Another grading bucket

[MichaelV]

Just an observation on the role of shielding gas composition. I have found that for a given WFS and voltage tap setting, it's rather easier to get a fully established spray transfer when using a leaner gas; i.e. with a lower CO2 content. For instance, when using Argoshield Light, and 1.0 mm wire, I have consistently got a very smooth, very hot spray, albeit the puddle is a little too fluid for my liking/skill level. When using Aroshield Heavy, all other setting remaining the same, you find yourself a wee bit lower down in the spray transfer region. There is also a corresponding impact on the current.

Check it out the next time you have a clamp meter in action.

I'm sure TechnicAl and Matt1978 will elaborate.

Michael

 

[Kent]

Two welding Supplies and service agents and one manufacturer told me exactly this
240 amp from 240 v supply max no matter what people and manufacturers say
I asked tec arc who make the Oxford to explain how they can claim more but never got a reply
Interesting they make what is I think the biggest single phase mma plant 250 max
Though I think they offer a mig over 400 amp.
Perhaps someone of welding plant production on here might explain fully?

 

[Kent]

Just an observation on the role of shielding gas composition. I have found that for a given WFS and voltage tap setting, it's rather easier to get a fully established spray transfer when using a leaner gas; i.e. with a lower CO2 content. For instance, when using Argoshield Light, and 1.0 mm wire, I have consistently got a very smooth, very hot spray, albeit the puddle is a little too fluid for my liking/skill level. When using Aroshield Heavy, all other setting remaining the same, you find yourself a wee bit lower down in the spray transfer region. There is also a corresponding impact on the current.

Check it out the next time you have a clamp meter in action.

I'm sure TechnicAl and Matt1978 will elaborate.

Michael

Co2 is also used to cheat a bit more out of an undersized mig on a job
I am pretty sure boc still offer it. It's what we all used when I started there was no argoshield

 

[NickyEng]

Just an observation on the role of shielding gas composition. I have found that for a given WFS and voltage tap setting, it's rather easier to get a fully established spray transfer when using a leaner gas; i.e. with a lower CO2 content. For instance, when using Argoshield Light, and 1.0 mm wire, I have consistently got a very smooth, very hot spray, albeit the puddle is a little too fluid for my liking/skill level. When using Aroshield Heavy, all other setting remaining the same, you find yourself a wee bit lower down in the spray transfer region. There is also a corresponding impact on the current.

Check it out the next time you have a clamp meter in action.

I'm sure TechnicAl and Matt1978 will elaborate.

Michael

A function of co2 is to add energy to the weld hence 20% in argoshield heavy and 5% in argoshield light so effectively a hotter weld so like Kent says you can squeeze a little more out the machine

 

[DecK]

I have pulled either 329 or 339 amps running 1.2mm in spray. Was only looking to see what it was capable of really and that's the reading that was on the read out. Didn't run it for too long either. That's on a single phase supply with I think a 45amp breaker. Powcon 400SM power source with an LN25 feeder.

 

[daleyd]

On heating circuits we used to pull up to 1000 Amps from a single phase (transformed down from 440v to low voltage/high current) so I don't see why given a good supply why you couldn't get more than 240 amps on a single phase supply given a mig will be operating at ~ 20 Volts. If the machines couldn't do it I wouldn't see the likes of Miller making things up for themselves of it.

 

[tinman123]

If it's single phase you won't get 300 amp
Anything at the hot end no matter what the plant says

i have the oxford one here, she is set to a max of 350A on single phase.
now i have no real way of measuring what amps its actually got at the tip but i know its a long way ahead of the old italian made clarke 250A mig i have here, in fairness to the 250 it wasnt a bad welder to start out with back then but the oxford would eat it for breakfast with weld power at the tip.

there is also the bit where my 250 isnt actually that in the first place and my 350 is actually a 240 but from using 3ph mig's an odd time as well it has fair power for a single phase machine.
altho mig in my opinion isnt really right unless your using it on a 3ph supply, it just runs sweeter, or maybe im imagining that.

 

[Kent]

i have the oxford one here, she is set to a max of 350A on single phase.
now i have no real way of measuring what amps its actually got at the tip but i know its a long way ahead of the old italian made clarke 250A mig i have here, in fairness to the 250 it wasnt a bad welder to start out with back then but the oxford would eat it for breakfast with weld power at the tip.

there is also the bit where my 250 isnt actually that in the first place and my 350 is actually a 240 but from using 3ph mig's an odd time as well it has fair power for a single phase machine.
altho mig in my opinion isnt really right unless your using it on a 3ph supply, it just runs sweeter, or maybe im imagining that.

