SURFACE QUALITY AND EFFORTS IN MILLING OF HARDENED SAE 4340 STEEL WITH TECHNICAL MINIMUM QUANTITY OF FLUID (MQF)
MANOEL CLEBER DE SAMPAIO ALVES1; EMANUELE SCHNEIDER CALLISAYA1; Cleverson Pinheiro1; Larissa Ribas de Lima1; Giovanni Faus Salussolia1; Marcel Yuzo Kondo1; Marcos Valério Ribeiro1
1 UNESP/FEG-GUARATINGUETÁ
doi:10.20906/CPS/COB-2015-0213
Resumo
Much research and industries are seeking to decrease the use of lubricating fluids and coolants in machining processes without losing quality of the processed parts. This decrease is due to the high cost of maintenance and disposal of these fluids, in addition to the severe damage they bring to the health of workers and the environment. The purpose of this study was to analyze the surface quality and efforts in SAE 4340 steel milling hardened using minimal amount of fluid (MQF) at different flow rates compared to conventional lubrication in up milling and down milling with carbide tools. Was used a CNC Machining Center brand DMG model DMU50ECO series DMG Ecoline. For the various conditions was analyzed the total roughness and average roughness. Also analyzed the consumed power during the process. The roughness measurement was performed by Mahr profilometer MarSurf and model M300. For acquiring the consumed power were used Hall effect sensor brand LEM model AT 100 B10 and a data acquisition system. The results indicate that the roughness and the power consumed were favored with the use of coated carbide tools. The MQF process proved to be efficient in milling of hardened 4340 steel to the tools used resulting in low roughness on machined parts.
Palavras-chave: Roughness; SAE 4340 STEEL ; Milling; Power cutting; MINIMUM QUANTITY OF FLUID