TIG Welding Basics: Lap Joints
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- Опубликовано: 26 сен 2024
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Gas Tungsten Arc Welding (GTAW) or TIG welding, can be very difficult for new welders to master, especially without formal training. Today we are going to discuss and demonstrate some proper techniques and drop a few tips to help even the most novice of welders master the lap joint.
As with any welding process we get into, the first thing we need to discuss is the proper protective equipment for the application at hand. Although TIG welding doesn’t generate any sparks, we still want to wear a welding jacket to block out the UV rays produced by the intense arc emitted from the TIG torch. All exposed skin should be covered regardless of what welding process we intend to use and TIG is no exception. Next, we want to make sure our hands are protected. A good pair of dry leather gloves are my first choice, you want to make sure they fit really well and are appropriate for TIG welding. A big pair of bulky gloves made for Stick welding would be a poor choice as they will not dive you good dexterity to control the filler metal. Gloves made with synthetic fibers like polyester should not be worn as they will not protect the wearer from the heat resulting from the welding process. Synthetic fibers also melt when they come in contact with heat and that’s not something you want to happen while you have them on your hands. A welding cap is also recommended especially for those with thinner hair or the absence of it. Safety glasses are a must and go without saying, but I will say it anyway. Polycarbonate safety glasses should be worn any time you are in a shop or work environment. They will help block UV glare and are also impact resistant. Safety glasses should be compliant with ANSI Z87.1. A quality welding hood goes without saying but something that is rarely discussed is the appropriate shade lens for the task at hand. For the purpose of the welding we are doing today, I will be using a shade 9 as that is what is comfortable for me. For additional shade recommendations, I strongly encourage you to check out the ANSI Z49.1 Safety in Welding, Cutting and Allied Processes which is available free for download on the internet.Screen Shot 2019-09-16 at 12.56.59 PM
Now that you are familiar with the safety requirements, let’s get into the actual welding portion of this article. For this demonstration, we are going to perform a fillet weld on a lap joint using some 1/8” thick steel coupons. We are using the ESAB Rebel 205 AC/DC, since were running steel we will set the machine on DC- at 130Amps. We need roughly 1 amp for every thousandths of material thickness and 1/8 material is .125 amps. I like to add 5 additional amps just in case I need a slight bump. I will be using a 1/16” ER70S-6 Filler rod and a 3/32” E3 tungsten with a 30° grind angle. I want to keep my weld right around the 1/8 size so the 1/16” filler will give me just that. Remember the weld will be roughly 1 and 1/2 times the diameter of the filler wire. As with most TIG welding we will be running 100% argon and because I am using a gas lens I will run about 20CFH. If you are using a standard collet body you can set your flow around 15CFH or so.
Before we get into welding with filler wire, we need to understand how to manipulate and read the puddle. The best way to do this is to run a couple autogenous welds (fusion) first. Once we get the hang of welding without filler and fusing the materials together we can then add filler.
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If you enjoyed the video, be sure to give it a 👍!
Thumbs up for the tip about keeping the weight off the torch hand... that's a big one.
We like The new Bob you make a good new Bob 👍 in a way we miss Bob but your doing great
InstaBlaster.
Mann this guy is a great teacher explains like no other my hat off to you sir
Agustin Hernandez thank you for the compliment. We’ll keep putting them out if you keep watching them.
No kidding, this guy covered the basics, and then some, for those of us new to TIG... Much appreciated..!!
You guys make it look easy. As a machinist of 15 years I'm just now ATTEMPTING to teach myself to weld. Pretty tough to analyze stuff when you don't know what to analyze. For years I've heard machinists bag on welders. It's WAY harder than it looks.
I've been teaching myself to Tig the last few weeks in my spare time. This video really helped me isolate some problems I was having particularly with keeping my filler metal perpendicular to my torch. Thank you so much for such clear concise instructions!
Chuck Payne you’re welcome. Glad we could get you back on track.
As a visual learner, where was this video when I started tig!?!? Man, great intro to tig welding. Excellent demo!! 🌟🌟🌟🌟🌟
Juan Lagarde thanks man, I really appreciate the kind words.
I been TIG welding for 30 years and I learned something! Nice vid!
RMTX 25 glad we were able to teach you something. Gotta learn something new everyday.
Ive been welding for 17 years, and am having a blast learning more and more watching these videos..!
