This is what I found so far...
The You tube video below is from the Lincoln Electric affiliate of Germany, otherwise known as: "Lincoln Deutschland."
http://www.youtube.com/watch?v=1Y1NUl80_wgIf you notice towards the end of the video, there's a part that provides the various metals in which the STT process is compatible with and it does NOT include Aluminum.
Here's the STT arc in a video filmed in very slow motion:
http://www.youtube.com/watch?v=eaXBYkmZkaEThis is "Pulse on pulse." : This variant can produce almost TIG like appearance & quality welds on Aluminum sheet...
http://www.youtube.com/watch?v=cSAptEWQps4This is "Power mode." :
http://www.youtube.com/watch?v=NhGDLUnNbnsThis is "Rapid arc." :
http://www.youtube.com/watch?v=tRu2Fxv5bUASTT Explained - Part 1
http://www.youtube.com/watch?v=3TzQRLtyRmMSTT Explained - Part 2
http://www.youtube.com/watch?v=-07DNYhKNY8This is "Fronius CMT" which stands for Cold Metal Transfer...
http://www.youtube.com/watch?v=sWegk_10S3sFronius: Weldstart compare CMT versus Conventional short circuit transfer:
http://www.youtube.com/watch?v=GIyMlkUtaakThis is what CMT can do! I know it's been around since 1999 but, this is truly impressive automotive design wise
:
http://www.youtube.com/watch?v=B80IWBpjvQcFronius: CMT Application Stove Pipe :
http://www.youtube.com/watch?v=8GyrdSMciLkFronius: CMT Advanced:
http://www.youtube.com/watch?v=_WrhWf9XLHMFronius: Cold Metal Transfer spatter free welding
http://www.youtube.com/watch?v=bXBMJmi_2Z0ESAB Swift Arc Transfer (SATâ„¢)
http://www.youtube.com/watch?v=MTzXevAOJHMThis machine is specifically designed for Aluminum by Miller... Btw, it's NOT RMD and is probably the least expensive of the systems covered in this post!
:
http://www.youtube.com/watch?v=ZlSbfq9OqokNew Advances in Pipe Welding - RMD & Pro Pulse GMAW "RMD" = Regulated Metal Deposition
http://www.youtube.com/watch?v=_mD52BWLfloMiller Pulsed/Multi-MIG Welding Options - Pulsed processes covering Accu-Pulse, Accu-Speed, Pulsed MIG, RMD, etc.
http://www.youtube.com/watch?v=WTiCxszwW4INow that I have as a bonus, given you a comparison of the processes similar to STT, based on what Lincoln states - STT was not designed for aluminum welding of pipe....
There are a variety of processes and equipment listed above that's better suited for Aluminum as is standard GMAW Spray transfer which is easier on the bottom line.
Respectfully,
Henry