AC TIG Theory
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- เผยแพร่เมื่อ 21 มิ.ย. 2023
- The deepest deep dive on the internet about why we use AC to TIG Weld aluminum. In this episode, Justin from The Fabrication Series covers the unique features of aluminum, what each side of the wave does when welding, the history of waveshapes, and balance and frequency settings. It's a ton of detail and it's only on Weld Coach!
Want to book a one-on-one class with your personal instructor? Check out weldcoach.com
I've never come across such a in depth, yet easy to understand explanation of AC welding. Thanks Justin.
I’ve been a self taught welder for over 30 years and recently picked up an inverter machine. Wow! Your video explained more information in a few minutes than I gained looking at other sources for weeks, thank you!
I have been a Paid welder since 1983, (Retiring in 2024). This is the most accurate and best informational video I have ever seen on the internet. FWIW. Excellent.
As someone just getting back into tig welding after 15 years of not welding, this is the best explanation I've ever heard
Absolutely GENIUS….. thank you Justin. Best 30 minutes of Welding Aluminum 101 on the internet. 👍👍👍👍👍👍👍
I have to agree with others in the comments, this is the best explanation for Aluminum TIG welding. As a person who learned to TIG weld at one of the oldest Aluminum Boat manufacturers in the US, using very old machines Miller Dialarc 350, at 60 hertz was a challenge. I got fairly good, and then my machine broke. The loaner machine was an inverter Miller Syncwave 200, it was amazing the difference in frequency and wave control. The size and current requirements made the machine so much better. I appreciate you taking the time out of your busy schedule to make all your videos. I've been following you quite a while on TFS. Keep up the great work! 👍
For sure, but I just watched the wraith from back in the day and i swore this guy was a dead ringer for a family member of skank. Any relation? I had to ask
My uncle told me this guy don't know jack squat
Some people just have that natural ability to teach, as Justin does. I am sitting here learning what I thought was impossible to learn. Great job Justin, keep feeding us the info.
I was taught once that to master a craft you would have to be able to teach it where people would understand it easily. You have mastered your craft.
I’ve been Welding for 20+ years, went to an AWS Accredited Welding School back in the day that was very in depth. They even taught Metallurgy in a very deep sense, and this is still the absolute Best Explanation I’ve ever heard anyone give on A/C Theory as it relates to Welding. You explain this stuff in a way that everyone (at least anyone with a moderate amount of common sense) can understand. You would make a World Class Welding Instructor! Well, actually you are already, because you’re here Teaching everyone for Free, which is very commendable.
I have followed your TFS Channel for years, and I must say this new Channel is Perfect for people that want to learn to Weld, and people that need to re-learn, because they just got lil snippets of info from various TH-cam channels. I have people asking me to teach them to Weld all the time, I will send them here, and to your Website, which I’m getting ready to head over and checkout right now.
Just want to say Thank You for what you are doing for our Industry. It’s badly needed. Keep up the Great Work!
This is the single most comprehensive, easy to follow, useful video on TIG I have ever seen. Thank you and the team for putting this program together. 🤘
Too bad I didn't find this when I first started welding. This was amazing! Can we get more of these type of videos on different subjects in welding?
I learned as a scratch and burn tig welder and once I got my inverter all the settings had me baffled. This is the best breakdown I've seen and it will help a lot.
That was the best Tig video I’ve seen in years
This is the best explanation of this process I’ve ever heard. Great job Justin! Thanks again!
This is the best AC TIG explanation I have seen on TH-cam. Thank you for the deep dive on this. You're not afraid to tell people how this stuff works and that's the sign of a great teacher.
This video is essentially EVERY thing aluminum Welding parameters Justin . I thought you others were great, but this was about everything combined .
Thanks so much, this is the best explanation of AC I’ve ever witnessed. WOW, just so impressed how clearly you broke all this information down and even explaining why we’ve always considered Aluminium (🇦🇺) welders the veritable “gods” of the craft. 👏👏👏
I worked at a government job, tig welding aluminum with a25/a50 with advance setting..and let me tell ya, those were fun time figuring out my setting! This is such a nice refresher
This was such a good explanation behind the theory. Can't wait to see more videos like this.
Electrical engineer here - That soft square wave makes a LOT of sense to me. The sharper the edges (technically the shorter rise and fall times) are, the more extreme high frequency energy will be produced. I mean high frequencies into the kilo- or even megahertz. Your cables and workpieces are antennas so you will radiate those high frequencies out. The FCC (Federal Communications Commission) puts limits on the amount of radiant power your devices can produce. You've seen the FCCID stickers on your electronic devices - It's that FCC. Rounding the edges of the square wave will be gentler on your electronic switching elements as they won't have to deal with high frequency noise, and your neighbours will be happy as you won't be interfering with their radios and cellphones.
