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: www.sciencedirect.com/science/article/pii/S2212827116301895