A cylindrical work piece is subjected to a cold upset forging operation. The starting piece is 80 mm in height and 50mm in diameter. It is reduced in the operation to a height of 40 mm. The work material has a flow curve defined by K-300 MPa and n 0.2. Assume a coefficient of friction of 0.1, assume that strain 0.004, Determine the force as the process begins. at intermediate heights of 65mm, 55 mm, and at the final height of 40 mm.

A cylindrical work piece is subjected to a cold upset forging operation. The starting piece is 80 mm in height and 50mm in diameter. It is reduced in the operation to a height of 40 mm. The work material has a flow curve defined by K-300 MPa and n 0.2. Assume a coefficient of friction of 0.1, assume that strain 0.004, Determine the force as the process begins. at intermediate heights of 65mm, 55 mm, and at the final height of 40 mm.

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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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.

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