Pulsing Tig

[Burf86]

Does pulse welding actually create a better weld, or does it just make welding easier?

 

[Ragnarok]

it's different, it concentrates the heat and lowers the total heat input, also good for outside corners and things like that, except on outside corners and things i'd say it makes it harder to do though, at least on wide pulses like 1 per second you have to stick the the pace of the pulse, much easier to mess things up! with micro pulse it's very similar to welding with out pulse but with a more focused arc, i dunno if you weld aluminium? but if you do micro pulse is quite a lot like the difference between running 50hz ac frequency and 100+hz

 

[hotrodder]

Pulse can improve weld microstructure, it's not something that most of us here would ever be able to quantify but there's various headache inducing papers out there discussing grain refinement (better ductility and toughness, less sensitivity to solidification cracking) and things like resistance to pitting corrosion. For anyone wanting a headache google terms like 'pulsed weld equiaxed grains' or 'pulsed weld grain refinement'

 

[tommy dunlop]

hi hope this helps
http://www.youtube.com/watch?v=y5di20Mtlpk