spray and pulse welding
Tue, 31 Aug 2021 16:45:35 GMT
I am new to welding and having been reading these terms.....my welder is a lincoln power mig 255....is it capable of spray or pulse welding...if so, how? also i am currently runing 80/20 gas...what is the deal....spray welding seems to leave some really clean welds...
Reply:You will have three types of transfer with wire welding. short circuit, globular transfer, and spray transfer. these are determined by the voltage for the most part. Spray is run at higher voltages commonly with a mix having greater than 20% argon, and is used in heavier materials. If you are running 80/20 then the 255 will get into a spray transfer, but it will be in the upper voltages of the machine. Do a search for spray transfer and there is plenty to explain the details on it.I'm a Lover, Fighter, Wild horse Rider, and a pretty good welding man......
Reply:I agree with what has been said. If you are primarily dealing with steel under 3/8"' thick, I would recommend a 90Ar10Co2 mix but if you are dealing with heavier metal, either move to FCAW or go to the 80Ar 20CO2 mix as suggested. Either will allow you to run both short circuit or spray transfer. The higher 5 of Ar will allow you to go to spray at lower settings. Please note that the higher % of Ar will also result in a more shallow penetration. You need not be concern, if you use proper techniques and settings you can easily achieve code quality results.
Reply:Originally Posted by upononemy welder is a lincoln power mig 255....is it capable of spray or pulse welding?
Reply:These are two very good videos showing the difference between short arc, globular, and spray transfer, and the how to adjust the welder for each mode. Notice the difference in the sound of the arc and the amount of spatter. Notice the erratic behavior of globular transfer in the second video.http://weldingweb.com/vbb/showthread.php?t=13218Last edited by pulser; 05-14-2009 at 05:52 PM.
Reply:I do not understand the purpose of this thread at all.If the OP had done a simple search, his questions would have been answered in great detail. The OP obviously didn't look too hard.On this same board, Lugweld started a thread on spray and spray pulse welding. That same thread went on for three pages and, I'm sure, would have answered many of the OP's questions. Last posting on that thread was less than 24 hrs ago.Maybe admin needs to post up instructions to new posters about how to use the search feature. Just gets a little boring seeing the same questions asked time and time again.I would suggest that the OP order a copy of Miller's Student Pack. Included in that pack is an excellent Tig Handbook, along with an excellent GMAW Handbook as well as a GMAW-P handbook. I'm sure they'll answer all his questions in detail, to include applications, machine requirements and gases used. If he goes to Millerwelds.com and looks in the resources section, he'll find the information. $25 with free postage. Great deal.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:4 transfers- short circuiting, globular, spray, pulsed spray. I have the same machine you have and its capable of all but pulsed spray. FCAW it will do as well. I havent got any fears of welding 2 inch plate with what im set up at. 90/10 .045 L56. Mig is just fine for thick stuff too. id recommend if you want a nice spray for your machine on steel to go with 27.5 volts and 375 ipm on your wirefeed = or - a little to fit your style. forehand method and clean ground steel. 90/10 is what i use. that is for .035 wire too. you are lucky to have a machine that will spray as well as it does. very very nice arc control.
Reply:Originally Posted by pulserThese are two very good videos showing the difference between short arc, globular, and spray transfer, and the how to adjust the welder for each mode. Notice the difference in the sound of the arc and the amount of spatter. Notice the erratic behavior of globular transfer in the second video.http://weldingweb.com/vbb/showthread.php?t=13218
Reply:Originally Posted by El_Lloydeo4 transfers- short circuiting, globular, spray, pulsed spray..
Reply:sweet thats what ive been looking for....trying to figure out what kind of gas and settings for my machine...eveywhere else that describes it just say high settings....thanks...what the hell is an op
Reply:OP= Original PosterEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Try this link alsohttp://www.praxair.com/praxair.nsf/0...ILE/P-8126.pdfEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Some might find this video informative....There is a second video for pulsed transfer,but this covers the subject involved in the OP's original question and shows the processes most everyone here will encounter or attempt. The more involved transfer modes are more professional/industrial in nature and a lot of those here will never encounter them.I don't know that I'll ever get beyond 'short circuiting' ,but it's always interesting to learn what is involved in the different processes. I find the discussions interesting since I bought a machine that has the ability to at least 'spray arc'. The search function isn't always that helpful,without precise wording you don't always get the threads you're looking for. The link only seems to work if I pan thru the small links at the bottom of the youtube screen all the way to the right and then click on the very end of the little pics listed... If someone else can figure why it can't be embedded please fix it. (( If I double click on the screen arrow it works))Last edited by mudbugone; 05-15-2009 at 11:34 AM.
Reply:After watching the second video I decided to add it to this discussion also....It's interesting to understand the processes and the visuals help too.
Reply:Youll like that spray in alumineeummm weld it like you own it
Reply:I've been trying to locate pictures of Spray-Arc aluminum mig welding without success....considering the need for high heat and moving rapidly when welding aluminum the spray-arc makes sense from that standpoint...I just haven't found any pictures of the welds.What I did run across was a site by Ed Craig.... http://www.weldreality.com ... and although I haven't researched it in depth there are some interesting sections to the site about spray & pluse mig.In particular.... http://www.weldreality.com/MIG_welding_gases.htm Which raises some questions about the types of gases used for different metals.I'm no expert on gas mixes,by a longshot,but perhaps some here that are could take a look at the site and read the section posted above. I've heard all sorts of mixes suggested for aluminum,stainless steel.... CO2 do's & do nots with regards to spatter ......and I've got to say,that from the little I glanced over ..... Well,most of the common feelings on different gases are thrown out the window and described as out of line with the reality of gas requirements across the board...I don't know if Ed Craig is the welding gas "Guru" or a crackpot with a website... but he sounds credible and states he's had input to AWS guidelines on gases...and most of the commonly accepted(pushed by suppliers) gases aren't correct mixes or required for the metals they are intended to be used on.I'm only listing this as "food for thought" & for more discussion on the weldreality site and it's content. I found it "interesting" to say the least.Last edited by mudbugone; 05-17-2009 at 09:25 PM.
Reply:I read Ed's site all the time. I like the info and get a good laff at the same time. I've been thinking about ponying up the $195 for his manual mig welding book and DVD. Wonder if any one here has got it and if it's worth it?
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