Hi all
Shop I'm in is 100% dip-transfer and weaving. Everything matches, including torches. Common in UK. Torches rated "300A", but that's a
reluctant 300A and you spent a lot of time coaxing it to work at all.
Frustratingly, can't "naturally" and cleanly get an 8mm (5/16th-inch)
leg-length fillet, which is often specified for work done in this
shop.
Unlikely to be able to change off Ar-20%CO2-2%O2 (get a messy globular transfer, unless on high thickness where very high voltage can drive smooth-ish spray transfer). At least for moment. Say go to 15%CO2 "compromise" or specially for me Ar-5%CO2 for spray only - maybe in future.
However, if could persuade shop to give me a bigger torch...
How good is the "Tweco Spray Master 450 Air Cooled MIG Gun"?
I kitted out another shop a few years ago with high-capacity air-cooled Binzels and changed them to Ar-15%CO2-2%O2 and they loved them and the resulting welding. Changes at the machine passed through in exact proportion to the welds and you could "tune" things, where under-capacity torches "muddied" everything and made cause-and-effect loose and uncontrollable and everything hard work just to get it done at all.
Basically, if I promise that getting one of these torches will do wonders, including "natural" 8mm (5/16th-inch) fillets (machine is rated to 450A), I want to know I'm promising the right thing...
Regards, Rich
Shop I'm in is 100% dip-transfer and weaving. Everything matches, including torches. Common in UK. Torches rated "300A", but that's a
Unlikely to be able to change off Ar-20%CO2-2%O2 (get a messy globular transfer, unless on high thickness where very high voltage can drive smooth-ish spray transfer). At least for moment. Say go to 15%CO2 "compromise" or specially for me Ar-5%CO2 for spray only - maybe in future.
However, if could persuade shop to give me a bigger torch...
How good is the "Tweco Spray Master 450 Air Cooled MIG Gun"?
I kitted out another shop a few years ago with high-capacity air-cooled Binzels and changed them to Ar-15%CO2-2%O2 and they loved them and the resulting welding. Changes at the machine passed through in exact proportion to the welds and you could "tune" things, where under-capacity torches "muddied" everything and made cause-and-effect loose and uncontrollable and everything hard work just to get it done at all.
Basically, if I promise that getting one of these torches will do wonders, including "natural" 8mm (5/16th-inch) fillets (machine is rated to 450A), I want to know I'm promising the right thing...
Regards, Rich