A hot rolling mill has rolls of radius = 105mm. It can exert a maximum force =1219625 Newton. The mill has a maximum horsepower = 91 hp. It is desired to reduce a 25 mm thick plate by the maximum possible draft in one pass. The starting plate is 250 mm wide. In the heated condition, the work material has a strength coefficient = 275 MPa and a strain hardening exponent = zero. Determine

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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.