January 7th, 2009 
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Wire feed welding machines are also known as mig welding machines or for short, a mig welder.
Regardless of what you call the machine they all have the same basic features.
Going by the description of the name, you need to feed wire. As this wire is feeding, electricity melts it and the base metal together. This is essentially how it works. As long as you keep wire up to the electric arc you will be able to weld all day long.
Now to control this you hold on to what is called a mig welding gun. This allows you to accurately place where you want your weld to be.
Wire feed welding machines are rated by their power output in amperage (Amps). So for example a small machine might only be rated at say 90 amps and a large machine might be rated at 500 amps.
The more amps the more electricity is used which means you have to heat needed to weld thick metal.
Another point to look at, is what is called duty cycle. Now just because one machine might be rated at 100 amps and another machine is rated at 140 amps this doesn’t mean that the 140 amp machine is better. Welding duty cycle is a figure that is given for how much work the welder can do at full power and for how long.
This is rated in a percentage, so for example 20%, 30% and 40%. What this tells you is that how long you can weld for in either a five minute block or ten minute block of time. So if your machine is rated at 20% duty cycle you could only weld at full power for 20% of either 5 minutes or 10 minutes. The trick here is to know what time frame your duty cycle is rated at.
So let’s assume that your machine is using a 10 minute time cycle. This means that you can weld for two minutes at full power (20%). Now for the rest of the time which is eight minutes you cannot weld at all, you have to let the machine cool down. This is definitely one thing to look out for when you go to buy a mig welding machine.
A wire feed welding machine will also use consumables. The main consumables that you will need to keep buying will be your contact tips, nozzles and shrouds and gas diffuser. There are other consumables that do need replacing but not so frequently. They are your liner, contact tip holder and maybe a few O-rings depending on what model welding torch you use.
To find out more detailed information about wire feed welding machines go to my website and see some photos and videos all about welding: Wire Feed Welding Machines
Watch the video related to mig welding
all you need to know to weld like an expert.
Help answer the question about mig welding
When Mig Welding how can you see what you are doing?I've never done it before and I'm scared to try. I have to do it next week at a volunteer job only for this once but I'm still nervous of doing something wrong. My question is when you have a mask on (really dark) how can you see what you are doing?Any tips on this welding are greatly appreciated, even really basic things.
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Ha Ha very funny willystylee.
Have you guys seen “You Can’t Weld This!”? It’s pretty funny… The guys over at WeldingMart com had it made! Do a youtube search for it
yeah u need to, the even looking at an arc on a computer screen will burn your eyes. Better hurry and go get one from the idiot store
There is a big difference between MIG and TIG welding, in both the process, and the skill level required of the weldor. They really are two different processes altogether, and the MIG is the much easier of the two.
There is much to read on the web, including some great information at the Miller and Lincoln websites. They can give you a pretty great overview of TIG welding. But, as with many skills, it takes hands-on practice as well as study, to be successful.
If your fiance has ever welded with a gas torch, he might already have the skills he needs. Unlike a MIG welder, a TIG does not feed an electrified filler wire for you. You are in control of a separate heat source (the torch) that you must manipulate in order to melt the base metal together, while adding the filler by hand to the molten puddle you're creating. It's the same way a gas torch works, just with electricity, rather than gas, as the heat source.
The tricky part comes in learning how hot to make the puddle, how much heat to apply (with a foot or hand controller), and how to coordinate the filler at the same time. Quite often, TIG welding involves metals like aluminum or stainless, which have their own quirks that need to be considered. It's by no means impossible to learn all of this…and it can be a very valuable skill to have, often paying higher than MIG welding jobs.
If your fiance shows this prospective employer that he is a professional who takes pride in his work, has studied the subject, and is willing to learn, he may get his foot in the door and start down a new path on his welding career. I wish him the best. Study all you can, and if you know a buddy who is good with the Oxy-Acetylene torch, go visit him right away for some practice!
Best of Luck!
you may want to do a search on that (google). That may give u the help u need. Good luck!
mig welders need a shield gas unless u use flux core wire.
the best way to get a nice bead id to set your heat, and turn up the wire feed speed,…..strike an arc and turn down the wire feed till you get a nice bead with little splatter
Possum
glad you asked, Mig welding is really a simple task if you can already stick weld. what you see is what you get with a mig. follow the following process and you'll do great.
if right handed hold the handle slightly to the left just enough to see the wire sticking out of the nozzle, weld to the left in an overlapping circular pattern usually between 1/4 and 7/16 wide the lens should be sufficient if for arc welding. a quick practice on scrap metal should ease your concerns quickly. you will see the deposited weld in the lens and no chipping needed
Mig welding job listings in Dallas TX:
http://electricalengineer.electrical-designer-guide.com/a/jobs/find-jobs/q-mig+welding/l-dallas+TX
rofl makes me feel so dumb
First off, are you a good welder? If you have limited experience, you will not get good weld penetration with a MiG welder. Also if you use one of the cheap welders that you can buy at Lowe's or auto parts stores, they don't produce enough power to get a deep penetrating weld.
MIG means machine inert gas. Those cheap welders are called MiG but are just wire feed welders and not MiG. You must use gas to get a good weld. A cheap gas to use if you are a good welder is carbon dioxide. The weld is good only if you are very experienced. Next you can use 75/25 gas mix which is 75 % argon and 25 % carbon dioxide. Doesn't take as much skill and produces a reasonable weld. For a top job, use 100% argon. It costs a little more but does so much more.
If you buy a MiG, get a good one in the $2000 dollar range, such as a commercial Lincoln, Miller or Hobart. Go to welding school at your local Vo-tech and practice, practice, practice. Once you learn, you can weld car doors, bodies, exhaust, frame or anything else you so desire. As a good MiG welder, you can get a top paying job and be set for life. I prefer a auto darkening helmet when I weld. It makes learning so much easier.
must i use welding gogles when seeing the video !!!! thxs???
Im beginer.When Im welding Icant see difference between push and pull, In structure of weld.But I have only cupple hours of welding on my account:) Thank you
Consistency, quality, and operating cost. Remember, you don't need highly trained welders, just machine operators to run them.
very nice video
If the nozzle is arcing it means the insulator between the nozzle and gas diffuser is probably shot. You will have to either replace the insulator or make sure you don't touch the work piece.
Arcing outside the weld zone is not good, can lead to inbrittlement and cracking.
Oh, and good job on buying a miller…i hate it when people buy crap gear and expect miracles(or ask me to perform them with their junk welder)
Hope you are not using pure argon (just a wast of money for pure). You should be using a 75/25 mix of argon/co2. The shielding gas shields the molten metal from the atmosphere, more so oxygen and nitrogen to prevent porosity, and reduce the chance of cracks. To rent a tank you should call a local welding supply for the prices as the price varies quit a bit by location. I am in Ohio so a price I would give you would not be true for your location.
Here is a good site to look at, http://www.weldingtipsandtricks.com/index.html
http://www.weldingtipsandtricks.com/Mig-welding-tips.html
(32 years welding)
pull … deeper penetration …. push … less penetration.
pull … puts more heat into the weld puddle.
push … puts less heat into the weld puddle.
This isn’t always the case though … uphill & downhill are the exactly opposite. Uphill digs deeper where as downhill doesn’t.
When your practicing … don’t fill in you weld at the end … you can easily tell which methods penetrate deeper into the base metal.
JEG SER DENNE I KLASSA NÅ!!!!!!!!