Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
SURFACE QUALITY AND TOOL WEAR ANALYSIS ON THE TURNING OF HARDENED AISI 4340 STEEL USING EXPERIMENTAL CERAMIC CUTTING TOOLS
Submission Author:
Emanuele Schneider Callisaya , SP
Co-Authors:
Emanuele Schneider Callisaya, Manoel Cleber de Sampaio Alves
Presenter: Emanuele Schneider Callisaya
doi://10.26678/ABCM.COBEM2019.COB2019-2414
Abstract
The work evaluates the performance of recently developed aluminum oxide cutting tools, analyzing the resulting surface quality and tools wear on the turning of hardened AISI 4340 steel. The aim of this project is to explore different alternatives of more economical cutting tools developed with national technology, since currently in Brazil the ceramic cutting tools are mostly imported, increasing the total machining costs. The turning process was carried out varying the cutting speed (160 and 200m/min), feed rate (0.05, 0.10 and 0,15mm/rot) and cutting depth (0.15 and 0.25mm), in order to allow the application of the experimental tools and validate the replacement considering the grinding roughness results. The DOE applied was the full factorial design to ensure the analysis of all interactions. To determine all significant correlations whiting the applied cutting parameters a statistical analysis of variance was done. It was possible to verify the viability of the process and to find the cutting condition that best satisfies the roughness parameters. Better surface quality was found for smaller values of feed rate. It was observed the occurrence of tools chipping; however, the minimum flank wear Vb was 0.36mm for lower cutting depths and feed rate (0.15mm and 0.05mm/rot).
Keywords
Hard turning, AISI 4340 steel, ceramic cutting tools, Roughness, Tools wear
