Ejection force analysis of sintered aluminium micro gears using a shrink-fit die principle

Emanuele Cannella, Emil Krabbe Nielsen, Mogens Arentoft

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

405 Downloads (Pure)


This project aims at developing and designing a new die-system capable of reducing the ejection force after in-die compacting and sintering, similar to the functional principle of a Micro-FAST sintering process. The system is based on the shrink-fit principle from cold forging; thus, the die is in a pre-stress condition during sintering. The experimental phase has involved the production of aluminium micro gears either with or without the shrink-fit application. The resulting ejection forces have been compared, showing a reduction with the shrink-fit application.In addition, the influence of several elements on the ejection force has been analysed, such as pressure, time,temperature, and lubrication.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Multi-Material Micro Manufacture (4M2016) : co-organised with 10th International Workshop on Microfactories (IWMF2016)
Publisher4M Association
Publication date2016
ISBN (Print)978-981-11-0749-8
Publication statusPublished - 2016
Externally publishedYes
Event4M/IWMF 2016 Conference - Technical University of Copenhagen, Kgs. Lyngby, Denmark
Duration: 13 Sept 201615 Sept 2016


Conference4M/IWMF 2016 Conference
LocationTechnical University of Copenhagen
CityKgs. Lyngby
Internet address


  • Sintering
  • Micro-FAST
  • Pre-stress
  • Die-design
  • Friction
  • Ejection


Dive into the research topics of 'Ejection force analysis of sintered aluminium micro gears using a shrink-fit die principle'. Together they form a unique fingerprint.

Cite this