Open AccessIndirect extraction of bar stocks in viscous flow mode
Author(s) -
А. А. Пасынков,
С. Н. Ларин,
В. Н. Чудин
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1546/1/012066
Subject(s) - extrusion , materials science , viscoplasticity , mechanics , isothermal process , die (integrated circuit) , strain rate , strain hardening exponent , composite material , metallurgy , structural engineering , finite element method , thermodynamics , engineering , constitutive equation , physics , nanotechnology
The process of isothermal indirect extrusion is considered under conditions of viscoplastic metal flow, which provides the forming of high-strength nonferrous alloys. We believe that stamping is performed under conditions of strain hardening and fracture of the processed material. The deformation kinematics was established based on discontinuous path velocity fields. An expression is obtained for estimating the specific pressure during backward extrusion based on the upper boundary method. Dependencies were obtained showing the influence of the relative value of the tool stroke, reduction during extrusion, friction between the tool and the workpiece, the strain rate on the specific pressure during extrusion. The results can be used to assess the influence of technological parameters on the course of the operation.