MIG Welding Setting Voltage and Wire Feed Kevin Caron
(Text on screen): MIG Welding: Setting Voltage and Wire Feed, Kevin Caron, kevincaron Kevin Caron: So, a question I get asked a lot is, quot;How do you set the dials on the MIG welderé Where do you startéquot; quot;How to you know where to set it at for, like, a piece of 16gauge, versus, like, a piece of, like, quarterinchéquot; Come here. I'll show you. So, on the 251 Miller, Miller was nice enough to give a chart with rough settings so we can kind of know where to start from. So, come here. Take a look. Come here, come here, come here. And you can probably find this on the Miller site if you look around for it. You've got a chart that shows you, you know, asks you, quot;What are you weldingéquot; Steel; you know, steel for outdoor, windy applications, stainless, aluminum.
It suggests wire type: solid core or flux core, stainless wire, aluminum wire. Shielding gasses: that's the stuff in the bottle. Hundred percent. I mean, it's all right here. It spells it all out for you. Different wire sizes. I'm running 035 wire in this machine right now, so we'll set the machine up for that. And then it shows you the different sizes of metal: halfinch, all the way down to 22gauge. So, I've got a piece of 16gauge sitting on the bench. And we're running 035, with a mixed gas, so it's 75 percent argon, 25 percent CO2. So we know we want to start with about 16 amps and about 165 on the wire. So, come around the other side of the machine; come around on the front over here and we'll set it up there and just see how that works. So, we want 16 on the volts (come on, fingers). And we want 165 on the wire.
It's always gotta be difficult. Close enough. OK, so let's put our helmet on and we'll come over to the table and we'll give that a try. And we'll look at what it does and figure out if we want to raise it up or lower it down. OK, so let's just run a little bead and we'll see how the settings work. Watch your eyes! (welding) Pick up your helmet. Here, come here. Zoom in right here. Can you see thisé The Voice: Ah. Yeah.
Kevin Caron: See, this is the first little part that I did where; a quirk with big welders, especially one with an extralong cable, is you have to purge the cable first thing in the morning to get your shielding gas back up to your tip again. So, that first little bit I did right there, I didn't have any shielding gas. That's why it sounded different. That's why it made a little bit of a mess right there. And then I started over and I put a bead down, and it worked just fine, because I had gas. OK, so looking at the weld, you can see the weld turned out really nice. It's nice and flat, it's smooth, there's no big gaps or anything in it. But you can see it's a little lumped up; see, kind of tall in here where it didn't get a lot of penetration. And that's either the wire feed was a little too fast or the amperage was a little too low, or maybe I just moved a little too quick.
Let me just mess with the controls Let me turn the amperage down a little and I'll turn the wire feed up a little, way out of proportion, just so you can see the difference. Hang on. The Voice: How much of the time do you have to, sort of, interpret what you're doing and just kind of get the feel of it and know what you're doingé Kevin Caron: All the time. All the time. Those gross settings over there are just kind of a starting point, but you really have to take into account the metal that you're working on, how thick it is, it is clean, is it dirty, are you inside, are you outsideé I mean, these are all different things that you have to keep in mind as you're working. And you have to change as the situation changes, as you're working. So, the setting that will work right now, five minutes from now may be wrong.
You may have to go over and give it a little more amps, a little more wire or a little less, and you've really just got to kind of play with it. And it's really something you learn over years of experience. The Voice: Are there any sounds that you can listen foré Kevin Caron: Oh, yeah. We'll talk about that in a minute. Hang on. OK, so I've turned the amperage down. The Voice: To whaté Kevin Caron: To 14.7; just gave it a twist. And I turned the wire feed up to 200. Now. Go ahead; put your helmet back on. Let's see what happens now.
Butt Welding Sheet Metal With A Mig Welder
Hey guys. I wanted to take just a minute.A few minutes here and talk about mig welding technique when you are doing difficult welds.I think the most difficult weld to do is a butt weld on a piece of sheet metal. And I'vemade a few tutorials welding patches into cars and things like that and I've made a coupleother tutorials welding on the bench. And what's interesting is of all the tutorials I have, oneof the ones that gets my top views is one of the first tutorials I made which was on migwelding technique. And, I sorta covered some things in that tutorial but I thought it wouldbe worth another look at just straight up How you deal with a difficult situationof butt welding sheet metal.
So, I may have to do this in a couple different clicks justdepends on how well focused I can be. What I tried to do is take a difficult situationhere and these are welds that I did previously, this was another piece to another thing. ButI took just two pieces of scrap and I made kind of a funny line here just to make itdifficult to weld. And I didn't cut the line particularly straight so the gap is nice,nice, nice, and then it widens out and widens out even more when we put all this together.There you can see it a little bit better. So this is not going to be easy to weld. I'musing a 110 volt Hobart Handler and CO2 right there. C25. And I really prefer the 110 units.The 220 units will do just fine but the 110s
as far as the millers are concerned anywayjust seem like they have a softer, a softer weld I don't know how to explain it, its justfeel. I've done a bunch of welding in my life. I'm not really dressed to weld, but I wantedto make this tutorial so please excuse the sweatshirt I would normally have a welding shirt on butI wanted to show you guys how this is done. I did not, I did not make this. I've seena lot of tutorials out there that show this perfectly sheared edge, you know, and welding two perfectlysheared edges together really is very, very easy. But when you get these kind of handcut things here it becomes more difficult. And I'm not. I don't have a heat sink behindhere or anything else, but what I do have
is a body dolly. I use this all the time witha copper sheet just kind of pounded over it. You can hold this behind your welds and weldto it if you get to a particularly difficult spot. We're not going to use that tonight.Basically that will just make things easier for you later in life. I am going to wearmy auto darkening helmet here and away we go. So I'm going to start where this clampis. And, you know, I suggest whatever you're doing, always clamp your work it just makesthings better. We're going to put a weld right by the clamp. (welding)
And if you were looking at this,you would see the back part of the weld eroded just a little bit and so the next thing I'm goingto do is probably closer to what you guys would do at home where you can't get a clampin the middle of a panel. I'm going to lift this up so it's not touching anything. I hopeI don't knock my camera over here. Hang on guys. (welding) So there's a nice little weld rightthere. You constantly want to take a look at whether or not these surfaces are paralleland if they're not, you take a hammer and make them so because if you weld them andthey are uneven, they'll just continue to
be uneven. The other thing to keep in mind,and this is a huge deal, is the distance of your mig gun to the work. The further awayyou get, the less heat you have. So if I have a really difficult spot. Let's come out herewhere there is a big gap and I'll show you what I mean. Can you guys see that, is thatin thereé Let's see if I can lift this up just a little bit, hang on guys. Put my clampon my work here. I'll try and lift this thing up so you guys can see. You know, we're asubstantially large hole right here. In order to fill that hole, if you hold your gun back,and I'm going to weld here. (welding)