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_RP43-0005
Influences of Fit Clearance on Extrusion Force of Titanium Alloy Micro-Gears
School of Manufacturing Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
ABSTRACT
Compared with metal molds, graphite molds possess unique advantages for the quality of extruded titanium alloy micro-gears. However, graphite is prone to brittle fracture under extrusion load. In order to reduce the load during the extrusion process, this study assessed influences of fit clearance between the punch and the container on the extrusion force. The results demonstrated that large fit clearance could effectively reduce the extrusion force and ensure the continuity of extrusion process. However, large fit clearance significantly shortened the length of extrudate. Thus, the smallest fit clearance should be selected in the case that the graphite mold remains intact during the extrusion process, achieving the economical and high-efficiency sustainable production of titanium alloy micro-gears.
Keywords: Graphite Molds, Fit Clearance, Ti-6Al-4V Micro-Gear, Extrusion Force.
School of Manufacturing Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
ABSTRACT
Compared with metal molds, graphite molds possess unique advantages for the quality of extruded titanium alloy micro-gears. However, graphite is prone to brittle fracture under extrusion load. In order to reduce the load during the extrusion process, this study assessed influences of fit clearance between the punch and the container on the extrusion force. The results demonstrated that large fit clearance could effectively reduce the extrusion force and ensure the continuity of extrusion process. However, large fit clearance significantly shortened the length of extrudate. Thus, the smallest fit clearance should be selected in the case that the graphite mold remains intact during the extrusion process, achieving the economical and high-efficiency sustainable production of titanium alloy micro-gears.
Keywords: Graphite Molds, Fit Clearance, Ti-6Al-4V Micro-Gear, Extrusion Force.
