matt1978
www.lorch.eu
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If thats the case then seems to me that MLT appearance and a strong weld are easily achievable on a Mig set with pulse feature? Maybe thats something I should try as MLT is certainly a good selling point.
When you say Pulse do you mean Pulse as in a artificial man made spray arc, or do you mean Pulsing the wire are in with a Stitch function on a conventional mig?
As Richard said, most higher end Pulse welders have Double Pulse and this can be used to offer a Tig like appearance to the seam. There should be no detriment to the "soundness" of the weld using this methods. If you run on a standard single pulse then it is also possible to create the "dime" effect but this must be done with a manual back weave, this requires more skill from the operator it offers no real world benefits on materials such as Steel or Stainless aside from cosmetic appearance. However the additional weld pool agitation caused from back weaving can actually improve porosity levels on aluminium.
In saying that, all of the above is a world away from MLT using conventional machines in dip transfer. I could see it being a negative if they are using parameters to suit the MLT effect rather than parameters to suit the material thickness, but if you was welding say two bits of 2mm plate together and that thickness already dictated that you would be in dip transfer then I don't personally see any great reduction in weld strength if "normally" welded or the MLT method. The issue comes from having abnormally low parameters to allow weld pool control at the cost of fusing properly the parent material. It all has to be thought of in context too, although this shouldn't be what anyone aims for, but even a bad weld would normally suffice regarding strength for many DIY/Hobby applications with the level of equipment most people have on this forum.