Increased productivity in hot aluminum extrusion by using extrusion dies with inner cooling channels manufactured by rapid tooling

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Authors

The influence of local inner die cooling on the heat balance in hot aluminum extrusion was investigated. For the manufacturing of the die with cooling channels close to the forming zone, the layer-laminated manufacturing method was applied. The new tooling technology was applied in order to decrease the profile's exit temperature and to avoid thermally induced surface defects with the aim to raise the productivity in hot aluminum extrusion processes. Numerical and experimental investigations revealed that, while maintaining the exit temperature of the extrudate, a distinct increase of the production speed up to 300 % can be realized, while the extrusion force increases only slightly. An effect on the profiles microstructure was also detected. By applying die cooling, grain coarsening can be significantly limited or even be avoided.

Original languageEnglish
Title of host publicationMaterial Forming ESAFORM 2014 : 17th Conference of the European Scientific Association on Material Forming
EditorsJari Larkiola
Number of pages8
Volume611-612
PublisherTrans Tech Publications
Publication date2014
Pages981-988
ISBN (print)9783038351061
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event 17th European Scientific Association on Material Forming - ESAFORM 2014 - Dipoli Congress Center , Espoo, Finland
Duration: 07.05.201409.05.2014
Conference number: 17

    Research areas

  • Die cooling, Hot aluminum extrusion, Productivity, Rapid tooling
  • Engineering

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