Came to say this (Electrical/Electronic Engineer). The HF spikes will also run into very high voltages and can degrade insulation, though on a welder it won't be as bad as a large industrial motor. But definitely agree with you that the soft square doesn't seem to me as being just a sales pitch.
If I had the ability to force change in the Field of Welding I would make this video:
THE INDUSTRY STANDARD
Have manufacturer manuals and packaging include a QR codes that link to this. Make this a 2 part video:
“Introduction to Welding Aluminum: AC TIG (Part 1 of 2 - Theory)”
&
“Introduction to Welding Aluminum: AC TIG (Part 2 of 2 - Application)”
A fantastic job, you break down normally tough to explain subject theory and cut to the heart of things. Outside the actual content what really impressed me was the professional editing that made the transitions seamless. A raised glass in recognition cheers 🍻.
Wow thanks my welding has gone from zero to hero my confidence and workmanship has gone through the roof really great vid has filled in the grey areas no one else had the answers I was looking for . Thanks so much👍😎
The clearest explanation I’ve ever heard on TIG aluminum
Been welding for years and haven't had it explained like that. Keep up the awesome videos mate
Very well said, Google has been trying to force this video on me for two weeks & I finally gave in. I'm glad I did. You earned a subscribe.
great explanation! I've seen and know the AC frequency and had a grasp of what was happening. I've seen the square wave illustrated on machines and in literature. But you are the first one to successfully pound into my head what the difference is and why it's important in the oxide cleaning function! When you said the part about the time at the peak current, it finally hit home and now I get it! Thanks.
Thanks! It's awesome to see the AC TIG parameters so clearly summarized.
Best tutorial I’ve seen. Now if I can just remember it.
Thank you so much for this video! I've recently started tig welding Aluminium & have fumbled my way through some projects, slowly getting better. This has been the best explanation of the settings I've come across. I will be watching this again once I've let it settle in for a while.
That has been the best short introductory video on the complicated matter of aluminium welding I have ever watched , amazing !
Best explanation alot of detail but still simplified for beginners aswell must see even for experienced welders to recap
Justin, you have a winner here; awesome transition. Best of luck with this much needed endeavor. And as usual, great content.
Brilliant Justin..... Expertly Describes the whole of A/C welding, what's happening, how it's happening and why it's happening... This is one of those videos that I will keep coming back to, keep revisiting, learning and understanding. I thought that I understood A/C welding but I'd only just scratched the surface. Brilliant teaching and it's certainly made a lot more sense to me. Thanks 👍😁
This was very informative, I originally done my first aluminium TIG weld on a welding machine off the Ark it was a 3 phase machine the size of a small fridge with knife blade current switches and a built in high frequency unit. It was a stick weld machine with a water cooled tig hand piece. The workshop I was at used it for cylinder head repairs around corroded water galleries. This was in the early 90’s and it was a hand full, no foot pedal just what you set. I have not used tig since leaving that shop in mid 90’s but with what I’ve just seen on this video that the new machines though they look complex with all the adjustments are easer to use and will give a better finish. I just thought that these young blokes with these modern toys are magicians. You sir have sparked my interest to tig welding again.
Miller Goldstar?
@@dolphincliffs8864 To be honest I don’t even recall seeing a name tag on it. Was very old and used but still operated fine.
Awesome recap Justin. Love how you tie everything together. Very helpful.
I've been doing NDT for a living for 28 years and just recently decided to learn to weld for home / hobby uses. This video explains some things I've heard before but in a way much easier to digest. This is gold.
Great video man, super easy to follow. Way better than any class I took while learning. Thank you!
Well done and nicely articulated! Cheers
This is one of the best explanations of how to set yourself up to begin Aluminium welding. Understanding the theory behind the controls enables you to work out the settings that suit you, your machine and the job. Nice work
Excellent video, many thanks for posting!!
Thank you for this. I taught myself to TIG weld based on books and video resources. Then I put in the hood time to be 'ok' at anything DCEN. Aluminium became a huge frustration, so I put in on pause until I had time to get professional training. This video has filled in some key gaps & motivated me to try again.
P.S. I have personally seen very early heliarc welds uses in aerospace application. We are so lucky to have the technology now available.
Bro you are a PHD in aluminum welding coaching. Thank you very much I have a much clear idea of what is going on now. Greetings from Bolivia. Once again Thank you!!!
