Pulse weld settings. Explained Primeweld 225.

welcome back to the channel ladies and gentlemen today we'll be talking about tig pull swelling what it is when to use it and how to set it up so today we're going to be setting this up on the prime weld tig 225 now not to worry if you don't have this specific machine your knobs and buttons might be slightly different but the general principles will still apply so what is pulse welding pulse welding is a function that a lot of newer machines are coming with just from a baseline and it can be super helpful so the general purpose of pulse welding is to accomplish the most amount of penetration with the least amount of heat input so in short is the machine cycling on and off to be able to spike some of that amperage in wet your puddle out and then back off and let that puddle solidify so when are those opportunities is going to be a bonus number one is going to be thin materials especially because the purpose of it is to minimize that heat input and those thinner materials are going to absorb that heat and potentially blow out easier another application is autogenous welding when you have a nice tight fitment and you're not adding any filler metal and it's not necessarily structural maybe you can just go along and fuse that together and that pulsed arc going on and off will help you with consistency and keeping that heat down especially with that thin sheet metal another application for it is out of position welding that pulsing arc is going to help solidify that puddle and keep that puddle from falling out on you another application is going to be tig brazing pulse welding is really good for tig brazing because when you're tight braising you are just wanting to melt that filler metal and you do not want to melt that base metal or substrate so that pulse and cycling arc is going to help you get that blast of amperage and wet out that puddle but not necessarily penetrate into that base metal and the final place that i see pulse welding is super helpful with is build up if you are building up on a part a lot of times you're making pass over pass ever pass in order to build that material up and the ambient temperature of that piece is going to be building up and in turn it's going to be wetting out more and more with every pass and you're not necessarily going to be getting the depth of field that you're looking for in that buildup so what that pulse welding is going to help you do is going to solidify that puddle and help build that area up quicker and faster and still get a tight bond to your substrate so now that we understand what it is and when to use it let's jump into the nitty gritty on the white board here we're going to go over four basic principles that you're going to need to adjust in your settings to get this dialed in for your application number one is going to be your peak or total amps that go into the machine number two is going to be your base amps or your background amps number three is going to be your hertz or the frequency and number four is going to be pulse duty or dwell time okay that's better just for simplicity's sake we're going to say that all these setups are going to be ran at 100 amps because a lot of these settings are set in percentages and 100 is a nice round number to work with so like i said our first setting is going to be our peak amps here and that is represented by the top crown of this graph we know that we're going to use 100 amps we can set our peak amps or our total amps to 100 on the machine the next one is going to be our base amps or our background amps base amps are set up in percentages and we're going to depict that in this graph by our green line so that's going to be our complete base zero amps and then the top here since we're doing a hundred amps this is going to be our hundred percent so the way this graph depicts it here we would be roughly about 10 our base amps are about 10 of our total amps so what that means is when we're cycling here we're going to go up to 100 amps and then we're going to go down to about 10 amps or 10 of that so if you had this set at 50 this would only cycle down half that distance or half the temperature so our third component that goes into this is our hertz or frequency and this is very similar to the way ac current is laid out we're going to be running straight dc here but if you watch my prime world settings video i can pop that up here you can see and kind of comprehend that way that works so your frequency is determined in time so one of these cycles is a hertz and we have one second depicted here by our blue line so our frequency is set up to one we are going to get one of these cycles in one second now if we have it on 200 we're going to get 200 of these cycles within one second so when you turn that dial on your frequency you're depicting how many of these waves happen within that one second period so on the graph here we just have one of them happening within one second if you want to tighten that up you can get lots of them on the prime weld you can get up to 200 hertz per second so that's 200 cycles per second and the fourth and final variable is our pulse duty or our dwell time and what this is is the amount of time that you are at your peak amperage so if we look at this graph here we have this set up at one second and our peak camps go over and drop off halfway through that cycle so this would be set at 50 percent to represent that it is going to be on for half the time of that cycle and it's going to drop off so i actually like to tighten this up a lot of times we'll show this by some of the graph here because when i need the pulse feature i'm really wanting to tighten that up so i actually like to run my amperage a little higher and then shorten up that dwell time so i get a blast of amperage and then it gets a lot of time to solidify and just harden that puddle up before it goes into the next one so let's run through these other two setups here so you can see the two different variables and then we're going to translate this over to the machine and show you some actual footage and we'll run through some troubleshooting so that you can figure out how to get it best set up for you okay so our second setup remember we have this depicted as one hertz on all of these so we have our peak amps is going to be at 100 amps and then our base amps here so the distance between our peak and zero is a little bit higher so we're going to call that probably about like 35 probably because it's about 30 in between our zero and the top of our peak camps so that's going to allow it to drop down it's not going to cool down quite as much because some applications you don't want it to cool off as much and then we have our dwell time our dwell time is a little bit shorter on this run so instead of 50 like we have going up here i'm going to say this dwell time is more like probably about 30 percent so let's do our final one here so remember we're running at 100 amps so that's going to be the top of our waveform and then we are going to do our base amp and in this case i'm going to say that is that's creeping up on 50 percent let's call it so our base or our background amps are going to be 50 of our peak amps or total amps which is 100 amps in this case and then we have our frequency which in this case we're just doing one pulse per second and we have our dwell time and this one our dwell time is set up just a little bit longer it's going to