Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Optimization of Cutting Parameters Considering Surface Roughness When Milling AISI 304 Steel Using Coated Wc-Co and Tialn / Wc-Co Coated
Submission Author:
Murilo Pereira Lopes , MG
Co-Authors:
Murilo Pereira Lopes, Jose Rubens Gonçalves Carneiro, Gilmar Cordeiro da Silva, Carlos Eduardo Santos, Ítalo Bruno dos Santos
Presenter: Murilo Pereira Lopes
doi://10.26678/ABCM.COBEM2019.COB2019-0588
Abstract
This paper presents an investigation on the behavior of the roughness response Ra and Rz on the surface of AISI 304 steel submitted to the process of frontal machining by dry milling, using different cutting tools and varying the cutting parameters. The study was based on experimental planning techniques through RSM response surface methodology. The parameters used in the experiments were cutting speed Vc, m / min, feed per tooth fz, mm/tooth and depth of cut ap, mm. To compare the results, WC-Co hard metal cutting tools with and without TiAlN coating were used. The results showed that, for uncoated cutting tools, the parameter fz, quadratic, 30.03% and linear, 28.47%, caused the greatest effects on the roughness response Ra and Rz respectively. For the tools with TiAlN coating, the interaction between the parameters Vc and fz, caused a greater influence on the roughness response Ra, 20,92% and Rz 35,40%. The second-order polynomial regression model and ANOVA were efficient for the investigation. The use of TiAlN coated tools, compared to the uncoated specification used in the experiment, pointed to low roughness indexes. A mathematical model capable of describing the roughness behavior as a function of the investigated cutting parameters was developed.
Keywords
milling, Stainless Steel, Roughness, Optimization, Analysis of variance
