Dual Shield Flux Core Welding Basics
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- Опубликовано: 7 сен 2024
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Dual Shield Flux Core Welding uses a flux core wire along with a shielding gas...usually either 75/25 (c25) argon/co2 or straight Co2. For this video, I used C25 gas and .045" (1.1mm) Boehler E71t-1 wire
One of the things I respect about this guy, in addition to the fact that he is an indisputable master of his craft, is that he is laconic. He introduces himself and his topic and says, "Let's get right into it." He narrates as he works and it is never inane blather. Every word that comes out of him advances knowledge and direction.
This guy should not only be teaching welding, he needs to make a video about how to make instructional videos on RUclips! I am so weary of uninformed, self-appointed experts who are in love with the sound of their own voice. ~ JSmith
P.S. Jody, I hope you are listening.
@@jsmith968 thank you
nothing more I love than hearing "hey jody here"
unless you’re on deployment
Amazing video and straight to the point , back to back , I’m 18 years old working as a seamer operators helper at the moment , and skip lunch to practice my welding skills every day , your channel teaches me more than any of the fitters and welders that I talk to , not just that but awesome quality work as well , thank you Mr.Jody .
once again I want to say how I appreciate the way you jump right in to the subject, keeping it rolling without veering into other unnecessary information that just clutters the learning process. Thank You for spending the time helping us become better welders.
Short , concise and perfectly delivered
15 years old and bout to start my first job. Cousin works as a welder and he talked to his boss and i can work there and learn how to weld. Thanks for the tips
good stuff man frfr u dont see many youngins getting at it early. Respect to you young bull.
I received one of those books from a SkillsUSA competition for welding in high-school, forgot what it was and have been looking for it for years. This short video helped me find it again!!
I love that gas shielded flux core, It has a really smooth arc, I never could get it to weld really good vertically, its a very fluid puddle and want's to fall out or sag, you did great.
This guy has single handedly allowed me to really blow through my welding class and really improve quickly, God bless, thank you Jody!
Just picked up a spool of Lincoln Outershield 71 Elite and was I impressed (of course that takes very little). I am attaching AR steel to a backhoe bucket and this cored wire is the first time through my old Miller and I,m loving it. I can't tell you how much I appreciate your videos for all the little (and there really big to me) tips and techniques I learn. THANK YOU.
I use a commercial anti-spatter spray - but ran out one day. I stole a can on PAM from my wife's supplies - it was peanut oil flavored.
I can't tell if the welds suffered, but it sure smelled good and it kept my spatter clean-up a lot easier with a lot less wire brushing.
I bought a case of PAM.
Years ago a new employee who had never used Anti-splatter spray saw others spraying something. He thought it was WD-40. He started spraying WD-40 and welding, he was so pissed when he saw what it did. Couldn’t let him go on, so I handed him a can of Anti-Splatter. He was a different welder after that day.
FCAW is just so fun to do, and getting a 5/5 (which is incredibly rare) from my welding instructor on my T Joint today caused me to fall even more in love with this field. I intend to pursue my welding career at Washtenaw Community College for 2 years before either joining the work force as an entry level welder and fabricator, or transferring out to a larger university with a more advanced welding program for another 2 years, gaining a more advanced degree and certification, and joining the work force either as an instructor or as a professional welder.
Be cautious with welding schools. I learned much more from working in a fab shop than I ever did in school. Not that they aren't useful, but it's not the only path to becoming a great welder
Spid3rmike117 I agree and all schools are different. You definitely get more skills on the job but good solid welding skills from schools won’t hurt. I definitely think you should go out and work before you become an instructor it will help you and your students. Learned so much from the old timers that a school wouldn’t know. I went to welding school so I’m for it but don’t be stuck there it’s better out on the job, really test your skills.
Thanks for the video and also the book recommendation. Believe it or not, 8 years later it’s still available, for $30! Thanks! Love your videos, so helpful.
I always enjoy some Dual shield of the E71T-1 class. Always felt like a never ending E7018 to me, and that is wonderful. Then the self shielded FCAW E71T-11 runs a lot like a never ending E6011/10 to me. Great video as always!
Subpare vertical technique, that's why you are crowning my friend. Good verbal content outside of that.
