Abstract
The paper presents computer modelling results of researches on pushing through a conical die process of round bars. Calculations were carried out using the commercial code QFORM-2D, based on the Finite Element Method (FEM). Investigations involved the use of circular sectioned S355 (1.0577) steel segments of rods with diameter of 9 mm and conical dies with different diameter of sizing portion of a die (d = 7.1 mm; 7.6 mm and 8.0 mm). The aim of the paper is to compare distributions of effective strain and flow stress in longitudinal sections of round bars at different elongation factors (λ1 = 1.24, λ2 = 1.37 and λ3 = 1.57).
Highlights
Drawing, forging with the use of swaging machines and cross rolling are employed while manufacturing stepped parts or reducing the cross section of the shafts and round bars in industrial practice [1,2,3,4]
Where: A0 - cross sectional area of the billet A1 - cross sectional area of the material after deformation d0 - the diameter of the billet d1 - the diameter of segment of rods after deformation The paper presents computer modelling results of investigations on pushing through a conical die process of round bars made from S355 steel for different elongation factors
L - displacement of the punch l0 - length of the material before deformation Results of calculations (FEM) of pushing through a conical die process of steel round bars were validated against experimental data in terms of changes in forces for elongation factor λ2 = 1.37
Summary
Drawing, forging with the use of swaging machines and cross rolling are employed while manufacturing stepped parts or reducing the cross section of the shafts and round bars in industrial practice [1,2,3,4]. The most essential features of the WPM method, distinguishing it from other known methods, involve the use of two circular segments as tools and adoption of kinematics that allows one-directional rolling with a symmetrical system of forces relative to the axis of the rolled material. New manufacturing technologies of stepped parts are cross-wedge rolling and rolling-extrusion forming process [6]. In the process of rotary forcing, material is formed by means of three rotational tools. The charge is provided by means of a pusher pushing the billet in a working space between the profiled rolls [6]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
