- Title
- Development and analysis of a friction stir spot welding process for aluminium
- Creator
- Stephen, Michael George
- Subject
- Friction welding
- Subject
- Electric welding
- Subject
- Aluminum alloys -- Welding
- Date Issued
- 2005
- Date
- 2005
- Type
- Thesis
- Type
- Masters
- Type
- MTech
- Identifier
- vital:9631
- Identifier
- http://hdl.handle.net/10948/1351
- Identifier
- Friction welding
- Identifier
- Electric welding
- Identifier
- Aluminum alloys -- Welding
- Description
- Friction Stir Spot Welding (FSSW) has been developed from the conventional Friction Stir Welding (FSW) process, developed at The Welding Institute (TWI). FSSWs have been done without the keyhole being eliminated. Elimination of the keyhole would result in the process being more commercially viable. This dissertation focuses on an attempt of eliminating the keyhole using a retractable pin tool as well as a comparison of the weld integrity of a FSSW to that of a conventional Resistance Spot Weld (RSW). Welds were conducted on aluminium alloy 6063 T4. Comparisons between different weld procedures were done. Further analysis of the weld integrity between FSSW and RSW were conducted, comparing tensile strengths, microstructure and hardness. For the above welding procedure to take place, the current retractable pin tool, patented by PE Technikon, was redesigned. Problems associated during the welding process and the results obtained are documented. Reasons for the keyhole not being eliminated as well as recommendations for future work in the attempt to remove the keyhole are discussed.
- Format
- xxv, 211 leaves : ill. (some col.) ; 30 cm
- Format
- Publisher
- Nelson Mandela Metropolitan University
- Publisher
- Faculty of Engineering, the Built Environment and Information Technology
- Language
- English
- Rights
- Nelson Mandela Metropolitan University
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