MIG Welding Principles

[tar21gi]

When you pull/drag, where is your gun pointing? It's pointing back at the puddle/weld, which is where the argon/co2 gas is being sprayed at. So yes you can get adequate gas coverage either way, the problem is when your gun angle is too severe, but that can happen with either push or pull, and thats when you can get porosity. If you find yourself getting porosity often, you should straighten your angle a little bit, clean your gun and the metal you're welding on.

[Koba4329]

@tar21gi alright, thx. will try that. was gettin conflicting stories here but that cleared it up. thx

[Koba4329]

k im getting conflicting stories here. im young and learning how to weld from a old pro. he tells me "push a wire, pull a rod" cause when you pull on a wire the gas doesn't stay long enough on the weld for it to seel properly so you get verosity. is that true or is this video true?

[tar21gi]

@Koba4329 You can push or pull with a MIG welder. When you pull with MIG you get deeper penetration, however the weld profile isn't as nice. When you push you don't get quite as much penetration, but obviously you get a much better profile. So it all depends on the job, and the finish required, but either work.

[Koba4329]

@tar21gi i was always told that when you pull the argon gas doesn't surround or get trapped around the weld which makes it less strong/less penetration and can cause verocity which isn't even a weld, just makes bubbles and just a completely hollow weld that isn't at all strong. is that true? or just bull?

[Koba4329]

@tar21gi sorry perocity*

[tar21gi]

@Koba4329 oh and also if you get porosity you might need to turn up the pressure on your shielding gas, btw I forgot to set my last response as a reply

[terminator363]

That last weld was amazing.

[rottweilerdog10]

Nice looking weld at the end there

[DAQUAN88]

@3:05 That weld had to be the display model!!!!!!!!!!!Dam

[scottstrike10]

anyone know the cause of cracks in mig welding.,.,these welds cannot be seen on the surface.any ideas anyone

[tsraina]

could you discuss multi pass welding and whats the best welder for weldng space frames using 0.120 chrome molly or mild steel.it for my race car/weekend fun car.

I just bought a chicago mig flux core 90amp that says it can weld 3/8 on a single pass

thanks in advance

what a way to test for weld strength I will need in a space frame on chrome molly/mild steel 0.120 tube.its for my tube chassis in my race car/super luxury car.

[monk1junk1]

i lol'd at "for a deeper penetraition"

[danjo7802]

love the epic guitar

[DrewSimmers]

Hey whats the name of the song playing in the background?

[MilleniumYT1300]

that weld was beautiful it almost looked like tig!

[1442bronco]

Ha Ha very funny willystylee.

[lassehoei]

must i use welding gogles when seeing the video !!!! thxs???

[willystylee]

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

[stevebigler]

I was looking for the idiot store, but I could not remember the number for 411.

[SthealthRaider]

O M F G!! what can pc arc burn mah eyes?!?!!? OMGH I WATCHED LIKE 1000 hours of welding vids..... WTF

[bozzza69]

@SthealthRaider no

[Tehtog]

@willystylee This is not true. The computer screen cannot reach the dangerous levels of light. Although you're spot on. A good visor is key.

[willystylee]

@willystylee

what the hell.. i never even said this.... o.O

[lassehoei]

@willystylee we not have Idiot stores were i live but i got some from my friend

[knallerten69]

JEG SER DENNE I KLASSA NÅ!!!!!!!!

[odaretla]

thanx great video

[odaretla]

thanx nice video

[nuradin22]

great vidoe where can i get like this vidoe

[gownozjad3]

Great video !! I have question: when I want deeper weld , more penetration I must "pull " or "push" weld?? I gues "pull" Im right?? And why when Im pull it will penetrate much more?? I dont understand it

[areynolds2000]

I think it has everything to do with the gas flow. If the gas flow is in front of the weld (a push), it shields it more, maybe cooler. The pull would not have as much shielding gas and would be hotter with more penetration. Someone correct me if this is wrong.

[thebizzlehimself]

I would say push would be deeper.

[FarmMachinist]

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.

[gownozjad3]

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

[kd5gua]

@gownozjad3, it is hard to examine many types of weld joints to determine what type of penetration you are getting without destructive investigation. Got to cut it open to view it. Do some practice welds are pieces that are narrow enough that you can take welded assembly over to your cut off saw and cut off some well back into the weld. This is the best and maybe only way to see what kind of penetration you are getting, other than being able to do an x-ray of weld.

[analturtle]

What does welding have to do with fighter jets?

[WillieWonka928D]

I'm gonna be MIG welding in school in a week or two. Thanx for the info.

[Nickifyoudontbuy]

This is actually a great vid, and despite its short length its quiet informative.

[andrewbnkjv]

great video, well made. Reminds me of forklift videos and others.