Love your tri angle got to love the fill speed
I have worked in the tank car business and for the parts of the tank cars such as the hatch and housing and lids all we used was lincoln ultracore .045 to. .052 and for uphill I always got away with a steady motion. no manipulation was necessary. we burned in at about 26 volts and right under 300 ipm and it was the sweet spot for me. this is an awsome video I've been waiting on a dual shield video!!
Thanks for the vid on dual shield. I've used dual shield a lot in structural steel shops. It's definitely not for doing car body work but it's the way to go for structural stuff. The nice thing about it too is that there are standardized welding procedures for using it unlike regular mig hard wire.
You must have intersepted my texts, I was just texting with a friend how everyone is tig welding on RUclips, and here you are posting this video. Thankyou you made me feel better about only having a mig welder. Dan.
+cosprint corner shop Don't ever feel bad about only owning a mig welder. mig welders are very flexible machines. My first welder was a little everlast stick welder. After I figured out what kind of welding I wanted to do I upgraded to a mig welder with a spool gun. Fast and efficient and if you want to do some tig welding there are some that do that very well as well. Even some with mig welders with high frequency start for tig.
+Lewis Drake Thanks I needed that. I am having fun with the mig. Practicing on my 92 Roadmaster Wagon.
I bought that book on accident when the school store employee pointed me to the wrong one but i'm glad i have it now. I noticed the James F. Lincoln book has a chapter on Welding Aluminum and Aluminum alloys with the Gas Tungsten-Arc Process while the AWS McGraw-Hill Education fourth edition Bohnart Welding Principles and Practices book does not.
We weld Heavy Equipment attachments and use Miller 350P welders with .045 flux core wire along with 75/25 gas. Our two primary settings for what we weld is 285/485 and 293/530. Were welding materials up to 4” thick and some even thicker.
the welding procedures book is a great resource, i have the red one and two other older ones.
I use Hobart fabco excel arc 71 and just go by the chart provided with the wire from Hobart. 200 amp machine, 25 volt, 340 in/min wire speed, 5/8" tip to work distance, works perfectly. Just go by the charts provided by the manufacturer of the wire itself and everything will work great. You could get a 5 year old to weld with dual shield flux core and it will come out looking like a pro did it lol
I just started my first welding job and they run dual shield hot! It's 0.064 flux core Lincoln wire with 80cf of gas 28v and 310wfs
I do .125 c channel welding with dualsheild and we run 25 arc volts with 370 ipm, you don't have to weave at all going vertical because the sheer amount of wire and heat going in just fills the joint good
Wow, struggled w/ weld quality, turns out polarity and dragging are key features to sound weld w/gas+flux core
Thank you!!!
that crown youre talking about i have found is due to that "stack triangles; give it that extra cron in the middle, ive found running complete stringers, which is faster and ends up with less heat input as your are not maniputing the wire. jrust allow the wire to drive itself in them which can create i nice flat weld. can send photos through of my welds running stirngs, at 24-25 v and about 7-8.2metres a minute
What always worked for me with uphill was to make octagons instead of triangles. Prism's work good as well.
wut
I use a polytetrahedron pattern
I have to say that you put a lot into your posts and for that Thanks . I am a welder form IL and I work with this wire every day and you mite want to try on a 3f or 4f 225 on the wire and 21.5 volts and see what that does . For any one that is just starting to use this wire your tree technique would be the way to go . It has some learning curve . I think that it would make it quicker for the ones first time out with this wire
Thanks Dennis welder form IL
Thanks for the tip on "The Procedure Handbook". I picked up "Metals and How to Weld Them" a while back and am reading through that.
Thanks you guys for the feedback and information. I really appreciate it. because I was think about weaving it all the way out because I'm doing a root with a backing strip.
I personally find that using no movement while going uphill, a slight push angle as you mentioned and only maintaining a consistent speed makes for the best weld. Granted I am just a dime a dozen $14 welder so my method may be totally off the book but in my opinion produces the best running weld. I use high heat on thick material mostly at work so my wire speed is almost never below 375 and I run around 27 volts, this goes for any position barring some multipass or overhead adjustment. I just find that my weld quality doesnt suffer enough in or out of position, but again this could be wrong in terms of going by the book.
