Influence of setting parameters on tool durability for refill friction stir spot welding (RFSSW) process
- Montag T. ,
- Wulfsberg J.P. ,
- Hameister H. ,
- et al
- Montag T. ,
- Wulfsberg J.P. ,
- Hameister H. and
- Marschner R.
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A Taguchi design of experiments approach was employed to investigate the effect of varying process parameters (rotational speed, welding time and plunge depth) on process data for refill friction stir spot welding of AA 6082-T6 aluminium alloys. The test plan incorporated the three parameters at three factor levels to give ranges of rotational speed (1300-2700 rpm), welding time (2.4-4.8 s) and plunge depth (1.9-2.3 mm). Three key indicators were derived that relate to the required torque and forces: mean value of main spindle current for the welding phase, maximum value of the main spindle current for the acceleration phase and mean value of the sleeve current for the plunging phase. Best fit setting parameter configurations were determined and a condition monitoring approach was enhanced by the maximum spindle current indicator to show significant changes for a worn out tool.
10th International Symposium, 20-22 May 2014, Session 6A: FSSW II, Paper 02
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