The STUDIA UNIVERSITATIS BABE┼×-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

 
       
         
    STUDIA PHYSICA - Issue no. 1 / 2014  
         
  Article:   NUMERICAL INVESTIGATIONS ON INFLUENCE OF DIE GEOMETRY AND RAM SPEED ON THE HOT EXTRUSION OF ALUMINIUM ALLOY.

Authors:  M. POP, A.V. POP.
 
       
         
  Abstract:  In the present work, an attempt was made to predict the force evolution during the extrusion of 7075 aluminium alloy by means of 3D FEM computer simulation. For this purpose the general F.E.A. software Forge-3D has been used to set up the finite element model of the hot aluminium extrusion. 7075 Aluminium was used as billet material, with 30 mm diameter and 30 mm length. The extrusion process was modeled as isothermal, which means that the billet material was preheated at a specific temperature and then it was pressured into the circular die, with different extrusion ratio. The extrusion speed was varied from 2 to 6 mm/s and also the extrusion die angles varied. The friction between work piece and die, concerns concerns Tresca model with 0.3 friction factor. The influence of die angle, reduction ratio, ram speed, die temperature on the extrusion force during the extrusion process were investigated. Results show that die angle, ram speed, die land diameter has a significant influence on the extrusion force evolution.

Keywords: FE-analysis, forward extrusion, aluminium alloy
 
         
     
         
         
      Back to previous page