Does it flow continuously? Iirc mine flows for a few seconds after trigger release. Nothing in the manual ( which we don't read ) to explain how it should behave?
Hello everyone, just recently bought a new R-tech mig 180 and supplied with it a r-tech mb15 might torch.
I'm in the process of setting up for welding some gates, but started welding a few bits of box section to make trestles. This is a brand new machine and mig gun, when I let go of the trigger the gas flow keeps going and I have to keep pressing the trigger numerous times for it to stop the gas coming out.
Any ideas of what the issue might be, I have emailed Rtech support but being the weekend I thought I'd try here aswell. Thank you
Hello everyone, just recently bought a new R-tech mig 180 and supplied with it a r-tech mb15 might torch.
I'm in the process of setting up for welding some gates, but started welding a few bits of box section to make trestles. This is a brand new machine and mig gun, when I let go of the trigger the gas flow keeps going and I have to keep pressing the trigger numerous times for it to stop the gas coming out.
Any ideas of what the issue might be, I have emailed Rtech support but being the weekend I thought I'd try here aswell. Thank you
Strange to hear a “professional“ welder advocating weavingI would use .8 wire and set your power to 8 and your wire feed to around 4 to begin with and work from there, you will find you need technique as much as settings as you will need to weave in much the same way you would with stick.
Increase your wire feed until it welds and fine tune using both power and wire feed settings as many swapping from stick to MIG assume they are still welding with stick and forget .8 wire is only 1/4 of the thickness of a 3.2 stick.
I'm no expert, though I've been doing it long enough to know what's right and wrong - but I just found it strange how you are advising something which most other people don't?Strange how a non professional welder suddenly becomes an expert.
I’m sorry but this is simply incorrect . In MIG mode there is not 1 knob that controls amps, that is only used in MMA (stick) mode on the Rtech 180.Reg, in basic terms;
Specifications for the R tech 180 are 25-180 amps and if you take the 25 amps from 180 amps it leaves 155 amps, divide this by 10 and each mark increases the amperage by 15.5 amps
Therefore, you have a minimum of 25 amps, if you set your indicator to 1 you have 25 amps + 15.5 amps or 40.5 amps.
Position 8 gives you 25 amps + 15.5 X 8 = 124 amps, so 25 amps + 124 amps = 149 amps of welding power.
If you put in 0.8mm wire of A18 grade its cross section area dictates the maximum current the wire can translate into welding power and for 0.8mm wire the maximum power it can usually handle is around the 170 amp mark and different wires may handle slightly more or slightly less power without dropping performance, for a 180 amp MIG of any type you won't even notice this.
Strange to hear a “professional“ welder advocating weaving
I’d start with running a straight bead first while getting the settings right. Weaving is something you occasionally might need to do but it’s not recommended for most jobs.
Yeah but it’s also not really right to say that the wire feed alone controls amps, if that’s what was meant. That’s only correct if you ignore the power dial, and the 2 work in conjunction.Weaving with MIG isn't a problem. You get away with small movements within the puddle, generally to control travel speed on the flat, and to manipulate the puddle uphill.
Big ol' fat weaves aren't reccommended whatever the process!
I assume . is getting at the fact that wirespeed is roughly proportional to amps, and is the primary variable. It's better to think in terms of wirespeed IMO, unless you get an average amps display on the machine.
Voltage controls the weld puddle and bead profile.
Yeah but it’s also not really right to say that the wire feed alone controls amps, if that’s what was meant. That’s only correct if you ignore the power dial, and the 2 work in conjunction.
You can’t just ignore one - the wire feed would only give 180 amps if the power dial was at max - and vice versa if the power dial was at min for example then you wouldn’t get 180 amps out.