The team is extruding a billet that is 80 mm long with diameter of 40 mm is directly to a diameter of 20 mm. The extrusion die has a die angle of 75°, see Figure 1. For the work metal, K = 600 MPa and n = 0.25. In the Johnson extrusion strain equation, a = 0.8 and b = 1.4. Remaining billet length 75 Ram pressure, p Do Figure 1: Extrusion process. Determine the following design parameters: (a) Extrusion strain (b) Ram pressure at L = 80, 40, and 10 mm. (c) Draw the relationship between the ram pressure and billet length and discuss the results. What are your recommendations to decrease the required ram pressure?

The team is extruding a billet that is 80 mm long with diameter of 40 mm is directly to a diameter of 20 mm. The extrusion die has a die angle of 75°, see Figure 1. For the work metal, K = 600 MPa and n = 0.25. In the Johnson extrusion strain equation, a = 0.8 and b = 1.4. Remaining billet length 75 Ram pressure, p Do Figure 1: Extrusion process. Determine the following design parameters: (a) Extrusion strain (b) Ram pressure at L = 80, 40, and 10 mm. (c) Draw the relationship between the ram pressure and billet length and discuss the results. What are your recommendations to decrease the required ram pressure?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

The team is extruding a billet that is 80 mm long with diameter of 40 mm is directly to a diameter of 20
mm. The extrusion die has a die angle of 75°, see Figure 1. For the work metal, K = 600 MPa and n =
0.25. In the Johnson extrusion strain equation, a = 0.8 and b = 1.4.
Remaining billet length
75
Ram pressure, p
Do
Figure 1: Extrusion process.
Determine the following design parameters:
(a) Extrusion strain
(b) Ram pressure at L = 80, 40, and 10 mm.
(c) Draw the relationship between the ram pressure and billet length and discuss the results. What are
your recommendations to decrease the required ram pressure?

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