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Help with new lincoln mig

Started by linalj , Dec 26 2013 07:31 PM

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15 replies to this topic

#1 linalj

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Posted 26 December 2013 - 07:31 PM

Hi. Mate has lent me his new lincoln 180c gas mig

Its brand new came with all the accessories like gas hose , regulator etc

Now im running 0.8mm solid wire with 0.8mm tips. Ive tried 0.6 wire also. No matter what i do, adjust wire speed / amps, its producing terrible welds

Ive tried adjusting the argon / oxygen to 10litres per minute all the way through to 30litres per minute... Still nothing changes. The mix is argon shield light from boc (75% argon 25% oxygen)

Im about to flip my wig , i can hear the gas coming out of the tip, but it seems its not doing anything. Please help

Also the arc seems to splutter and carry on a bit aswell. The test welds are in a new piece of 1mm sheet metal

image.jpg 218.56K 3 downloads

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#2 wot179

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Posted 26 December 2013 - 07:56 PM

Theres no gas at your weld.

Get your torch closer.

5 mm away should get you going.

If that's not it turn your wire to zero and hit the trigger and cover the nozzle with your hand to see if you can feel the gas.

If you cant feel it, theres no gas and there is a problem with the torch. Could be the gas line has popped off inside the torch. Could be an incorrectly fitted nozzle, could be the wrong welding tip.

Post a close up front 3/4 pic of the nozzle if you like, it might help diagnose the problem.

Post a pic of the regulator while you are pulling the trigger while you are at it.

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#3 Stinga

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Posted 26 December 2013 - 08:16 PM

i have just bought the same mig and am hoping to fire it up in the next couple of days. might be a silly question, but have you swapped the nozzle from the plastic one that comes fitted on the gun for the gasless wire?

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#4 _mikecatts_

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Posted 26 December 2013 - 08:27 PM

Matt...Try using a .9 tip with the .8 wire...I use argon with 7% oxygen... 25% oxygen will cool the weld... and have no penetration as your welds are doing... Hold the tip about 5-10mm from job.

Mike

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#5 UCSLE

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Posted 26 December 2013 - 08:29 PM

Where you are welding is it windy? Close to a fan? Maybe try another bit of steel , it might be just my monitor but the colour around the weld doesn't look right, too yellow like it is zink or something.

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#6 wot179

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Posted 26 December 2013 - 08:45 PM

I like Stingas theory a lot.

I didn't know they came that way.

Let us know how you get on.

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#7 _Viper_

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Posted 26 December 2013 - 09:29 PM

25% oxygen? Normal atmosphere only has 20.9% oxygen! Was that a typo? If not then you have the wrong bottle as Argoshield light only has 3.1% oxygen, 91.9% Argon and 5% Carbon dioxide

And would certainly cause the issues that you are getting.

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#8 _mikecatts_

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Posted 26 December 2013 - 09:38 PM

Just had a thought... Some welders come with sample wire.. Your not using the "gasless" wire??????

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#9 Stinga

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Posted 26 December 2013 - 09:38 PM

I like Stingas theory a lot.

I didn't know they came that way.

Let us know how you get on.

this is how mine was set up craig, out of the box(though mine is the 180c also) guessing they all come that way

http://www.google.co...0&tx=103&ty=106

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#10 UCSLE

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Posted 26 December 2013 - 09:52 PM

If they are set up for gasless the polarity will be the wrong way round .

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#11 Stinga

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Posted 26 December 2013 - 09:59 PM

If they are set up for gasless the polarity will be the wrong way round .

yep your right, also another thing that needs to be changed for gas

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#12 racean69

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Posted 27 December 2013 - 02:32 PM

does look to be a gas flow problem, check all the lines, check O ring in the torch connection to welder, around 18lts/min should do the job.

The argo light is ideal for panels.

You got .6 rollers in also?

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#13 linalj

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Posted 27 December 2013 - 04:43 PM

Hey guys all sorted. Seems the gun hose wasn't quite snapped into its hole so some gas was actually coming out at the base of the unit instead of the tip!!!! Ill post some welds, much much better!!!!!

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#14 linalj

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Posted 27 December 2013 - 04:46 PM

Will I have to change the polarity ? Seems to weld ok as is?

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#15 _ryan350_

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Posted 27 December 2013 - 10:07 PM

just read the instruction manual to find out what leads go onto which ie - + . When i first got my lincoln 180 i had a similar problem. decided to read the manual and found that the leads where set up for gasless welding. Swapped them around and she was sweet after that. There a great little welder!