The generalized energy equation is reduced into a simple form for conduction and convection modes of heat transfer across a hydrodynamic incompressible fluid film in the deformation phase of plane-strain forging. Expressions for the temperature, velocity, and flow distributions are obtained by solving the energy equation with appropriate boundary conditions. Application of this analysis is illustrated for the film formation process in the deformation phase of liquid lubricated plane strain forging. The analysis indicates that the Peclet number plays an important role in deciding the variation of lubricant film thickness with position and time in the deformation phase. [S0742-4787(00)02504-2]

Issue Section:
Technical Papers
Keywords:
hydrodynamics, lubrication, tribology, heat transfer, thermal analysis, phase diagrams, fluid dynamics, viscosity, shear flow
Topics:
Deformation, Flow (Dynamics), Forging, Lubricants, Temperature, Plane strain, Convection, Film thickness, Heat transfer, Thermal analysis
1.
Wilson
,
W. R. D.
,
1974
, “
An Isoviscous Model for the Hydrodynamic Lubrication of Plane Strain Forging Processes with Flat Dies
,”
ASME J. Lubr. Technol.
,
96
, pp.
539
–
546
.
2.
Mahdavian
,
S. M.
, and
Wilson
,
W. R. D.
,
1976
, “
Lubricant Flow in a Plastohydrodynamic Work Zone
,”
ASME J. Lubr. Technol.
,
98
, No.
1
, pp.
16
–
21
.
3.
Dow
,
T. A.
,
Kannel
,
J. W.
, and
Bupara
,
S. S.
,
1975
, “
A Hydrodynamic Lubrication Theory for Strip Rolling Including Thermal Effects
,”
ASME J. Lubr. Technol., Series. F
,
97
, pp.
4
–
13
.
4.
Bhatt
,
V. K.
, and
Sengupta
,
D. K.
,
1996
, “
Analysis of Thermal Effects in the Yield Phase of Hydrodynamic Lubricant Film in Plane Strain Forging
,”
ASME J. Tribol.
,
118
, pp.
880
–
885
.
5.
Wilson
,
W. R. D.
, and
Mahdavian
,
S. M.
,
1974
, “
A Thermal Reynolds Equation and its Application in the Analysis of Plasto Hydrodynamic Inlet Zone
,”
ASME J. Lubr. Technol.
,
96
, pp.
572
–
578
.
6.
Oyane
,
M.
, and
Osakada
,
K.
,
1969
, “
The Mechanism of Lubricant Trapping Under Dynamic Compression
,”
Bull. JSME
,
12
, No.
49
, pp.
149
–
155
.
7.
Bhatt, V. K., 1989, “Theoretical Investigations on Fluid Behavior in Metal Forming,” Ph.D. thesis, submitted to the Faculty of Engineering, University of Allahabad.
8.
Wilson
,
W. R. D.
, and
Carpenter
,
W. B.
,
1973
, “
A Thermal Hydrodynamic Model for the Lubrication Breakdown in Upsetting Between Overhanging Dies
,”
Wear
,
24
, pp.
351
–
360
.
9.
Sadeghi
,
F.
, and
Dow
,
T. A.
,
1987
, “
A Thermal Effects in Rolling/Sliding Contacts: Part 2—Analysis of Thermal Effects in Fluid Film
,”
ASME J. Tribol.
,
109
, pp.
512
–
517
.
10.
Wilson
,
W. R. D.
, and
Wong
,
C. J.
,
1974
, “
Analysis of the Lubricant Film Formation Process in Plane Strain Forging
,”
ASME J. Lubr. Technol.
,
96
, pp.
605
–
610
.
Copyright © 2000
 by ASME
You do not currently have access to this content.