers when occurs the layer deposition. The hardness analisys shown the parameter B with the higher hadness, however the parameter A have the best hadness distribution along the steaky. The tensile strength tests did not show the high difference between the parameters, but in removal region of the steaky. The samples removed on the base shown the higher plastic deformation than samples removed on the top, and the maximum stress are near relatively the others samples.