Analysis of plunge and dwell parameters of robotic FSW using TWT temperature feedback control
- Silva A.C.F. ,
- De Backer J. and
- Bolmsjo G.
- Silva A.C.F. ,
- De Backer J. and
- Bolmsjo G.
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The tool workpiece thermocouple (TWT) temperature measurement method was applied for optimisation of the initial welding phases (plunge and dwell) in conventional FSW (friction stir welding) and FSSW (friction stir spot welding), and an analysis of the process parameters was undertaken by using feedback control in order to facilitate enhanced control of the initial welding phases through temperature feedback. Bead on plate welding experiments were conducted on AA 6082-T6 aluminium alloy sheets (thickness 3 mm) using an ESAB Rosio robot equipped with force feedback control. The parameters studied were plunge force (3-8 kN), plunge rotational speed (1000-1800 rpm) and the weld start set temperature. The influence of the plunge parameters on weld temperature and phase duration was studied for the purpose of process optimisation with respect to robustness, time, robot deflection and quality.
11th International Symposium, 17-19 May 2016, Session 6A: Process Control, Paper 02
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