INFLUÊNCIA DOS PARÂMETROS DE USINAGEM NA RUGOSIDADE SUPERFICIAL E NO PERFIL DE DUREZA DO AÇO AISI 316L SUBMETIDO A PROCESSO DE TORNEAMENTO

Abstract

The use of materials resistant to corrosion, and in substitution of materials attacked by corrosive agentes, has been taking on worldwide proportions in the industrial, food and offshore sectors, as long as these have the same mechanical characteristics as the replaced materials. The aim of this pape ris to address the existing relations between machining parameters, tool geometry and the surface integrity of AISI 316L stainless steel in the turning process. The tests performed on the CNC lathe using variations in the cutting speed and tool feed parameters. While with regard to the tools, the dimensions of the tip radius of the interchangeable inserts were varied, as well as the absence of any lubricant coolant. Where, for each condition, the measurement of the average roughness of the core of the machined sample and its surface was performed, subsequently making the comparison of the tests. It was verified that the tool tip radius and the feed have a greater influence on the surface roughness, while the cutting speed did not have a significant influence. The results also indicate that there is a variation in the hardness of the machined surface in relation to the core of the samples, however, each condition indicates diferente values of hardness, which shows that the variation in cutting parameters also changes the surface integrity of parts submitted to the machining process.