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Yes when i go to weld with my mig welder some welds come out perfect and other time it burns through the metal what am i doing wrong

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Staying too long in one area & too many amps

Posted on Jul 20, 2009

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I have just bought a Gasless Mig Welder and someone has said its only used for tacking. Is this right?


wrong
gasless mig welders are used the same as gas /wire migs
the only difference is the polarity of the leads to the hand piece and the work ground and this is indicated by the plug in the machine for the ground lead
what the "someone " would have been referring to is the duty cycle of the unit
every welder has a duty cycle because of the heat generated in the welding process by the electronic components and transformers and if that duty cycle is exceeded the machine stops working until it cools down or damages the circuits
it is stated as a % of time in use so a unit with a 20% duty cycle means that for every 20% of use it has to cool for 80% of time
as an example ---if you were using a stick welder, the time taken to burn the stick would be 20% and the time taken to insert a new stick and clean the slag off the weld to resume the process would be the 80%
It also depends on the amps being used for the weld
on a machine with 120amps capacity and you were using 15 amps to weld sheet metal--body panels - the length of welding time will be considerable compared to using 115 amps where the weld time would be a few minutes
there are plenty of helpful hints in the operators manual and other technical publications on line

Aug 09, 2016 | Welding Tools

2 Answers

What is the basic technique in welding


Hi:
Well don't know were to start, basic technique goes according with the type of metal to weld and type of wire to use.
I think if will be better if you read the basics of welding with MIG machines with an owner's manual. Check the link and go to section B-7.
http://www.lincolnelectric.com/assets/servicenavigator-public/lincoln3/im564.pdf

Sep 13, 2011 | Welding Tools

1 Answer

Hello, I have had a mig welder for some time and don't use it much. This year I went to use it and the tip was shot. I replaced the tip and thought all was well. Then I went to weld horse shoes but my...


well theres a couple things it could be. first make sure the surface is clean. second check the type of metal the horseshoe's are made of. its really hard to get welding to stick to pot metal.

Dec 22, 2010 | Miller matic 140 Mig Welding Package W/As...

2 Answers

I have a craftman mig 110v mig welder arc problem


Check to make sure the contact is not touching the nozzle of the mig welder. This would definitely short it out!

Apr 14, 2010 | Lincoln Welding Tools

2 Answers

Mig welding 1/16 thick metal


you should run power between 160-180 to get a godd weld with out burning your work

Jul 01, 2009 | Campbell Hausfeld RBWG202000 NA 70 Amp....

2 Answers

How do i weld thin metal with out burnning holes


First make sure your work area is out of the wind
Get some of the same thin metal to practice with.
Use the thinnest wire you can get. Start on the lowest
Volt setting and wire speed start welding and increase
Your wire speed till it sounds frying bacon and use
Stitch welds about ½ long wait a few seconds then lay down
The next weld start at where you left off that way the metal
Has time to cool some dial it in and practice.

Mar 03, 2009 | Campbell Hausfeld RBWG202000 NA 70 Amp....

2 Answers

Mig Question


MIG stands for Metal Inert Gas welding, many times called Wire-feed.. Also referred as GMAW (Gas Metal Arc Welding). The "Metal" refers to the wire which is what is used to start the arc. It is shielded by inert gas and the feeding wire also acts as the filler rod. A semi-automatic process, it is fairly easy to learn and use.

Aug 27, 2008 | Lincoln Electric LINK2400-+1 CV-305 MIG...

2 Answers

Mig problem


For certain type of work TIG is required, like welding chrome moly for some racing organizations. Intricate work, like gunsmithing is also well suited to TIG. TIG is used by many auto restorers who prefer a more precise, perfect finish that requires little to no finish work. TIG is most similar to gas welding in technique, so if you've done oxy-fuel welding, TIG should be a natural transition. MIG is required by law and by insurance companies in many localities for structural repair of automotive frames. MIG is also much easier to learn and faster to weld. For doing other types of welding, like sheet metal, it can be a matter of personal preference. For an auto body repair shop or a novice welder, a MIG is a good, practical all-around welder.

Aug 27, 2008 | Troy MIG100 90-Amp. Wire Feed Welder

2 Answers

TIG MIG Difference


For certain type of work TIG is required, like welding chrome moly for some racing organizations. Intricate work, like gunsmithing is also well suited to TIG. TIG is used by many auto restorers who prefer a more precise, perfect finish that requires little to no finish work. TIG is most similar to gas welding in technique, so if you've done oxy-fuel welding, TIG should be a natural transition. MIG is required by law and by insurance companies in many localities for structural repair of automotive frames. MIG is also much easier to learn and faster to weld. For doing other types of welding, like sheet metal, it can be a matter of personal preference. For an auto body repair shop or a novice welder, a MIG is a good, practical all-around welder.

Aug 27, 2008 | Radnor A35HP 350A Water Cooled 25' TIG...

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