The audio edit at 22:14 was amazingly well done.
You are really a good speaker and teacher. You have all the good ideas. You explained your ideas and supported them with illustrative examples in a smooth way. I really enjoyed that I did not miss any sentence you said. Your follower from UAE.
Thank you and forward my friend Justin. With the utmost respect and appreciation ..
Great video. Indeed, I thought I knew enough already and still found this video very useful.
This is definitely one of the best most comprehensive explanations I have seen.
Good explanation. I have very little tig experience and almost no experience with aluminum, this is a great video to watch before making globs on coupons. Thanks for this type of content
Best informative video I've seen about anything ever. Period
You made it simple to explain and even easier to understand. Now I know what the settings on my machine mean. Tyou !
I learned to TIG aluminum with an old Hobart transformer welder in the late 80’s in college. It wasn’t impossible, but definitely a challenge. Can’t wait to get a modern inverter when I out together my retirement fab shop.
I’ve been following you on TFS for yearssssss and just now found this channel. This is hands down the BEST and most informational video on Aluminum welding I’ve ever seen. Well done, man! You are the one I always seek out when I need to know something about a process. You break it down for us normies that don’t know the actual “theory” behind the stuff we’re doing. It’s like playing guitar like a champ, and then finally learning how to read music notation. Whole new ball game. Shit, whole new ARENA. Thanks for always helping us out! You’re the bestest! 😂
This was an amazing video. The best I’ve ever seen on or offline. Very thorough. Thank you very much from all of us!!!
As someone with no formal weld education or training, but is learning to weld thin aluminum, this video was very helpful.
Awesome video, have never had it explained so simply before. Very helpful information
The only video that I found so far to explain this and make it understandable. Thank you!
Great training on theory and practice
Wow what a great video !!! I’ve been TIG welding aluminum for 20 years and I’m a huge aluminum fan boy . I thought I was an expert but I learned a lot in this short video .I thank you truly and I’d like to pass some information back to you . Some fun facts that most people don’t know about aluminum are as follows.
Aluminum is made up of over 170 common elements and only exists in rare and small quantities . Typically it’s found around lightning strikes and volcanos and is prized by royalty for its blueish hue.
Aluminum is also found at UFO crash sites . Small components as heavy as iron where found and examined. They found that all the microscopic crystals were perfectly aligned creating the hardness and density.
Thank you for your lessons from a new subscriber!
Subscribed and saved. This is the best introduction to tig. You gotta start here and understand it before you even buy a machine and think you are Zeus with a trident on aluminum.
Great course! Excellent point on not loading the pedal
Great explanation. I get these questions all the time. This eliminates the “brain fart” when you explaining it to someone.. thank you
This is the best information ever. I am almost 80 years old and started trying to weld aluminum with oxy acetylene. I had an old friend at the time who could do it easily! Not me so I bought a high frequency box for my sears cracker box and had a little success and a lot of failures. I now have an Everlast machine and it has all the functions I will ever need, but I have been wandering around trying to find good instructions. This will help me more than anything I have found. The explanation about the pedal use is the thing I believe will help me and my shaky limbs the most. Thank you for sharing and wish you steady hands and good health!
You are really good at this. THank you.
As a beginner, I’ve watched so many of your videos on TFS and I love how you made everything made sense to me in this video, now I can go back to the other channel and feel like I know what you were talking about now. I feel motivated to pick up the torch and start learning again. 🙏🏼🙏🏼 Awesome work Justin!
Best welding instruction video I’ve ever watched.
The best educating material on the internet. You explained everything about tig welding. Thank you!
Your the Man!! You have made understanding so much simpler than any book or teacher has done for me!!Thank you Justin!
The best discription I have ever heard, or seen. Thank you.
You truly just made me understand AC tig welding.
loved this Vid, all stuff I've heard before on various channels but presented in such a way that just makes it sound basic instead of bamboozling!
Unbelievable! Thank you for all of that simple explanation that was easy to understand
Thank you ! Very informative !
Great job Justin,
Old school guy, I was taught on a Lindy transformer machine it was huge.
Now have a Miller Dynasty.
Great machine, but there are many great machines more affordable for most of us.
Awesomely helpful. Thanks for all this. Love the new channel.
I appreciate the advice man. I don't ever plan on welding as a trade but being in maintenance I'd like to be able to make aluminum repairs every now and then.
This is the best explanation I’ve heard in a long time 👏🏼👏🏼👏🏼
Thanks! I did not pay enough attention to my teachers when I had the opportunity. Till now I just winged it, but now I will weld with better knowledge why I choose my settings.