Recently, as in the past week Ive taken to the drag rule as well after doing my research on the drag vs push debate since we just got a job doing work for the air force that will be heavily tested so Im not taking any chances. Ive posted a few pictures on my instagram as well which the older ones are funny because they are so bad compared to what I do now after only a couple of months.
at my old job we used lincoln 71a75, with the right settings you can run straight up a vertical joint and it would lay in perfect.
I just wanted to comment on your post on your site Jody, I agree the jflf books are a fantastic resource, I own all of them. I live in Canada, and I don't remember the shipping costs being outrageous, and I personally wouldn't hesitate to purchase them again if I needed to. A great resource for anybody interested in welding, or taking it in school.
Edit: I just checked it out. It was 30+38 bucks shipped to my door in Canada, UPS Standard method. The shipping cost goes up slightly if you order more items.
+Rob Tyrer Thanks Rob Bruce in Canada
Learned a lot! You are one of the few people on youtube that helped me with my welding... I appreciate you sharing you skill...
thank you sir!!!
Many misunderstand the main purpose of Dual Shield. Its purpose was relatively simple in that it prevented internal cracks in normal welding passes by applying the final overlapping pass of Dual Shield over normal structural welds to be much hotter with stronger steel grades combined with or over normal steel rods or wire passes. This enabled a combined soft centered steel within the weld while the outside final pass serves as a very hard steel coating. This final pass reheats the underlying welds removing any fractures, cracks and fissures in the softer steel passes BUT MAINTAINS THE SOFTER METAL CENTER FOR NORMAL "WIND/BENDING" FLEXIBILITY TOLERANCES. Dual Shield Dual Pass methods.
Ships, Submarines, Television Towers, Water Towers, Pressurized Gas cylinders, catwalks, ladders etc. all depend on it. That final pass is applied usually at a very high amp heat setting and is a law in many states after a television tower collapsed killing a work crew years ago. When high winds from bad weather and or pressures increase inside tanks,, this process allows the structured steel to still maintain it's FLEXIBILITY and yet be very strong outside to absorb the flexing motions within the steel.
You will see this being applied also to Tall Pipe Grain Elevator Legs, Fire-escapes and entirely in ship building even though nobody really understands the reasons for different rods for different passes. Some computerized mig's now are rigged for 4 wire grades that all can weld 4 wires at the same instance. Two inside lay the center pass normal wire as two outside wires in Duo-Shield overlap when the 4 tip is zig-zigged back and forth over them as the machine self welds all 4 wire-fed wires.
Also the main reason normal steel is used underneath is that Dual Shield alone is too hard and can cause structural steel to become brittle inside and break. Why soft grade steel is applied first and possibly in several passes before the Dual Shield outer is applied. Nuclear Submarine section connections also dangerously rely on both.
Another sad fact is that anywhere a tower falls, a water tank collapses, or a tank burst or a crane collapses,,, they did not follow these methods. It kills people folks. And for small welding work the Dual Shield is used singly in welding ship chains, drag chain conveyors and some tools where steel hardness is relevant.
Besides Dual Shield Dual Pass methods Single pass methods examples i have overseen personally are military tank tracks, road graders, Hammer-Mill blade tips, feed-mill ribbon mixers and massive gear teeth repair. It is this massive heat generated by the Dual Shield either in rod or wire that has an effect of Heat Treating the steel as it welds. This makes it a much harder stronger weld but sacrifices flexibility in exchange for brittle strength.
Just picked up that book, as well as Metals and How to Weld Them, and GTAW Guide book, thanks again for great info Jody
I know this is an older video, but still a great video to learn from. I’m newish to welding and your video is one of the better one. Showing what you’re doing while talking about it, great way to make a video. Other people’s videos could be better if they just did that. Thank you for your tips.
Great video!
I'm currently in welding school doing my groove welds practicing for my CWB tickets. For horizontal I'm running very similar settings: wfs: 280 volts: 23.0 with 85/15 gas. Or I'll use C02 for better penetration and using wfs: 300 volts: 26.0-27.0. Keep the videos coming! Cheers from Canada
Nice, I was always told that using flux and gas was a No No. This explains alot.
great video! I always run tri mark or lincoln 71m dual straight.. 3/4 stick out no weaving at all! seems to burn in great. I weave to and increase stick out to reduce heat if it start to get hot.
