🔥Beginners Guide to SHORT CIRCUIT MIG WELDING

welcome to weld calm we're over the next four weeks we're gonna be talking about gas metal arc welding modes of metal transfer and we're gonna kind of break things down a little bit and when I say break things down a little bit I do need to tell you that we're kind of taking well calm and a little bit of a different direction we're gonna concentrate on some processes we've got some in enriched visuals and the audio is getting way better so I just wanted to encourage you to hit the subscribe button and stay tuned because we're gonna try to bring some cool content plus we're working on some collaborative efforts with some other people around the states here that some cool stuff in education so we want to talk about gas metal arc welding modes of metal transfer and there's four that are recognized mainly when you rattle them off and it's short circuiting globular spray all spray each of them has its place one of which I don't use a whole lot and we'll talk about that here in a little bit so this week we want to concentrate on the short circuiting process it gets its name because the wire comes out of the gun makes contact with the grounded material and shorts out and it does this hundreds of times per second and that's where you get that everybody's familiar with that what they call it frying baking sound it has a distinct sound to it so and they're you know not to throw things off it you can do a lot of things with some art features and stuff we just want to keep it real simple and kind of explain how things are set up so I want to do some demonstrations on various joints I have some material laid out here I'm do some lap welds on some 14 gauge and and 10 gauge and we can do thicker than that with the short art surf process outside corner joints t welds and stuff like that so let's get some gear on and get right to welding okay we're gonna get started with the short circuiting gas metal arc welding process I'm running off of a esau rebel MP 215 I see gas metal arc welding there are two functions that affect the arc voltage and wire feed speed you got to think of wire feed speed as a function of amperage depends on the type of gas we're running and the diameter of the wire I like the fact that these are both independent I also like this particular machine because I have some other controls within here electronically that I can control the arc and that's like a whole nother video I'm trying to keep this real simple here so for short-circuiting I'm gonna run some beads here I'm going to start out with 17.5 volts 200 inches a minute on wire feed speed I'm running 75% argon 25 percent co2 short circuiting gas metal arc welding can be run on two gases 75 25 and just straight co2 pure co2 today we're running off 75 25 okay so I wanna I just want to run some beads and quickly change just a few things so you can see it and hear it and then I want to start applying it to some actual weld so that you can kind of see where to use this and how it makes sense okay I'm gonna run a couple of beads here in case some of you are wondering where did I come up with these numbers here why seventeen and a half volts why two hundred inches a minute I'm on oh three Oh er 70s six wire with 75 25 and I've I've been doing this for so many years I mean I understand the process I read study and I've done this so many times it's kind of not joking but I know how to use it anyway you know I want to run some demos here and pull the trigger on this and let you see it in here and this is kind of cool but this is that that short circuiting this is that crackling buzzing sound at frying bacon hopefully I'll get the essence of bacon here up my hood pretty stable condition okay hopefully the audio came through and you heard that real nice this is on clean material we've done dip we've done videos and demonstrations on dirty versus clean metal and I'm telling you it makes a difference I know a lot of you that know me you know that I hate to grind however when it comes to MIG welding TIG welding and prepping material I will do it faithfully religiously because it needs to be done there's nothing worse than running over some of this material and I'll explain why I want to run a bead on some dirty material and I want you to hear it hopefully it's enough of a difference of sound I know I'm gonna see quite a bit here [Music] I heard it and I see it this bead lays down nicely it's nice and round it has a smooth ripple pattern to it this bead is peaking yet it looks dirty it has black stuff on either side and it sounded a lot different to me hopefully you picked up on that so where do we apply this this short circuiting mode I have 14 gauge blasted and I'm gonna I'm gonna do a just to fill it well just so you can kind of see we start putting some things together in different joint configurations here so I just want to run a fill it well at these settings on 14 gauge material okay you know quick little fill it weld here putting two pieces together again 14-gauge you know fairly thin sheet metal oh three oh wire this is a super application another one another simple joint configuration would be outside corner joint this would be considered heat sensitive because we're thin and