| Type | Conference |
|---|---|
| Title | Relation between coefficient of friction and surface roughness of workpiece in bulk plastic deformation |
| Source | Asiatrib-2018, pp. 231-232 |
| Author | S. Kamitani, A. Yamabe, S. Fukumoto, S. Syahrullail, Y.M. Guo |
Coefficients of friction of mineral oils
under bulk plastic deformation were measured to
understand lubrication conditions in the metal forming
process by using plane strain extrusion apparatus. The
apparatus consisted of the container wall, taper die,
plane plate tool and billet (workpiece). The detection
part of frictional force was placed on the surface of
plane plate tool and that part was located in the
deformation zone of billet. Relation between coefficient
of friction and surface roughness of billet was
investigated. The surface roughness parameter S is
effective parameter to evaluate coefficient of friction
from surface condition of partially extruded billet.