It is a lot of information, as you say, but presented in a way that is so easy to understand. Thank you!
Excellent lesson, thank you! Coming for training would be wonderful. I'm early in the TIG welding journey.
Many thanks Justin! Thank you for sharing your knowledge! This is the best explanation and most detailed of the AC process and in such a understandable language! Best YT video period! Keep going!
Something I found with the Syncro Wave is that with lower amps the closer to 55% balance can be ran, for high amps (300+) 75%-80% to keep the tungsten from blowing.
Just wanted to thank you for the most comprehensive explanation that I've found thus far! It hits on all the necessary information and doesn't complicate it with other information that isn't explained here!
Great Video I know I will watch this a couple times!
Great video..as usual. Never really seen a bad one from Justin. If you were over here in Australia, I would without a doubt take one of your classes.
bar none the absolute best and most thorough explanation video on AC tig i've seen so far.
Great man as usual! Awesome detail, presentation and explaining.
Watching this made me hop over to Weldcoach website and get on the waitlist. I bought a PrimWeld TIG machine based on TheFabricationSeries a couple years ago and ...well....I need a coach lol. Loving this kind of material.
This video is priceless condensed knowledge, really amazing stuff! You deserve way more than 9k subscribers :)
Fantastic video, really helps further the understanding of AC tig
Awesome, thanks. Didn’t realize the difference in the core and oxide layers. Explaining the benefits of square wave was helpful also.
This is THE most helpful video I have watched for getting started in tig welding aluminium.
Thanks Justin, I'm an electromechanic and I work with the current every day. Now I got a TIG welder to do repairs on aluminum pieces. This video really clarified what the parameters means.
Great job explaining this in a clear and easy to understand manner, even for someone who has 0 experience.
No shit.. it's finally happening!! Good deal justin.. youre classes gave me a career
That's so awesome to hear.
Thanks Justin,
Especially for the metric references.
Triangular waves are usually called saw-tooth waves in the electrical industry.
Awesome video and a really good watch.
That is not exactly correct.
Triangle waves rise and fall in the shape of a triangle, with the up angle being the opposite of the down angle, creating a triangle shape.
Saw-tooth waves are asymmetrical.... it's kind of like a triangle going steadily up on the rising edge (on the left hand side of the graph), but then severely dropping down at the trailing edge (on the right hand side of the graph) in the same way a square wave immediately drops down (the difference is that the square wave ALSO immediately shoots up on each following rising edge). This might make more sense if I could include a sketch.
Triangle = steadily build up, build up, build up... peak.... then steadily fall away, fall away, fall away. Repeat...
Saw-tooth = steadily build up, build up, build up... peak... then DROP IMMEDIATELY... build up, build up, build up... etc...
Both types of waves have straight-line rise-times that increase up to a peak (which is a sharp point), but they are different after the peak.
I can't say whether the author of this video mix-matched the names of the wave-forms, or maybe the welder company literature does so... but there is DEFINITELY a difference between Triangle waves and Saw-tooth waves. Especially in audio electronics.
And also those waves will definitely be different for the amount of energy in each type of wave (and also different from a sine wave and a square wave), AND ALSO will definitely be different in the TIMING of how that energy will transfer to melting the metal (in a similar way as to how it was described in the video about how the sine wave and the square wave have different timings on how they convert the electric energy into heat energy to melt the metal)
Thank you so much for this explaining on welders and the theory of them as well as breaking down the aluminum
Appreciate your time and knowledge. Can’t wait for more to come on both channels. As well a weld metal on line love the products I have received
Excellent AAA+++
I've been following you on TFS and now here also, love your priceless information.
I been welding for more than a decade although just starting with tig. You have inspired me so i bit the bullet and got myself a tig and ready to start practising.
Big ThankYou from Aus.
Thanks Justin 🙏
This is easily the best explained video I've ever seen on ac, and tig welding in general. Every point made sense and definitely helped me understand the waves significantly better. Great series here, just watched them all
Love the channel sir, i am not a fabricator but I do some welding in my down time at work, your work motivates me to want ti do more welding and fabricating in the future, keep it up brotha!!
Added this channel as soon as I found out about it. Very good info and presentation.
I've been away from welding for about 25 years but but I'm getting back into it. This tutorial was a great refresher and informed me about some things that have changed.
I think the last machine I used was a Lincoln IDEALARC TIG 300/300. So you're saying that I don't need to ball up the tungsten anymore? LOL