Actual Problems in Machine Building 2017 Vol. 4 No. 2

Actual Problems in Machine Building. Vol. 4. N 2. 2017 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 34 PERSPECTIVE TECHNOLOGY FOR PRODUCING HOLLOW RAILWAY AXLES BASED ON SCREW ROLLING Romanenko V.P. 1 , Ph.D. (Engineering), Professor, e-mail: romanenko-misis@yandex.ru Manko A.I. 2 , Ph.D. (Engineering), Head of R & D and military equipment bureau, e-mail: manko_ai@mz.perm.ru Stepanov P.P. 3 , Ph.D. (Engineering), Director of Research and Development Center, e-mail: Stepanov_PP@vsw.ru Perminova O.V. 2 , Head of metal forming bureau, e-mail: perminova_ov@mz.perm.ru Kriskovich S.M. 1 , Post-graduate Student, e-mail: serg.kriskovich@gmail.com 1 The National University of Science and Technology MISiS, 4 Leninsky Prospekt, 119049, Moscow, Russian Federation 2 Public Joint-Stock Company for Special Mechanical Engineering and Metallurgy Motovilikha Plants (PJSC Motovilikha Plants), 35, 1905 goda str., 614014, Perm, Russian Federation 3 JSC “Vyksa Steel Works”, 45 Bratiev Batashevykh Str., 607060, Vyksa, Nizhny Novgorod region, Russian Federation Abstract The paper considers the issue of the production of hollow axles for railway transport; it adduces the advantages of such axes in comparison to solid axles. The article describes the elaborating technology of manufacturing the hollow axes on the basis of the screw rolling and radial forging operations with the main stages of production. There also presented the results of experimental axes manufacturing at PJSC “Motovilikha Plants” from the hollow blanks obtained by the method screw rolling at JSC “Vyksa Steel Works”. There were conducted the mechanical tests of samples for tensile and impact strength. The comparative results of mechanical tests with the existing requirements for solid axles are presented. Keywords Hollow railway axle, screw rolling, piercing, radial forging, axial load, heavy-gauge tube