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Information × Registration Number 0222U002305, 0120U101973 , R & D reports Title Development and research of a new technological process for the manufacture of whole forged of stepped shels for reactor blocks of nuclear power plants. popup.stage_title Head Markov Oleg Ye., Доктор технічних наук Registration Date 11-02-2022 Organization Donbass State Engineering Academy popup.description2  Object of research technological processes and the tool for forging of step shells for power engineering. Methods: theoretical study of stress-strain state of metal carried out by finite element method; experimental verification of the reliability degree of determining stress-strain state was carried out based on the method of coordinate grids. The aime are increase of mechanical properties, decrease in expenses of metal and energy, quantity of welds at manufacturing of shells of reactors on the basis of use of new operations of forging of step forgings by the special tool. The shape formation of a hollow workpiece during of unrolling by a stepped deforming tool has been investigated. Quantitative estimates of the workpiece stress-strain state during the unrolling of shells in new ways, taking into account the hardening of the metal. A method for conducting experimental studies of the shape formation on lead models has been developed. A mathematical model has been developed to determine the dimensions of the original stepped workpiece. Field of application: forging, pressing, stamping, profiling, powder metallurgy. Product Description popup.authors Abhari Payman B. Aliiev Igramotdin S. Hrudkina Nataliya S. Karnaukh Sergii G. Markov Oleh Ye popup.nrat_date 2022-03-09 Close