Please well explained with answers, not just formulas. Two cold roughing (thickness reduction) operations are performed on a 25 in. wide, 6 ft. long plate of annealed AISI 1112 steel; The original thickness is 1.6 in. and is intended to be reduced inside a reversible mill to 1.1in. thick in two stages, each of the same value. The work rolls are 18 in. in diameter. n = 0.19, K = 760 Mpa, RPM = 250 What is the coefficient of friction required to perform this work? What is the power required for the second roughing performed? Estimate the yield stress of the 1.1 in material.

Please well explained with answers, not just formulas. Two cold roughing (thickness reduction) operations are performed on a 25 in. wide, 6 ft. long plate of annealed AISI 1112 steel; The original thickness is 1.6 in. and is intended to be reduced inside a reversible mill to 1.1in. thick in two stages, each of the same value. The work rolls are 18 in. in diameter. n = 0.19, K = 760 Mpa, RPM = 250 What is the coefficient of friction required to perform this work? What is the power required for the second roughing performed? Estimate the yield stress of the 1.1 in material.

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.

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Do not give answer in image and hand writing

Please well explained with answers, not just formulas. Two cold roughing (thickness reduction)
operations are performed on a 25 in. wide, 6 ft. long plate of annealed AISI 1112 steel; The
original thickness is 1.6 in. and is intended to be reduced inside a reversible mill to 1.1in. thick in
two stages, each of the same value. The work rolls are 18 in. in diameter. n = 0.19, K = 760 Mpa,
RPM = 250 What is the coefficient of friction required to perform this work? What is the power
required for the second roughing performed? Estimate the yield stress of the 1.1 in material.

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Step 2: Calculate the coefficient of friction:

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Step 3: Calculate the roll strip length, true strain and average true stress:

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Step 4: Calculate the power required for the 2nd rolling:

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