Awesome video. Give us an update on Bob please.
Man....first time I've seen you on this channel and your teaching style is AWESOME. Hope to see you in more videos in the future.
kryptonut thanks man. Check out some of the other videos. I started back in December. We’ve done some pretty cool stuff.
@@GodslilRedneck23 will do mate!
Well done! You answered questions I didn't know I had...
I love the videos that drive me under the hood as soon as they're over.
D Rickard that’s awesome man. Glad to hear it.
One of the best videos I've seen on tig for beginners. Keep them coming.
Great video. The tip about keeping weight on your butt and not letting the weight creep into yours hands is fantastic.
split150 thanks, I’ve found it’s a common problem with new welders. It makes so much sense but you don’t know what you don’t know.
Very useful. I am a welding starter at the age of 48 (never weld before), using it for hobby purposes, and these kind of vids helps me a lot. Many thanks!
One of the best videos sir thanks and keep those tig videos coming pure gold.
Agustin Hernandez will do. There’s still 4 more joints to cover and different materials as well.
I am new to welding. I have earned a lot from weld.com. A big thumbs up to all the crew. 👍
Some very good hints today. I’m seeing more and more channels from guys who seem to basically know what they’re doing in fabricating various things in different materials. But often they know little about welding, and tell people things that are just wrong. They show bad welds, and praise them, or blame something other than themselves. Sometimes they wear sandals. This is a growing problem.
Mel Gross thanks for the feedback man. We try to build safety into every episode for the hobbyists and new welders out there.
Jason Becker yes, you do.
Every weld better than the last for sure
Great tutorial. You teach like a Marine. Semper Fi.
trynottobreakit 0369 thanks Gunny.
Thank you for your time and for sharing your knowledge.👌👍
Ricardo Montes thank you for taking the time to watch.
I'm just starting, got all the cheap vevor TIG machine, the cheapest everything and I"m ready to try it out and these videos are by far the best! thank you for all the effort on making this available. Funny that you mentioned the protecting your skin. I tried my first weld the other day and my arms and hand were all sun burned in the evening and next day... I was wearing no gloves at all and show sleeve...."you learn your lesson" as you said.
J you do a terrific job! Always full of information and on point . Keep up the good stuff . Every time you post a vid I look forward to it. Always learning somthing I dont know or a reminder on techniques I do. Thanks
Donny B thanks for the kind words and your support. Stay tuned, we’re just getting started.
Thanks for the video, I am new to TIG welding. Did not know about keeping the torch and filler rod at 90 degrees.
Derrick Wilson it makes a huge difference. Especially with penetration.
That was a game changer when somebody showed me that.. wish I had learned it sooner!
Only few good instructions online. Yours is one of the best. Thanks Bro. Keep teaching.
Semper fi 72-76 I stick welded most of my life just now doing mig can’t wait to try tig.
Lol nobody ever said I can't wait to try tig 😂
Michael Smith I’m 66 years old little things excite me
Mike Painter Semper Fi Devil 01-05 tig welding is very therapeutic once you get the hang of it.
thx for covering safety \ ppe Jason you hold true to your word.
Matt B I told you, I got you man.
Good instructions. A few tips I didn’t know before watching.
Tony Urry glad we could help you out.
good to go back over the basics always learning , great video thanks for taking the time to do it
You are a great teacher, more so for us not English speaking, as your speach is understandable all the time. Is Mancub still around?
Yeah, he is still around for sure. He will be doing a series shortly on gas welding AL and SS.
Eduardo Rosales A thanks for the feedback. Yeah he’s still with us. He does a lot of the work behind the scenes to keep us up and running.
You can write down everything I know about welding and it would make an elevator button look like a major literary work; but I just love to watch this feller teach...nuf said.
coco loco thank you. Hopefully we can teach you some more to add to your toolbox.
Great solid explanation of the basics...and everything's built on the basics.
Rattlecan Fab Shop thanks for the feedback. It helps more than you know.
Exellant done,and ur explaining is really clear,i think would be easier to learn of ur channel,great understanding👍
Man, my welds don't look ANYTHING like yours. You make it look so easy. Guess I'm using the Make every weld WORSE than your last one rule. :-) Excellent tutorial, Thx.
Thank you. You are a great teacher.
