Estudo da usinabilidade do aço de livre corte: Uma avaliação com base no teste de composição química a partir da variação do teor de carbono do aço abnt 12l14

Abstract

A machinability is a property that requires the interaction between the manufacturing process and the characteristics of the part material. In the case of steels, a chemical composition and as microstructures, a marked effect on the machinability of the metallic materials class. The aim of this work is to study the machinability of the free - cutting steels based on the chemical composition test proposed by Czaplicki, which takes into consideration the chemical elements residues that compose the free cutting steels, where an analysis is made of the effects examined each element that integrates the equation of the test of chemical composition and its interference without index of usability of the samples analyzed. Then, with the residual chemical elements established with their respective percentages that make up these metals, a table was made to arrange the amount of data, for a later study the effects of the machinability of the metals. Data analysis software was used to aid in the determination of the machinability index due to the need to have greater reliability for the results, to generate graphs with an arrangement for the interpretation of the obtained results. It is clear with the elements Phosphorus, Sulfur, Manganese, the positive effects on the machinability at moderate contents, and the latter two, in which they are combined and in contrast the elements Carbon and Silicon have presented themselves as harmful when their contents are high