Thank you for another great video. For me, these type of videos serve as a really good refresher now that I'm getting back into the trade. Great stuff! Keep up the good work and thank you.
in my experience the slower you go vertical up the bumpier it will be due to the relatively longer molten state compared to short arc. it also helps if the fitup provides a little gap for the weld to go to when going vertical up. I I get better results using stringers going hot and fast versus slow and and hot for a less distorted appearance.
I used a side to side pattern similar to smaw on my dual shield fluxcore 3G certification test and it worked for me
Hey Jody thanks for the book information I just ordered one. For reference here it is July of 2020 and the book is still $30 to the foundation
thanks for the vid. can't wait to see u post some on doing GF weld test plates with backing.
we use fcaw for position welds at work mcaw for the other 90% personally I usually run 24.5-25.3v and 300-380ipm when I'm using fcaw. slight side to side as I move up on the verts.
biggest thing I find is to keep your travel speed and weave consistent and u will end up with sweet welds.
im not sure of the part numbers but i used a long contact tip style and the mig nozzle i replaced with one that would give you perfect arc length by just dragging the nozzle on the material.
Thanks! Personally, I used E71T-1 (1.2mm) FCAW-G wire with straight CO2; 23.5v; about 6.5m/min feed speed, and got good looking results. Seems to me: 1.FCAW-G is less smoke 2.easier to get better results for me than bare wire. 3. less noisy.
You are still the best Jody ;). I've got a lot of respect for you.
God bless you!!!
Great video but as a Flux Core welder I want to give a tip. Don't get into Flux Core production welding! If you do, DAMN SURE DON'T DO IT IN TEXAS! .045 and maybe 1/16 is ok but 3/32 plus a 60 lb spool of wire added with 102 deg. 80% humidity 12 hr day times however many days are in the schedule will wear you out!
Amen ,, on long & hot ones in midst at moment, thanks to 2011, I can manage to be mildly miserable
With the right settings you can just do an 1/8" to 3/16" quick wiggle and it'll come out almost as slick as 2F. I use 24.5v @ 235ipm with 75ar/25co2
thanks for the video! I was trying to look back to past videos because I'm going to take a welding test for a job that they weld allot with dual shield. never tried my hand at it before but I'm feeling more confident. I figured it wouldn't be that much different than Flux core or Mig.
+figifister it is fluxcore, just with shield gas in addition to the flux in the filler wire.
+taylort123 for sure. I wonder what the benifits are of using dual shielded Flux core...I would assume you could weld thicker metal for longer periods of time as apposed to stick welding where you have to switch sticks? why not just mig it?
+figifister dual shield has a higher deposition rate than mig so you can lay down bigger welds in a faster period of time. also the use of shielding gas with co2 creates a hotter weld, also allowing for a faster rate of production. the same principle goes for mig as well but you dont get the cleanliness in the appearance really. you can lay down a clean triple pass whereas with mig it might take 6 passes to fill the same weld.
+taylort123 cool, thanks man. that makes sense.
+figifister i edited it with more info. really it comes down to code and the field in which youre doing production for that determines what process you use
So I am in a welding course at my local community college and the instructor had me welding lap joints with dual shield flux, but its not turning out well even when I've been doing it for the last few weeks so I should be getting it right but im not so he referred me here.
Thanks for the info, your always my go to. Hope to see you at fab tech 21
Thanks for the tips Jody helped me pass a test this week
I don't whip on uphill welds with dual shield. Usually I just do multiple passes and it lays in nicely.
Great informational video Jody and thanks for the heads up on the book. I have the 211i Thermal Arc and paying a little extra for a good book is ok with me.....
I use an almost LOW spray setting with 75/25 gas and .45 esab dual shield, 25.5 and 315 for my ups, assuming it’s nothing structural. All around though, 26.5 and 432 is our “structural” setting. It’s a very quiet process. 26.5 and 432 can be difficult going up if you’re only doing a short bead though. For me anyways, I can weld 14” stiffeners all day long and they look great but I weld like a two year old on a 3” uphill bead 😂
thanks for the video and great products at the store Jody i love and use everything i bought daily. just wanted to thank you
Great video. You are correct sir the triangle weave as I call it it the best for dual shield when running the root at least. A zee weave can be done for the remainder or even stringers if you like. An inverted V weave works best for hard wire when running the root for the exact reasons you stated for both. Great information in all your videos. Keep up the good work as always. Do you have a donation link so people could help support your efforts to provide quality videos with high quality information? Thanks again.
