A force that acts on the punch during fine-blanking of parts to be used in turbochargers for automotive diesel engines was measured. The aim of the research was to define the time dependence of the ...force and vertical movement of the punch at the same time. Furthermore, the influences of different heat treatment procedures on mechanical properties of Inconel 718 alloy that are reflected in the loading on the tool were investigated. The temperature of solution annealing affects the amount of Ž phase which is present in the nickel matrix and the mechanical properties of Inconel 718. Mechanical and microstructure properties of sheet metal have an influence on the force in fine-blanking. A line graph of force can be divided into two parts. First withelastic deformation of sheet metal, and the second when the plastic deformation of sheet metal begins and continues until the punch cuts through the entire thickness.
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