Guillermo Nieri thanks for the compliment.
wheres bob? is he coming back soon? it was supposed to be like 2 weeks
Semper Fi Marine, I’m also a retired 0369, Gunny. Great video. Thanks
I wish you were still teaching at the college
John Bladykas are you taking classes there?
Great video keep it up
You are a very good teacher !
Very excellent explanation and in particular the item about being 90* to the tungsten with the filler. I will remember that next time under the hood.
Good video Jason. I liked the PPE briefing. You did however forget to mention covering up the chest and neck area. I have given myself a couple of cases of welding sunburn by forgetting to button up all the way. I have even added a leather bib to my helmet at work just to avoid future problems.
Mark Fryer the jacket should cover your chest and neck but I see your point if you decide to wear a t-shirt instead. I have a leather bib to protect the beard.
Thank you for the information. I just got over my TIG welding phobia lmao. You answered all of my questions in the video and some. Thank you man!
Just watched this video. I very much appreciate the time and help you put into making this and all other videos. Thank you very much. I’m Andrew
What happened to Bob? Is he ok?
Thank you for the informative video! Keep it up, much love to y'all
You're very welcome. Thanks for watching.
GaijinMaestro 21 you’re welcome. Thanks for the support and feedback.
6:37 in Australia we call that Chook Scratch. Nice video mate
Little Aussie Rockets thanks man appreciate the support.
Masterclass. I learn a lot from you, thank you Sir!
Excellent!! I learned a lot.
Damn, that was a useful tutorial to get started.
Brian Poi hope it helps you out.
Would you be willing to do a video on weld size and how to measure them using different weld gauges?
I do appreciate these back to basics videos. Always a good idea to keep it simple.
Seth Thomas we covered that topic in the dye penetrant video about a month ago. Check it out. We use several gauges.
Thanks Jason. I'll check it out. You guys are great. I really am glad I'm part of the welding community.
great video, i cant see why this video has dislikes..
Learned a lot. Very interesting. Thank you.
You're very welcome. Thanks for watching.
archersfriend thanks for the feedback. We appreciate the support.
I always feel like its a bad or lacking TIG weld when the bead isn't to the top of the top piece of the lap weld. Or a concave look to the bead. Then I end up eroding the hell out of the piece and get a wormy looking weld. guess i just need more practice. Travel angle, heat and filler rod size. I use 3/32 rod on a lot of work, no matter what thickness im welding on. I dont TIG a lot of heavy or thin thin gauge stuff much.
Thanks for the helpful video keep it up!
swissmochaj glad we could help you out. Try some of the tips in the video.
By far the best explanation during a tutorial I have seen to date! Every single area I go across with my students, explained in exactly the same format.. great reflection tool thank you sir👍
P.s. got any MIG/MAG like this?
Sarim Westmoreland thanks, we did a basic setup video about a month back that seemed to help a lot of people out getting their machine setup.
@@GodslilRedneck23 I shall take a look at that and again great video. I will be sure to use 👍
Sarim Westmoreland thanks, let us know if you have any video ideas that would be beneficial for you as an instructor.
@@GodslilRedneck23 that my friend is a kind offer indeed and I am sure I will be in contact over the next couple of days however off the top of my head, dropping characteristics of Alloy when doing the corner joint is one I enjoy.
May I also so your editing and delivery is top notch.. any other tutorials I have found tend to lose the student due to mono tone explanations and information that is just not relevant at that point. Well done Sir 😎
Ok...where's Bob? Great video by the way
I remember seeing a video a long time ago before I started wanting to weld where a guy on hotrod garage was teaching Mike Finnegan to tig n he had a way he held the filler rod where it was between his index n middle finger like you do but he used his thumb to move the wire n his fingers never moved. I've never seen anyone explaining filler wire show it since
Ben Miller I typically use more of my thumb too unless I get into aluminum then I use all 3 fingers.
Good content for tig beginners 👍👍
Excellent knowledge. Thanks
Good advice. Should have did a shout out to Jody for that tig finger. And I think you get a little to in detail about angles and what not. Remember you’re mostly talking to DIY guys on here. Food for thought
Excellent instruction! Really helped me!!
Thank you very much, That was helpful. You're a great teacher
We like The new Bob you make a good new Bob 👍 in a way we miss Bob but your doing great
Great tutorial
the one i've been looking for.. thank you sir
Thank you so much for the explains..very good help for myself (Beginner)
Very good instruction!!