Learn something new everyday!
u can get APS on your phone that are very good and free for welding tip and different positions
When doing verticle do weave motion works and looks alot better.
I’m having a serious problem cold rolling on a 5/16” weld. I’m laying a light pass (less than 1/4”) under the 5/16” to get the size correct and it fuses fine on the top but the bottom is horrendous. I’m not sure if it’s my heat, angle, wire feed or travel speed. I’ve tried pulling, pushing and oscillating and I still get the same awful result. I’ll also admit that my stick out is a bit too far.
Great information thanks jody, i love the procedure handbook as a reference while I'm taking my welding classes, the JFLF is a great resource for information as are your videos.
Just drag it up ondual shielded 3g but for mig you can manipulate but run through the middle and pause on the sides let it build you can aslo get flat profile
I would love to have seen the depth of penetration/acid etch on these, maybe future video?
+Scott Wisor I wanted to test them but I just ran out of time...but will try to do the etch test on future videos.
+weldingtipsandtricks
Thanks for your videos.
You can subtituled videos spanish?
Sorry my bad english
+Scott Wisor Should look like 7018
+weldingtipsandtricks Mr. Jody, I tried this technique using my lincoln pro mig 140, nr-211-mp .035 wire with 75/25 and all it did was make a mess with no penetration. I turned off the gas and it worked great. Ideas?
nr-211 is a innershielded flux core you dont use gas with it
Thanks for finally doing a flux core vid
Hi Jody, thanks for all your videos.
When would you use duel shield welding and why? Thank you
800 ipm going uphill is gonna give you some fancy new shoelaces.
Nice!! Always hated mig vertical.....puddle always ran away on me........arrrgh..... didn't weld enough to know better....... Thanks
Jody, your red subscribe arrow is pointing to the lower left but the subscribe button is on the lower right side.
Got the book good info in the uk we are 1mm in general so a.bit of maths to get the settings but I like the book
Good ole MAG welding (with the 100% co2 )
Hey welding tips and tricks can you do a video on different welding motions and showing you how to do it correctly in the wrong way
Been using 3xp fluck core in work recently making barges with the verticals I just go straight up no weave or flick seems to work best for me
Hi sir, I am going to weld the tubes of my 1977 14 bolt rear end to the pumpkin
I drilled into a section I will be cutting off in the future and I got one inch squirly shavings
I think that tells me it is cast steel not cast iron. I
I prehrated a practice axle to 400 and used .035 weld wire and colled slowly while reheating the cooler spots so it came down evenly and beat with a 20 lb sledge and no cracks. My friend said I should use 045 dual shield but I already have some 035 dual sheild flux core. Should I try the 035 or buy 045 or just stick with regular 035?
How about some overhead? Talk about "no motion", I am reaching in between pieces to weld at the bottom of a 1/4" wide groove 1/4" deep 12" long. It is very difficult to keep the wire in the middle and get complete fill. A big problem is when spatter shorts between the tip and the gas lens and it all goes to !#! if the lens touches the work when following the grove. I know, all I need is a 6,000# welding positioner but I don't have one.
I loved using Dual Sheild FCAW , It always felt like pouring thick chocolate milk . super smooth and had great "wetting" action . I still dont get why most of these machines that start with a 2xx , dont have dual rollers , I hate single rollers .
+Rockland Kcorvic Single rollers are a pain. Even Everlast is going with true 4 roll driven rollers.
really ? That make upgrading a dilema, I run of generator power alot so the older transformer machines are were its at , but a low priced dual roller setup, hmm I might rent a trencher and run power to out the out buildings .
Jody- Can you comment on "wormholes" many experience with FC and dual shield???
Thanks!!
What would your settings be for 5/8 plate with same wire? I did some wity .035 hardwire a few weeks ago at 28v-450 and it sounded almost like spray arc.
