Applying the finite-element method for determination of tool wear in conventional deep-drawing

Analysis of wear in deep-drawing process of a cylindrical cup

“…The two primary sources of tool wear in conventional deepdrawing are abrasive and adhesive wear mechanisms (Jensen et al, 1998). Abrasive wear is the result of scratching and micro-cutting of a surface by hard protuberances on the counter surface or by hard particles in the contact.…”

“…In conventional deep-drawing, tool wear is mainly concentrated over the draw-die profile (Oqvist, 2000;Christiansen and De Chiffre, 1997;Jensen et al, 1998;Hortig and Schmoeckel, 2001;Boher et al, 2005;Masen, 2004).…”

“…The normal force not only varies with position on the draw-die profile, but also varies with the process time; consequently the process time also has to be divided into intervals in which the normal force can be assumed constant (Jensen et al, 1998).…”

“…Furthermore, it was observed from three dimensional measurements that the progressive wear is initiated by ploughing after only a few drawings and is followed by a second stage during which ploughing and abrasive wear occur simultaneously. Jensen et al (1998) described an attempt to predict the tool wear distribution over the draw-die profile dealing with tool wear 0924-0136/$ -see front matter © 2007 Elsevier B.V. All rights reserved. doi:10.1016/j.jmatprotec.2007.08.076 as a time-and place-dependent problem using a quatitative semi-empirical wear model and incorporating LS-Dyna2D as a finite element software.…”

Statistical investigation of die wear in metal extrusion processes

“…2) [8][9][10]. These wear processes are initiated by the interfacial junctions that form in contact zones [9][10][11]. As a compressive load is applied, local pressures at the contact area become extremely high.…”