be more like probably 70 i'm going to say there so so that current is going to be on for longer within that cycle and then it's going to drop off and come down so let's jump over the machine and see what this looks like translated into the settings on the machine so we can get you on your way okay so now that we're over here at our machine i labeled out the four knobs that we're using on our prime weld at least and these are the four settings you're going to be using on any machine and then the primal has this fifth little feature over here but our number one is our peak or our total amps our number two is our base current or our background amperage number three remember was our hertz or our frequency and number four was our pulse duty or our dwell time for the sake of simplicity we're going to bring this guy our peak amps to 100 amps just like we did before 102 somewhere in there and then we want to set our base amps and in most cases i like to keep this all the way down as low as it'll go because when i go to use it i want it to freeze that puddle up as much as possible when it's if it's going to be in the like 50 range a lot of times i can do that on the fly just using the pedal and adjust for that but when i really want that puddle to freeze up is when i'm going to be using the pulse feature to begin with and i'm going to run that almost all the way down now that can vary between the materials you're using some materials you don't want to fluctuate that amperage as much so when it comes to frequency prime wild has this other little switch over here and what we have here when it's on the bottom we have straight current and then when you want to do from one to 10 pulses you stick it up here on the smaller pulse feature and then prime weld you can run all the way up to 200 pulses per second so if you're going to go from 10 to 200 you put that on the middle position a lot of times when i'm working with it and using pulse i'm going to be in slower position so i'm going to run it up there and then most of the time i'm going to be in between 1 and 3 pulses per second so we're going to be in between down here to this range-ish now with the frequency there's multiple different ways to approach it most time when i'm doing like thin sheet metal or tig brazing or anything like that i am going to be running in between the one to three pulse range and that's going to give you a nice rhythm to work with depending on how fast you go it allows you to either do a lay wire method you can lay that in there and pulse over it or you can time it and dab in between but that's going to really keep the temperatures down whether you're doing sheet metal or brazing and allow you to get a nice dime look now this machine also allows you to go all the way up to 200 pulses per second so where those higher pulse ranges shine is when you are doing out of position welding and you maybe you're welding upside down and you want that puddle to freeze on you so it's not falling out and getting too hot and kind of sloughing off on you or for build up if you're building up a part like something that maybe needs to be machined down and you want to just get a lot of build up on there that's where those higher frequencies are going to shine it's going to allow you to weld almost like you're welding straight current but it's going to give you that good puddle freeze you're going to get more height on that weld which is going to allow you to build it up faster and not have to worry about that weld sluffing off and not really gaining ground as your part is heating up and then our fourth position on the machine is our pulse duty cycle or dwell time and this is set up in percentage as well like i said this is all going to depend on your application most the time by the time i want to use pulse welding i really want it to be stay cool or solidify because i'm not able to do it utilizing my other skills so i'm going to have that pulse duty somewhere down here on the lower end so that's the hard part about pulse welding it's going to greatly depend on your technique and your style and what you want to accomplish okay so let's do some troubleshooting here and kind of go over how to diagnose how to get it set up best for you so let's just say you're comfortable with one pulse per second so we're gonna click this to the slow position and we're gonna get our frequency down here to right around one pulse per second and then you set up your duty cycle and your amperage to where you think you want to be and you make your weld and maybe you have more of a crown on it than you would like to it's a little cold the heat input looks good but it didn't quite lay down the way you wanted it to so there's a couple different things that are going to affect that the first thing i would do is i would turn your peak amperage up a little bit and that is going to allow when that digs in and that initiates it's going to put just a little more heat into that and let that flatten out and then maybe if that doesn't work we're going to turn up our duty cycle a little bit so that the time that those amps are on in that pulse is going to be on for just a little bit longer now or maybe you have the opposite problem and you weld it along and you're starting to burn that puddle out and it's just too flat and you want just a little bit more meat in that puddle so before you go and turn the heat down since you want to cool that puddle down a lot of that involves with your feed rate and that kind of directly translates to the frequency so maybe instead of turning that heat down you want to turn that frequency up just a little bit so you have maybe two cycles per second instead of one cycle and then maybe you want to turn that duty cycle down so that it's not up on that peak amperage quite as long as it normally would be and of course this is going to depend on how fast you're moving your torch and how much pedal you're giving it when i'm doing it i'm not necessarily running full pedal i run these settings and i like to set my settings up so that when i'm welding i'm right around the halfway pedal range for whatever i'm welding that way i still have some control over the puddle as well well as i'm welding if i see it getting a little hot i don't have to stop and adjust the machine i can just back off the pedal a little bit or add some more rod so i'm going to set these settings up for me personally to be right in the center of my pedal range that's going to vary for you for your technique it's going to vary whether you are dabbing with a rod whether you are using a lay rod technique where you're just laying the rod in that joint and letting it pull swelled or if you're using rod at all so remember in the end the results are what matter how you get to that point as long as it's not an on-the-job thing where you have a written procedure that you have to follow how you get there doesn't really matter it's the results in the end that matter so don't let people beat you up on that find out what works best for you how you can get the best results possible and build some quality stuff so if you guys want to see some more fabrication content make sure to click some of the links that are going to pop up here thanks for watching guys and go build something you

Channel: AM Custom fab

Views: 7,323

Rating: 4.9612904 out of 5

Keywords: tig weld, pulse weld, welding, primweld

Id: bK0UCsyc-lI

Length: 14min 53sec (893 seconds)

Published: Sat Feb 13 2021