Visualizza wikitesto di Cutting forces analysis in additive manufactured AISI H13 alloy

'''Authors and full affiliations''': Filippo Montevecchi, Niccolò Grossi, Hisataka Takagi, Antonio Scippa, Hiroyuki Sasahara, Gianni Campatelli

'''Keyword''': Machinability; Milling; Cutting; Force

'''Purpose''': The objective of this work is providing a comparison between cutting forces in milling AM and wrought AISI H13 steel.

'''Design/methodology/approach''': The analysis was carried out for two different AM technologies: Laser-Engineered-Net-Shaping (LENS) and Wire-Arc-Additive-Manufacturing (WAAM). The analyzed material was AISI H13. Then Milling tests were carried out on wrought, LENS and WAAM specimens measuring the cutting forces with a table dynamometer. Measured cutting forces were used to compute cutting force coefficients as defined in Altintas et al. mechanistic cutting force model. 

'''Findings''': cutting force values are significantly higher in LENS and WAAM material. 

'''Practical implications''': this work highlights that AISI H13 AM material are harder to be machined, compared to the same material at wrought state. Indeed, results show a significant increase of cutting forces and cutting force coefficients. So a more powerful machine is needed, or a specific definition of cutting parameters for milling operation of AM parts.

'''Full reference''': MONTEVECCHI, Filippo, et al. Cutting forces analysis in additive manufactured AISI H13 alloy. Procedia Cirp, 2016, 46: 476-479.

'''Link''': [http://www.sciencedirect.com/science/article/pii/S2212827116301895 www.sciencedirect.com/science/article/pii/S2212827116301895]