Proceedings of the
World Congress on Micro and Nano Manufacturing (WCMNM 2022 )
19–22 September 2022, Lueven, Belgium
doi:10.3850/978-981-18-5180-3_RP01-0057
Micromilling H13 Tool Steel and Tool Life Criteria for Coated Microtools
1Texas A&M University, College Station, Texas, USA
2The University of Sao Paulo, Sao Carlos, Brazil
3Federal University of Uberlândia, MG, Brazil
4Universidade de Brasília, Brazil
ABSTRACT
This research investigates micromilling of wrought and additive manufactured H13 tool steel. Performance of six different coating on microtools in minimum quantity lubrication was studied. The evolution of surface finish was an effective technique to monitor a microtool condition without interrupting the machining operation. A thin 1-2 µm coating layer would be ineffective, thus ending the tool life, when a machined surface finish reached three times the theoretical surface finish value.
Keywords: Micromilling, Tool wear, Surface finish, Microtool life.
1Texas A&M University, College Station, Texas, USA
2The University of Sao Paulo, Sao Carlos, Brazil
3Federal University of Uberlândia, MG, Brazil
4Universidade de Brasília, Brazil
ABSTRACT
This research investigates micromilling of wrought and additive manufactured H13 tool steel. Performance of six different coating on microtools in minimum quantity lubrication was studied. The evolution of surface finish was an effective technique to monitor a microtool condition without interrupting the machining operation. A thin 1-2 µm coating layer would be ineffective, thus ending the tool life, when a machined surface finish reached three times the theoretical surface finish value.
Keywords: Micromilling, Tool wear, Surface finish, Microtool life.