Thanks for the sweet tips. Your input on the wire speed and voltage changed my pool tremendously I didn't realize how touchy this motherfuckin flux core is
I think I'll have to grab a copy of that book. Hey I got a question, is there any charts or books that explain to non-engineers the size and thickness that beams, c channels or RHS can span if you are building things like Gantry Cranes or spanning roofs etc. ?
+MotorcycleTherapy I hope I explained that right. So if I wanted to make a Gantry Crane that was 3ooomm W to hold up 1 ton of weight, if I used 6061 T6 Aluminium I Beam, the charts would specify what thickness. Same goes for Mild Steel, or Stainless etc. Would be a very handy book
+MotorcycleTherapy Go to an engineer theres no arguement about this. with a ton of weight you want a engineers specs of material especially with aluminum and in a critical application such as a gantry
Thank you, appreciate the info. I think I'll pay an engineer to give me a scale of material boundaries from a selection of sizes and that will give me a good reference to stick to.
Hy man can u tell me what the settings would be for an analogy stick machine with a briefcase would be for vertical and overhead
do a little oscillation and the start with a low creeper speed then drag upwards
That book is worth it!
So, been awhile since you put this up, one thing I've noticed is that DUAL SHIELD requires a LOT of Volts... right? I bought an Everlast 230i mig and "they say" it's not recommended for "dual shield" welding because it too low power for "dual shield" even though it mentioned in the manual... I R Confuzed. Maybe there is a .035 E71T-1 wire that would work ok? ???
I just took a 1" 3G test with dual shielded flux. The only problem I had was I was carrying more metal at the top so I was filling the top of the groove faster than the bottom. Could that be due to a changing gun angle?
Lots of fab shops around here run dual shielded flux core. I'm surprised there aren't more videos on this process. I hope you can do a small series on GFAW-S; dos, don'ts, trouble shooting, and options for home users.
When u go vertical UPP. Just go strait up no wiggel. Or go side to side.but you have to go mutch slower then u do. I promisse Your weld will look so nice u Get tear in you eyes. You should test And se how slow u can go dual shield handles a lot before IT go south. I have been welding dual shield for 13 years. And we USE 82%argon 18%co2
23 volts? 29 volts seems to give the best hissing spray transfer for me and 330 ipm.
The puddle fuses the sides very nicely and the weld finishes glass smooth. I don't see any porosity or worm-tracking. I am butt welding 1/4" wall 7" square tube to 1" plate for a tile plow hitch on a D-7.
Am I causing some other problem running so much hotter than you?
Would love to see you test one of the JASIC tig machines! They offer very cheap AC/DC TIG machines
also is the chart reguarding polarity for the flux core wire correct if your not using shielding gas and just using flux core by its self
weld test tomorrow, thanks jodi!
I'm about to start a new job using 1/16th flux core dual shielded wire. I passed the weld test but it was done in the flat position and even just doing flat I could tell a huge difference in using 1/16th wire compared to .035. There's a lot of vertical up at the place I'm about to work at too. Would the vertical up techniques that are applied using .045 wire in this video be similar to 1/16? For flat I gave it no motion at all.
A bit off topic, but I'm wanting to upgrade my chop saw, I've got a nice dewalt chop saw. I would like to get one of the carbide/diamond cutting blades that is meant for this type of saw, a high rpm saw that is meant to run with the normal abrasive blades. Any experience with these types of blades are they worth it and do they really last as long as they say? Approximately 25x the life span as compared to an abrasive blade. Thanks to anyone that might have some first hand knowledge.
What year was that book published? My 1973 12th edition doesn't have that specific chart.
Can you perform groove vertical position using fcaw please?
Hey joedy can you make a video about vertical tig welding because I'm haven problems with I light up an able to walk it one time an I have to go resharpen my tungsten
you put out some great tips today
Do you think a 90 amp stick welder can build up (talking like 8 pounds) of metal with 3/32 7018 rods?
I have the time.
+nickwoo2 I never had luck running those junk low power units . Find your self a used buzz box Lincoln tomb stone , or watch CL for gensets - I got Lincoln G9pro 250 with a trailer and tool box for $700 4 years ago .
Does the sane volts nd wire speed apply to stainless fluxcore ?