You have been asked to work on some design problems and technically support the team working on extrusion and forging operations: 1) The team are 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 D. Dr Figure 1: Extrusion process. Determine the following design parameters: (a) Extrusion ratio. (b) True strain (homogeneous deformation). (c) Extrusion strain. (d) Ram pressure at L= 80, 40, and 10 mm. (e) Draw the relationship between the ram pressure and billet length and discuss the results. What are your recommendations to dccrcase the required ram pressure?

You have been asked to work on some design problems and technically support the team working on extrusion and forging operations: 1) The team are 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 D. Dr Figure 1: Extrusion process. Determine the following design parameters: (a) Extrusion ratio. (b) True strain (homogeneous deformation). (c) Extrusion strain. (d) Ram pressure at L= 80, 40, and 10 mm. (e) Draw the relationship between the ram pressure and billet length and discuss the results. What are your recommendations to dccrcase 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

See similar textbooks

Related questions

Q: An austenitic stainless steel plate with a width of 100 mm, a length of 150 mm and a thickness of 50…

A: Given: The width of the plate, w = 100 mm The length of the plate, L = 150 mm The height of the…

Q: A 3in long and 1in diameter billet is extruded in a direct extrusion operation with an rx = 4.0. The…

A: Write the extrusion ratio. rx=4 Write the length and diameter of the billet. L=3 inD=1 in…

Q: 4) mm in diameter. It is reduced by indirect extrusion to a 30 mm diameter. Die angle = 90°. In the…

A: As per our guidelines we are supposed to solve only 3 subparts if multiple subparts are asked .…

Q: Please give me full explanation in 1hour do it fast A 4-in-thick aluminum slab is 10 in wide and 100…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Figure 1. shows the rolling operation. Determine the position bn. of the neutral point? Neglect…

Q: As James orbits, he slams into a space elevator, peals himself off, and gets in. On the way down, he…

A: Write down the given values using suitable variables. Here L signifies leg length, m signifies leg…

Q: ti-pass cold rolling operation is to be used to red mill. The following data is provided for the ro…

Q: • A cylindrical billet that is 100 mm long and 40 mm in diameter is reduced by indirect (backward)…

Q: A hot rolling operation is being carried out on 250 mm wide and 25mm thick low carbon steel…

A: Calculate the final thickness. hf=1-0.2ho =0.8×25 =20 mm Calculate the strain. Strain ε=lnhohf…

Q: 1) Drawing: Consider a cylindrical rod fabricated from a linear strain hardening material with a…

A: Given:The constitutive relationship is .The original diameter of the rod is .For completely elastic…

Q: In a 'tandem' rolling process, a wide metal strip passes continuously between four sets of rolls,…

Q: No wrong answer please , i could downvote The piece of suture is tested for its stress relaxation…

Q: entry angle = 15o. The starting diameter is 0.100 in. And the final diameter = 0.080 in. The…

A: first of all find out tru strain and then mean flow stress from given data.refer below image.

Q: If the bar is reduced by extruding and the deformation efficiency is 70%, what is the extrusion…

A: Extrusion pressure=0.7×A0×F Without specific value for the force applied and the original area, I…

Q: What is the linear variation in the shear strain?

A: The change in shape obtained due to shear stress is defined by shear strain.

Q: A cylindrical 4135 cold-rolled steel workpiece has an upsetting load applied at room temperature…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

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

You have been asked to work on some design problems and technically support the team working on
extrusion and forging operations:
1) The team are 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
D.
Dr
Figure 1: Extrusion process.
Determine the following design parameters:
(a) Extrusion ratio.
(b) True strain (homogeneous deformation).
(c) Extrusion strain.
(d) Ram pressure at L= 80, 40, and 10 mm.
(e) Draw the relationship between the ram pressure and billet length and discuss the results. What are
your recommendations to dccrcase the required ram pressure?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A cylindrical specimen made of a Aluminum alloy, characterized by C= 310 MPa and m=0.07, has a diameter of 10 in. And it is 7 in high. It is upset by open-die forging with flat dies to a final height of 3 in at 200°C. Assuming that the coefficient of friction is 0.2. The reduction is done in 4 seconds. Density is 2.7gr/cm3 and Cp = 900J/Kg/°C Estimate the ideal temperature rise (°C, one decimal)
answer fast
Please answer all parts
find the die shape factor in an extrusion process, if the diameter of the extruded cross-section is =15 cm and the diameter of the circle of the same area as the extruded shape is = 10 cm
Calculate the ram pressure during indirect extrusion process when a cylindrical billet is 300 mm long and 150 mm in diameter used to produce a 45 mm diameter. In this process: a=0.8, b=1.4, K=275MPA, n=0.12.
Calculate (1) die pressure distribution and (2) forging force for plane strain forging (open die forging). Assume yield strength of the material is Y, and yielding criterion is von Mises. ho 2Lo h Forged to 2L xdx L 'x+value Note: Assume Zo Constant Plane strain Die pressure distribution h L L Die pressure distribution h MATERIAL L dx -(-1) Friction Hill Y L When 0; =Y P=Y' = Calculate forging force X L dF elemental volume Average pressure
Please solve d through g
A hot/cold rolling setup is shown right. The operation first hot rolls a 3/8” thick plate, 12” wide (w), of6061 Aluminum, to an intermediate thickness, then finally through cold rolling, down to 1/4” thick plate.The friction factor μ is assumed to be constant at 0.15 for the hot roll, 0.12 for the cold rolling stage. Thefirst set of rolls operate at 50 RPM. Also ignore any width increase during rolling. CW=13% or .13 What is the plate thickness (mm) prior to the last rolls, t1, if the last set of rollers perform cold work reduction listed below at .13 or 13% Note that 9.52 mm is equal to 3/8 of an inch.
...). A 450 mm-long sheet with a cross sectional area of 320 mm² is stretched with a force, F, until α = 22°. The material has a true-stress-true-strain curve o = 750 x 106 0.35 (a) Find the total work done, ignoring end effects and bending. (b) What is a max before necking begins? F 300 mm - 150 mm
A small connecting rod is forged from AISI 1015 steel at 1200oC. Calculate the forging force in a mechanical press at a speed of 200 mm / s when the die comes into contact with the part. The volume of the connecting rod is estimated to be 28680 mm3, and 20% of the starting material is expected to burn off as flash (flash). In the final form the projected area is 3500 mm2 without flash. The width of the flash is 7.6mm around 300mm in circumference.
Using average pressure formulas and ignoring barrelling, plot the force (vertical axis) versus reduction-in-height (horizontal axis is *100) curve in open-die forging of a cylindrical, annealed copper specimen whose height is 1 in and diameter is 1 in, from reduction-in-height of 0% to 75%, when the friction between the flat dies and the specimen ho-h ho is a) μ = 0 b) μ c) μ = 0.1 0.2
A 250 mm diameter circle is etched on a 400 mm x 400 mm x 12 mm piece of sheet metal. The elastic modulus is 190 GPa and Poisson's ratio is 0.3 for the material If stresses of 40 MPa and 75 MPa are applied in the x and y directions respectively, calculate the following: a) Change in sheet thickness, i.e. find At. Hint engineering and true strain are equal in the elastic regime. b) Sketch the shape of the circle after deformation on the figure below c) What is the elastic strain energy in the thickness direction only?