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_RP05-0037
Tribological Performance Analysis of Textured Cutting Insert Created Via High Speed Micromilling Process
1Department of Mechanical Engineering, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Telangana, India
2Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India
ABSTRACT
In the present work, surface texturing of the tungsten carbide insert has been created by high speed micromilling to analyze the effect of texturing of rake surface on the tribological performance of the insert. The created textures are in the form of circular dimple and depth of dimple is kept fixed, as 50 µm. The average surface roughness of 303.5 nm for the created texture has been achieved. Pin-on-disk analysis of textured surfaces shows the reduction of 23% in coefficient of friction at a pin load of 20 N. The increase of pin load to 30 N during pin-on-disk test shows the reduction of 31% in coefficient of friction for the textured rake of insert. A low wear of textured rake was also achieved at 20 N load of pin but the wear has been increased for textured rake at the pin load of 30 N after 600 seconds of sliding of the pin over the disk. The analysis of the wear of texture rake surface indicates that large lubrication pocket can be achieved with the textured insert.
Keywords: Tungsten Carbide Insert, Surface Texturing, Cutting Tool Life, Friction Coefficient, Cutting Tool Wear.
1Department of Mechanical Engineering, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Telangana, India
2Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India
ABSTRACT
In the present work, surface texturing of the tungsten carbide insert has been created by high speed micromilling to analyze the effect of texturing of rake surface on the tribological performance of the insert. The created textures are in the form of circular dimple and depth of dimple is kept fixed, as 50 µm. The average surface roughness of 303.5 nm for the created texture has been achieved. Pin-on-disk analysis of textured surfaces shows the reduction of 23% in coefficient of friction at a pin load of 20 N. The increase of pin load to 30 N during pin-on-disk test shows the reduction of 31% in coefficient of friction for the textured rake of insert. A low wear of textured rake was also achieved at 20 N load of pin but the wear has been increased for textured rake at the pin load of 30 N after 600 seconds of sliding of the pin over the disk. The analysis of the wear of texture rake surface indicates that large lubrication pocket can be achieved with the textured insert.
Keywords: Tungsten Carbide Insert, Surface Texturing, Cutting Tool Life, Friction Coefficient, Cutting Tool Wear.