Hey like I say a whole lotta lies both ends
I think the most famous were the old 180 esab for producing more

 

[F.J.]

Lovely job, how big is the curting edge, 25-30mm and what size wire are you running from the machine? Im impressed with what its done, i was looking at one a while back but didnt actualy think it would be up to it

 

[NickyEng]

What was your longest weld run distance wise at 29.5v 280A mark David as a matter of interest?

I managed 28v a steady 225A yesterday on the Oerlikon Citomig 200mp David. I noticed the oerlikon has an IMAX limit alarm which activates at 240A if you run more than 2 seconds at that amperage so can't manage the 280 mate. Tried And alarm sounded.
I have got the Warriors and the Xmt 350 for full blast stuff Anyway.
I am about to get the latest version of the Warrior which is 350A single phase. Need a 45A supply to open it up tho

 

[Davidcardiff]

Lovely job, how big is the curting edge, 25-30mm and what size wire are you running from the machine? Im impressed with what its done, i was looking at one a while back but didnt actualy think it would be up to it

25mm cutting edge
Running 1.0mm wire and argoshield heavy
It's a great machine but if I was at that Craic day in day out I'd be looking at a xmt 304/350 with a separate wire feeder

 

[NickyEng]

25mm cutting edge
Running 1.0mm wire and argoshield heavy
It's a great machine but if I was at that Craic day in day out I'd be looking at a xmt 304/350 with a separate wire feeder

The XMT 350 is brilliant and I have the 8VS Extreme feeder which is superb too

 

[Davidcardiff]

The XMT 350 is brilliant and I have the 8VS Extreme feeder which is superb too

Serious machine
Have used one quite a bit and the mpa version too

 

[tinman123]

The XMT 350 is brilliant and I have the 8VS Extreme feeder which is superb too

if you dont mine me asking, and im not wanting to derail the op's thread either but when you mentioned the 350 i thought id ask.
i happen to have a xmt 350 cc/cv here.
now before i go any further ill say im no expert welder compared to what i see on this forum, but id be handy with the welders all the same, loads of room to improve however as setting up the miller welders is challenging.

what i wanted to ask you was,
i have a secondhand murex wire feed unit off what would of been a 3-400 a welder originally, could it be wired up to run off the 350?
in its simplest form id say it can but could i have as many of the functions thats on it already still working when i do.
id need to look at the panel on the front of it to see what functions are actually on it but i know there is some, ill look at it tomorrow to remind me.

all i really use the 350 for at the moment is for arc gouging.

 

[NickyEng]

if you dont mine me asking, and im not wanting to derail the op's thread either but when you mentioned the 350 i thought id ask.
i happen to have a xmt 350 cc/cv here.
now before i go any further ill say im no expert welder compared to what i see on this forum, but id be handy with the welders all the same, loads of room to improve however as setting up the miller welders is challenging.

what i wanted to ask you was,
i have a secondhand murex wire feed unit off what would of been a 3-400 a welder originally, could it be wired up to run off the 350?
in its simplest form id say it can but could i have as many of the functions thats on it already still working when i do.
id need to look at the panel on the front of it to see what functions are actually on it but i know there is some, ill look at it tomorrow to remind me.

all i really use the 350 for at the moment is for arc gouging.

Technically it would be possible If the wire feeder was cc compatible but it will be a bit of work to wire up the control circuitry to the 14 pin plug. You can get a diagram of the Xmt wiring in the manual.
We really need more info on the actual wire feeder to know if it's cc compatible

 

[NickyEng]

Serious machine
Have used one quite a bit and the mpa version too

Yep it's some tool, I have the Optima pulse control and wireless tig pedal too

 

[tinman123]

Technically it would be possible If the wire feeder was cc compatible but it will be a bit of work to wire up the control circuitry to the 14 pin plug. You can get a diagram of the Xmt wiring in the manual.
We really need more info on the actual wire feeder to know if it's cc compatible

its a job thats on my long finger but i have no real reason not to have a play at it either, spare time id be about the biggest end of it.
i have a list of projects that im going through, one being a press im close to geting back to working on so i wouldnt mind having 3ph 350A mig at it all the same.
ill start a new thread maybe on it if you dont mind, it ill keep it together.
ill take a few pics of it too, im not sure if its even working tbh but it should be given where it came from.
ive looked for the miller plug and i can source it alright, not so sure about the murex side but i might have a murex cable in a pile here possibly.
ill do a bit of research and ill report back.
id appreciate any help on the matter.