jamesmartin
Well-Known Member
weld will have oxides on the surface you should wire brush them after
Mark151151
Active Member
Thanks, is that wire brush before painting or straight after?
Mark
Mark
jamesmartin
Well-Known Member
clean straight after weld
Mark151151
Active Member
Cool thanks. Im a Bit late now seeing I welded it on Sunday but ill remember next time haha.
Mark
Mark
welds rust first........... most steel has a scale or finish on it from being shaped/worked from a ingot. when you welded it it was ground/prepped to clean/bare steel cooling down from welding to the current air temp will collect some moisture. Like your car windows do as a example
tombardier
Well-Known Member
Are you sure it's rust and not just the brown coating you get when the gas shield has been blown off course a bit (or when the gas isn't flowing fast enough)?
Mark151151
Active Member
I'm pretty new to mig welding so I'm Not sure but I am running out of gas so it sounds like that could be what it is, are you meant to run a tank until its completely empty?
Cheers mark
yes
Mark151151
Active Member
No probs. I really need to fit my new regulator then so I can adjust flow rate and monitor tank pressure. Currently it's only a single guage. Think there's only about 5 bar left.
Mark151151
Active Member
This is the one I just got Refillable Gas Cylinder Conversion Kit - Argon Mix - Weldequip
Iv only got a Clarke 160tm. It's the cheapest decent welder if that makes sense. All I could afford at the time and should be more than capable of welding anything I need to.
Iv only got a Clarke 160tm. It's the cheapest decent welder if that makes sense. All I could afford at the time and should be more than capable of welding anything I need to.
basically the same right gauge is tank pressure and left is working flow rate
practice is the name of the game as with any skill/trade. read a good instruction manual and look a you tube clips lots of good ones out there
Mark151151
Active Member
Ye I will do. I have a few friends who are welders so they're never far away. A lot of any trade comes down to practise. The more you do it the better you get.
Cheers.
Cheers.
Mr Noisy
Coming in your ears.
I just do my gas by listening to the nozzle 
Often you need less gas than you think, if it spits a bit when you crank it up then you need more.
Obviously too much is no problem but then you've got wastage.
Eveidently wasn't an issue on your diff cover job anyway, but yeah flow meters are the one cos you can remember what flow for what amps etc
Often you need less gas than you think, if it spits a bit when you crank it up then you need more.
Obviously too much is no problem but then you've got wastage.
Eveidently wasn't an issue on your diff cover job anyway, but yeah flow meters are the one cos you can remember what flow for what amps etc
