A strip with a width of 12 in. And 1 in. Thick is fed through a rolling mill with rolls of 10 in. Radius each. The work material thickness is reduced to 0.875 in in one step, at a speed of 50 rev / min. The work material has a creep curve defined by K = 40,000psi and n = 0.15, the coefficient of friction between the rollers and the work is assumed to be 0.12. Determine if the friction is sufficient to perform the rolling operation. If so, calculate the rolling force, torque, and horsepower.

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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.