Análise da qualidade superficial no processo de torneamento externo do aço SAE-1045, com ferramentas PVD, CVD E CERMET

Abstract

With technological increase in the area of new metallic materials and composites, in order to meet the needs and applications imposed on them, studies of new tools, methods and processes are necessary to be able to manufacture these materials without compromising their structure and consequently their structural integrity. The field of machining is fraught with constant challenges as it is a combination of raw materials, machines and tools to obtain parts, products and tools. Worldwide the machining industry is responsible for numerous jobs as the process is found directly or indirectly in many of the planet's manufactured products. However, in order to reach the finishing and material productivity indexes, new tools or covers are always evolving, seeking to attend the machinability of the new materials. In this work will be studied carbide tools with two covers being these; CVD (chemical vapor deposition), PVD (physical vapor deposition) and CERMET tool. All with the same geometry to perform qualitative analysis on the surface finish of SAE-1045 steel, performed in the external turning process, with a tool WNMG080404 HQ and WNMG080408 HQ, varying coverage, cutting speed (m / min), depth of cut (ap), feed (m / min) and nose radius (re). CNC lathe will be used to make the parts, and later analyzed with SJ-201 Mitutoyo roughness tester, to evaluate and measure the surface roughness of the samples. And so, classify surface finish coating and the best combinations found in the experiments. [resumo fornecido pelo autor]