Premium
Metal flow in bearing section during extrusion process of L, C and T sections
Author(s) -
Kiuchi Manabu,
Yanagimoto Jun,
Mendoza Victor
Publication year - 1998
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199801469
Subject(s) - extrusion , die (integrated circuit) , bearing (navigation) , materials science , flow (mathematics) , tearing , metal forming , cross section (physics) , finite element method , bending , section (typography) , position (finance) , material flow , mechanical engineering , composite material , engineering drawing , metallurgy , structural engineering , mechanics , engineering , physics , computer science , ecology , finance , quantum mechanics , astronomy , economics , biology , operating system
Conventionally, various metal sections are extruded using flat‐faced dies. This results in metal flow‐related defects such as bending, twisting, tearing and thinning. As a result, time consuming and expensive post‐extrusion operations are needed to obtain acceptable dimensional quality of the product. This paper describes the application of a newly developed rigid‐plastic FEM code to the extrusion of sections and shows the results of metal flow simulation. The results are used for predicting the geometric defects and reducing them through modification of the bearing land and the position of die opening. This procedure is applied to the extrusion of L, C and T sections and the influence on the metal flow of some variables like friction coefficient, aspect ratio of product's cross‐section, bearing land length and position of die opening is studied. The results are presented making emphasis on the study of the axial velocity distribution in the bearing land.