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Title: Improving the quality of productivity of the aluminium extrusion process
Author: Saker, I. J.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1994
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The objectives of this project were to establish some fundamental principles on which an improvement in the quality and productivity of the aluminium extrusion process could be based. The work focused on the role of heat transfer in preparation of the billet and its subsequent cooling. In both of these applications, enhanced heat transfer was achieved using approaches based on impingement jet technology. There are two main areas. The first is the development of a swirl burner furnace system which could be used to produce a taper heat profile in the billet and the second, the use of impingement cooling of the extrusion in an annular geometry. It was first necessry to establish the temperature of the extrusion. This required the development of a radiation thermometer for non contact measurement of the extrusion at the press head. The experimental investigations confirmed the prediction of the temperature rise during the extrusion process. A novel impingement heating system was developed to provide taper heating to the billet, thus potentially improving the quality and productivity of the extrusion press. Finally, the extrusion is required to be cooled in a controlled manner, in order to preserve the metallurgical properties of the aluminium and to prevent deformation. To achieve this, a jet impingement cooling system was studied both theoretically and experimentally with the aim to provide data for the design of such systems.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available