Newest developments on the manufacture of helical profiles by hot extrusion

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

A new innovative direct extrusion process, helical profile extrusion (HPE) is presented, which increases the flexibility of aluminum profile manufacturing processes. The application fields of such profiles can be seen in screw rotors for compressors and pumps. The investigations concentrate on experimental and numerical analyses by 3D-FEM simulations to analyze the influence of friction and the material flow on the twisting angle and contour accuracy. By means of finite-element method (FEM), the profile shape could be improved by modifying the die design. The numerical results were validated by experiments. For these investigations, a common aluminum alloy AA6060 was used. Mainly, the friction in the die influences the twist angle and the shape of the helical profile. Two die coatings were analyzed, but the friction was not substantially decreased in any of these cases. Although there is no efficient practical solution for reducing the friction in extrusion dies using tested die coatings, the required profile contour could be achieved by new die designing and by modifying the material flow. However, increasing the twist angle is limited due to geometrical aspects of this technology, namely, by the ratio of the volume to the contact area with the die for the displaced metal.

Original languageEnglish
Article number061010
JournalJournal of Manufacturing Science and Engineering
Volume133
Issue number6
Number of pages8
ISSN1087-1357
DOIs
Publication statusPublished - 12.2011
Externally publishedYes

    Research areas

  • Engineering
  • aluminium alloys, aluminium manufacture, compressors, extrusion, finite element analysis, friction, pumps, rotors

DOI

Recently viewed

Publications

  1. Communication under the microscope: The theory and practice of microanalysis
  2. Regional differences in soil pH niche among dry grassland plants in Eurasia
  3. Pestizidrückstände in ländlichen und urbanen Grund- und Oberflächengewässern
  4. Interlanguage pragmatics: From use to acquisition to second language pedagogy
  5. Institutional ownership and firm performance in the global shipping industry
  6. Entwicklung eines Regelungskonzepts für ein Ressourcenschutzrecht des Bundes
  7. Visiting the Colección Poyón, or Indigeneity and the Nation-State in Guatemala
  8. Irreversibility, ignorance, and the intergenerational equity-efficieny trade-off
  9. Potentiale und Herausforderungen einer empirischen Subjektivierungsforschung
  10. Bioconversion of renewable feedstocks and agri-food residues into lactic acid
  11. Conserving the World's Finest Grassland Amidst Ambitious National Development
  12. Deposition, Verteilung sowie Bedeutung für den Menschen und sein Nahrungsnetz
  13. On the economics of electrical storage for variable renewable energy sources
  14. Book Review: Political Entrepreneurs: The Rise of Challenger Parties in Europe
  15. Digital Gazelles: Challenges of Digital Startups during Phases of High Growth
  16. Governance of Labor Standards in Australian and German Garment Supply Chains
  17. »Die dampfenden Hälse der Pferde im Turm von Babel« und »Märchen auf Bestellung«
  18. Arkitektur og politik: Atmosfæriske refleksioner ud fra Böhme og Sloterdijk
  19. Vertrag über die Europäische Union (EUV) : Artikel 13 [Grundsätze und Leitlinien]
  20. Vertrag zur Gründung der Europäischen Gemeinschaft (EGV) : Artikel 23 [Zollunion]
  21. Berufliche Bildung Sozialpädagogik - Eine Spurensuche didaktischer Prinzipien
  22. Bildungsgerechtigkeit aus anthropologischer und begabungstheoretischer Sicht
  23. Wer? Wie? Was? Analyse didaktischer Materialien für Popmusik in der Grundschule
  24. An empirical note on commuting distance and sleep during workweek and weekend
  25. Steady-State-Modelle als Grundlage von Betrieblichen Umweltinformationssystemen
  26. Perspectives of academic staff on artificial intelligence in higher education
  27. Detecting Various Road Damage Types in Global Countries Utilizing Faster R-CNN
  28. Supply-side and demand-side cost sharing in deregulated social health insurance