Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
STEEL FOR MECHANICAL APPLICATIONS: MACHINABILITY EVALUATION OF THREE SIMILAR MEDIUM-CARBON ALLOYS
Submission Author:
André Dorigueto Canal , SP
Co-Authors:
André Dorigueto Canal, Rafael Mundim, Paula Montenegro, Anderson Vicente Borille, Eliene Oliveira Lucas
Presenter: Rafael Mundim
doi://10.26678/ABCM.COBEM2017.COB17-0717
Abstract
This study evaluated the machinability in turning of three different medium-carbon steel alloys similar to AISI 1045. Two of these alloys were candidates for replacing a former third material. For the two new candidate materials, initial tests had indicated that one of them could provide better chip control, despite their similar processing route and mechanical properties. This study aimed to evaluate machinability differences for the three materials in terms of chip control, chip root analysis and machining forces. A merit index was proposed for quantifying chip control which allowed for summarizing the behavior of all materials in a single indicator. Chip roots obtained with an in-house built quick-stop device allowed for identification of adhesion formation in the new candidate materials which aided on discussing the origin of previously observed differences. Cutting force tests allowed conclusions to be made in relation to the effect of feed rate and cutting speed. By combining all results it was concluded that despite a better chip control observed for one of the new candidate materials at lower speeds, a large gap in terms of machinability still needs to be overcome to meet the same performance as the previously used material.
Keywords
Turning, AISI 1045, chip formation, cutting force, quick-stop device
