Physical and Numerical Analysis of Extrusion Process for Production of Bimetallic Tubes Page: 25 of 108
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Ram displacemeni -
rD r 1
Ram displacemem --..
(a) Deperdence of the rxtrusion load on lie rani displacement:
a-h = Direct extrusion
a'- = Indirect extrusion
(b) Division of the work of deformation
A = Work of upsetting
B = iWork needed to initiate deformtation
C = Work of deformation
L = Work to overcon friction and shearinig in direct rxtrusion
Fig. 3.1. Schematic load versus ram displacement curves for extrusion shows: (a) the difference
between direct and indirect extrusion and (b) division of the work of deformation of the direct
extrusion process (Source: Laue, K., and Stenger, H. Extrusion, Metals Park, American Society for
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Misiolek, W. Z. & Sikka, V. K. Physical and Numerical Analysis of Extrusion Process for Production of Bimetallic Tubes, report, August 10, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc884646/m1/25/: accessed February 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.