Reason for saying "in UK" is there's an orthodoxy which means it's
difficult to get other than Ar/20%CO2.
So for the rest of the world this "wow!" moment would come as a
I worked at a highly-skilled high-specification place and they did
Can get clearly formed spray transfer.
Do not get "cannonball" spatters.
Delight to use
(eg. with Ar/20%CO2, for the time spent welding, you often spend half
as much time again chipping off spatter - even have an air power tool
to to it it's such a common matter)
Is Ar/12%CO2 better still?
Problem we'd have here is most weld qualification with "M21" gas - so
Ar/15%CO2 good, but Ar/12%CO2 is in category "M20" and would need new
WPQR and WPS.
If all dip-transfer MIG/GMAW is positional eg. v-up, or low thickness
(eg. butt/girth welding RHS's together), is Ar/12%CO2 even better?
Spray transfer - even clearer defined? Or same as with 15%CO2?
"bite" with dip-transfer still good for positional?
1 year ago