we're all out here on the outside corner so let me tack that up and we'll weld that real quick okay I have two pieces of fourteen gauge set up in an outside corner joint after I did the fill it weld just out of the top of my head I think I want to change a value so what I'm going to do is I'm going to go down to seventeen volts and I'm gonna drop the wire feed speed down to a hundred and eighty inches a minute the reason I'm doing this is I don't want to blow this outside corner join up and I may miss you know I'm kind of I'm kind of using this from past experience and common sense I want the weld to be a little cooler okay so you know just from experience I just want to drop this down about a half a volt and I want to slow the wire feed speed down which lowers the amperage the other things I have left here for me to adjust would be travel speed okay so let's see if we see what happens here I'll do half of this and see what happens it should go it should be pretty close [Music] a little wire explosion there at first it'll easily clean that off so that was a pretty good guess you know we didn't blow this thing up I had to travel fairly quick we are fused around the edges of this and we have a little bit of penetration on the backside very successful weld joint just made a pretty decent weld on here I went over and buffed that wire explosion thing off there it popped right off and after doing this you know it was running in there pretty quick and I was traveling pretty fast I want to do something different now I'm gonna I'm telling you that we were able to change voltage and wire feed speed I like the voltage where it's at because this crowned up a little bit I want to slow the wire feed speed down so I'm gonna go from 180 down to 160 and I should be able to travel a little slower I expect the weld to be a little more fluid and that's about it again this is thin metal we're not trying to do anything special with it we don't need a great big weld so let's see what happens here I liked that reaction better it was still in the short a good short-circuiting first one just seemed I was able to go a little slower the first one seemed really fast to me and keeping up with it barely barely wiggling the wire so again we're melting the edges over the top it's not a critical well we still have penetration on the backside so that's 14 gauge sheet metal we could do lap welds about these settings because we're not trying to build up we're just trying to fuse things together I'm gonna move these pieces away and we're going to go to ten gauge or eighth inch material okay we did the 14 gauge and we did outside the corner joint and a team weld and so I've turned the machine back to our original base that we started this video and that was 17.5 and 200 inches a minute 17.5 volts 200 inches a minute and from there I just want to I want to leave it and I want to do this outside corner joint on 10 gauge material I have a whisper of gap in here I'm going to call it 1/32 so not much at all and again for camera angle and speed I like to prop these little rascals up you're gonna be able to see that their camera guy [Music] good condition we can see where I rolled my wrists a little bit here on the table you can tell a little bit of variation in travel speed no big deal nice weld that fused together we've got a little bit of penetration on the backside settings probably would not do me any better as far as penetration material prep or the gap opening would probably get that done since I've already finished that on the outside of this outside corner I could come in here and quickly demonstrate a Filat weld on the inside corner going downhill slightly [Music] we're in a little bit on the inside here with those same settings a couple of things here you know the the material was heated from doing the weld on the outside first but this thing blended nicely I want to demonstrate a lap weld neck and this is 10 gauge material the first part of this well I'll leave the settings exactly like they are seventeen and a half volts 200 inches a minute wire feed speed so I left those settings alone I like the sound of it I like what I'm seeing here I was able to move comfortably as far as travel speed the weld profile fits across here there's a whole video series on gun angle and electrical stick out you know nozzle distance and all that kind of stuff but again simple stuff just travel along running straight lines with is travel speed so you know that's the first part of the 10 gauge lap weld could I change settings and do something different sure you know we can experiment you know I get over to this tee weld on the same thickness of material then we could play with some settings there go up I don't want to go down any and values I could just probably go up because that particular weld always tends to take a little more energy and taurine go faster you can pour a little more heat input into it so for a variation let's change this and go to eighteen point two volts 225 on the wire feed speed a little different profile not much this one was obviously a little hotter wetter I travelled just a bit quicker but you know they both work if I turn this over and either one of them are melted through the base metal of parent