wo high rolling mill setup has been used to reduce the thickness of a plate from 40 mm at the naximum draft per pass to become 34 mm after the last pass. The width of the rolled material is 60 mm and the roll diameter is 560 mm. The material has a strength coefficient of 260 MPa and a train hardening exponent of 0.18. The coefficient of friction during the process was 0.085. Determine the following: - Number of passes required to perform the reduction process = - Strain of the last pass =

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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.