Estudo da usinabilidade dos aços de livre corte: uma avaliação com base no teste de composição química

Abstract

The term machinability is widely used in research on various types of machining processes, as regards both the and the tool as well as the parameters involved in the machining of metals. This work aims to study the machinability of the free cutting steels based on chemical composition test proposed by Czaplicki taking into account the residual chemical elements present in free-cutting steels and analyzing the observed effects of each element present in the test equation chemical composition and its influence on the machinability index of the studied metals. From there, with chemical trace elements already defined along with their percentage levels present in free-cutting steels could be mounted an amount of data to analyze the machinability of these metals. The chemical composition of test used to determine the machinability index of the metals studied was generated in data analysis software because the needs of redo several times calculations and also be able to facilitate data entry and generation of graphics, thus enabling greater organization of results, and these have shown that elements such as carbon and silicon become harmful when their percentage levels are high and sulfur, manganese and phosphorus are beneficial to the machinability in controlled_percentage_levels