EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 6, Problem 6.100P
To determine
The maximum die pressure.
The force required for forging.
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I need a step by step answer please :)
A solid piece of steel 60 mm in diameter
and 80 mm height is reduced in height by
50 percent with the help of open die
forging. The work material characteristics
are represented by k = 350MPA and n =
0.16. If coefficient of friction is 0.1, find the
%3D
maximum forging force.
I need a step by step answer please :)
Chapter 6 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
Ch. 6 - Prob. 6.1QCh. 6 - Prob. 6.2QCh. 6 - Prob. 6.3QCh. 6 - Prob. 6.4QCh. 6 - Prob. 6.5QCh. 6 - Prob. 6.6QCh. 6 - Prob. 6.7QCh. 6 - Prob. 6.8QCh. 6 - Prob. 6.9QCh. 6 - Prob. 6.10Q
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- A cylindrical ingot with D0 = 50 mm and h0 = 40 mm is cold forged using an open die.The final height is 20 mm. The coefficient of form / friction between the die and the workpiece isconsider Kf = 1.10.The material from which the ingot is made has the following characteristics:K = 600 MPa and η = 0.12.Determine the force (F) on the operation:a) Force required at the moment of reaching the yield point (ℇ = 0.002)b) Force required when you have a height of h = 30 mmc) Force required when there is a final height of h = 20 mmd) Construct the graphs: Force vs Δh and effort vs Δharrow_forwardA steel billet with a rectangular cross section is being forged using a die with a width of 84.5 mm. The billet has an original thickness of 46.0 mm and a width of 273 mm. The billet is upset to a thickness of 28.0 mm and the coefficient of friction for the workpiece-die interface is 0.234. Take the strength coefficient (K) as 526 MPa and the strain-hardening exponent (n) as 0.225. a) Determine the maximum die pressure (do not use average pressure formula). Expected answer: 1050 MPa b) Determine the required forging force (use average pressure). Expected answer: 16200000 Narrow_forwardWire is drawn through a draw die with entrance angle a= 17°. Starting diameter is 3.0 mm and final diameter = 2.4 mm. The coefficient of friction at the work-die interface = 0.08. The metal has a strength coefficient K = 205 MPa and a strain-hardening exponent n = draw force in this operation. Why are multiple passes usually required to achieve the desired reduction? (Hint: Observe the draw stress value found in this question) 0.20. Determine the draw stress and Lubricant box Initial wire stock (in coil form) Multiple pass/draft drawing Draw die V2, F V3, F shown in figure. Capstan drum (holds multiple loops of wire) (1) (2) (3)arrow_forward
- 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 pressurearrow_forwardA upset forging operation is performed in an open die. The initial size of the workpart is: Do = 63 mm, and ho = 100 mm. The part is upset to a diameter = 70 mm. The work metal has a flow curve with strength coefficient = 600 MPa and strain hardening exponent= 0.22. Coefficient of friction at the die-work interface = 0.40. Determine (a) final height of the part, and (b) maximum force in the operation.arrow_forward6.100 A 0.25-m-wide billet of 5052-O aluminum (K = 210 MPa, n = 0.13) is forged from a thickness of 30 mm to a thickness of 20 mm with a long die with a width of 75 mm. The coefficient of friction for the die/workpiece interface is 0.25. Calculate the maximum die pressure and required forging force.arrow_forward
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