Wilson’s hydrodynamic model of the hydrostatic extrusion process is extended to meet the geometry found on residual billets. The transition from inlet to work zone of the process is not considered sharp as in the model of Wilson but as a rounded edge, modelled by a parabolic function. It is shown that this rounded edge has a considerable influence on the predicted film thickness. Furthermore, it is shown that for hydrostatic extrusion of magnesium with castor oil as pressure medium, it is not possible to generate full film lubrication in the work zone of the hydrostatic extrusion process.
|Title of host publication||Putting tribology to work: proceedings 7th International Tribology Conference, Austrib 2006|
|Subtitle of host publication||December 3-6, Rydges south bank, Brisbane, Queensland, Australia|
|Place of Publication||Barton|
|Publisher||Institution of Engineers (Australia)|
|Number of pages||6|
|Publication status||Published - 3 Dec 2006|
|Event||7th International Tribology Conference in Australia, AUSTRIB 2006 - Brisbane, Australia|
Duration: 3 Dec 2006 → 6 Dec 2006
Conference number: 7
|Conference||7th International Tribology Conference in Australia, AUSTRIB 2006|
|Period||3/12/06 → 6/12/06|
Moodij, E., de Rooij, M. B., & Schipper, D. J. (2006). Hydrodynamic modelling of hydrostatic magnesium extrusion. In D. Hargreaves (Ed.), Putting tribology to work: proceedings 7th International Tribology Conference, Austrib 2006: December 3-6, Rydges south bank, Brisbane, Queensland, Australia Barton: Institution of Engineers (Australia).