A STUDY OF SPECIFIC CUTTING FORCE IN MICROMILLING OF SUPERDUPLEX STAINLESS STEEL UNS S 32750

Vanessa Pinheiro (1) , Adriane Lopes Mougo (1) , Anna Carla Araujo (1)

1 UFRJ - Universidade Federal do Rio de Janeiro [Brasil] = Federal University of Rio de Janeiro [Brazil] = Université fédérale de Rio de Janeiro [Brésil]

Cutting force, and its modeling, has attracted constant attention of researchers due to its influence in tool life, workpiece quality and other factors related to machine-tool dynamics. The conventional models of cutting force were adapted to the micro scale process considering geometric characteristics, cutting parameters and microstructure. The specific cutting force can be calculated for each tool-piece: both mechanistic and experimental models could predict this important parameter. The objective of this work is to calibrate mechanistic and empirical models determining the cutting pressure coefficients using experimental data and make a critical comparison. The material machined in this experimental work is the superduplex stainless steel UNS S 32750 and the result shows that either models are a good approximation to calculate specific cutting force although they have different applicability.

Mots clés: micromilling; superduplex UNS S32750; mechanistic model; validation; specific cutting force

Domaines: Mécanique [physics.med-ph]

Vanessa Pinheiro, Adriane Lopes Mougo, Anna Carla Araujo. A STUDY OF SPECIFIC CUTTING FORCE IN MICROMILLING OF SUPERDUPLEX STAINLESS STEEL UNS S 32750. 23rd International Congress of Mechanical Engineering (COBEM 2015), 2015, Rio de Janeiro, Brazil. ⟨hal-03226778⟩