metal I kind of like this hotter one better just the way it looks you know the profiles across here and I think the edges are burnt in just a little better so again we're talking about 10 gauge sheet metal 8 inch material it's not critical so I like these values I'm going up slightly from my base so I think I want to I think I want to go into this filler or this tea weld here this fill it weld these are both fill it welds technically by the way and so I want to want to make this well one of them in the horizontal position as its as it's sitting right here and the other one kind of downhill just to just to show some quick applications here and what you can do okay I like this profile here I probably you know looking at it and listening to it probably go up a little bit and wire feed speed but I think it's fine now when we turn this and go up like this and I probably will turn this up a little bit in wire feed speed I want it to be a little more active because I'm going downhill this weld laid down pretty nice I went from 225 up to 235 and I was able to travel faster again I'm just on the backside of what I just got through welding on the material was warm so you know that's that's something to talk about we can get into so many of these variations and subtle things that actually happen I'm just trying to bring some awareness about voltage changes wire feed speed changes we're on a 300 material and it's pretty versatile when you when you go from soup something super thin to some fairly heavy material have one more quick demo and we've done this a lot on camera we've done bin tests and etching and x-ray and all kinds of stuff and it's a hundred percent fusion on groove material this is quarter-inch I've bailed it to 30 degrees cleaned it put a sixteenth route face on it three thirty second gap it looks like and I'm gonna set it up like this and just kind of slightly run it downhill short-circuiting oh three go try to get a hundred percent route fusion 17.7 17.8 volts 235 on the wire feed speed [Applause] [Music] [Applause] okay I did this I set this up here and then really strange set it up so the camera guy and you could see it been everything so I'm actually welding back handed and completely weird for me anyway I should have switched hands and tried it right-handed but got to going downhill out ran my wire shoved it through there got to stay right on the leading edge of the pool when you do you get 100% route fusion I jumped forward I shot the wire through there and shot it into dead air space and there's no arc at that time so you know I'm usually good at screwing up at least once during every video and I man up to it and leave it there so that's what happens you know you get going too fast or you jerk forward or some smooth transition you can put some beautiful beads in there now since since we've created this since we've created this groove then I should be able to run a one more pass in here and fill this all in with short-circuiting I'm gonna go uphill now so 2:35 17.8 I want to go down in voltage because I'm gonna be carrying a fair amount of material I want to go down in voltage and I want to drop the wire feed speed just a little bit I want to cool the pool so to speak okay so by common sense and my experience I'm gonna go down and volp's down in wire feed speed so we dropped this drop the values down a little bit because we were going to be carrying a fair amount of metal and to me that worked up pretty nice this thing is in here with good edges it's got some nice reinforcement to it we clean this off this thing this thing will Bend test x-ray all day long done it a million times no worries you know these are some practical applications of what you can do with short-circuiting and there's a lot of things to talk about some variables main thing is clean your weld material for short-circuiting clean it and all of it for that matter to go faster you get better fusion I filled it a message last night one of the things we talked about is well how far does the nozzle distance affect what's going on yes it does so for short-circuiting and globular and some of these other processes they matter think of it this way electrical stick out from the contact tip to the arc for short-circuiting keep it around 3/8 of an inch about 3/8 of an inch is a good all-around that's where I've got this clipped off another thing is to clean your nozzle and clip the end of the wire off it's you get better starts make sure you have a good ground so you know these are these are some things this process is very versatile and we use it a lot in manufacturing do some repairs some fabrication a lot of Hobby work hope you found the material educational if you like what we're doing check us out on Instagram and Facebook thanks for watching welcome i'm bob Moffett with cali college damn kids I like that bacon bacon bacon check them like I'm like I'm like a monkey I'm kind of ugly for the camera guy what wait a minute huh

Channel: Weld.com

Views: 132,615

Rating: 4.9457669 out of 5

Keywords: welding, weld.com, mig monday, tig time, how to weld, learn how to weld, short circuit MIG, mig welding, short arc, short arc mig

Id: 7_T2VVCnVl8

Length: 23min 16sec (1396 seconds)

Published: Mon May 07 2018