Excellent video, feel as if have learned a lot.
Nice one.
Gavin Almeida thanks for the support.
Great vid your a great teacher how’s Bob doing
What happened to bob?
Love all the Marine references! Ooh Rah Devil dog!
Really enjoyed your video. You finished off with "make every weld better than your last", but I'm still such a beginner that my welds are sporadic, where despite my best efforts I can't make every weld better than my last. It seems the quality of my weld is so dependent on the quality of the arc, which is dependent on the quality of tungsten point (whether its dulled, off-center, contaminated, ....). In the future, could you make an in-depth video on grinding the tungsten point, as it seems so many of my welding issues are directly dependent on that tip.
Hello from Kiev!
Your an incredible teacher. I would love it if you could do a tig weld demonstration for me. I have been having a hard time fully tig welding a joint without overheating the joint and producing mill scale on the back side. It s a 10 gauge plate with 1/4” steel butted into it (T) formation. I need help with amps, and filler size. Thanks!
Bradley Johnson since your smaller plate is 1/8, you only need an 1/8” weld. The weld size only needs to be as big as the thinnest material. Use the same settings we used here and you should be fine. Keep the bulk of your heat on the 1/4” plate by bringing your work angel up just a bit and wash the weld the the 1/8” plate.
As other have said, EXCELLENT video. As a hobbyist, I love these beginner series you are doing. I don't TIG yet but I am setting up to do that. Question: Do you know of any simple quick reference chart/booklet for beginners? Recommending rod types, diameter, settings, tig setups, etc.. Something like the charts included on MIG welders. I know there are books, but you have to dig or have several different books. If there isn't any you may want to consider writing one :-)
ww_big_al there are MIG and TIG slide charts available on Amazon. Well worth the price.
Helpful video thanks
If suppose torch angle and filler material angle change then what affect on welding
Tushar ravindra Bhadane you’ll get less penetration with too steep of an angle. It can be a good thing on thinner materials.
Hi Master, please kindly tell me when should I use a big cup torch and when should I use a small cup torch?
Thanks
Well done.
Thanks for the video I've been a welder for 40 years but just started tig I practiced earlier today and finally got to run halfway decent bead I have this problem though after one bead maybe 5 inches long my Tungsten looks like crap i am not sticking it in the puddle and the metal is as clean as I can get it but I have to grind tip after every bead also trying hard not to swirl arc like oxy acet welding what am I doing wrong?
Ok smarty......
now lets see you weld with a plasma cutter!
😂
Nice weld dude
How do I prevent it from eating into the top of the metal? Less heat? Higher travel speed?
@jason decker I know you came from structural, would you take that esab sentinel out on the job? I’m on the verge of a new hood and I really want that esab but out on the job I’m not sure lol
Joshua Marcotte as long as I had a halo to attach it to my hard hat. I wore a Miller Digital Elite for years in the field. Keep it dry and put it in a bag before it goes in the gandbox and you should be all set man. Also make sure the hood goes in last so the apprentices don’t threw the chainfall and steel chokers in on top of it😂
@@GodslilRedneck23 Better yet take it home with you at the end of your shift, then if it gets damaged there is only one idiot to blame.
Appreciate the reply fella. Food for thought for sure
My bosses at work both Tig weld aluminum with cotton gloves. I double them up because I'm wary of UV light blasting through the cotton weave over the years. Can't find any cotton gloves online that are marketed as Tig gloves, what dou you guys think?
There’s a lip at top of that joint maybe a size bigger filler rod would have worked better? Just asking
Nice video, I tig'd a lot in high school and was pretty good. Recently purchased a Millermatic 220 and cannot get a good weld. It seems as if i have no gas protection,
using 100% Ag and it pops and crackles even with cfm up to 30. Any suggestions?
BTW cleaned all parts before welding, 1/8 plate carbon.
Do I look for a helmet that specifies ANSI Z49.1 to be able to set? What is your brand and model of helmet?
Nice👏🏽
Xx_unknown _Xx thank you.
Thanks man. ..
just started tig welding my biggest issue so far is dabing filler metal, I tungsten
Thanks man
I was wondering, isn’t that weld a bit undercut?
Any tips for 'fixing' start-stop traces on root when welding pipe in 6G?and how to do a nice cap:)
Very informative video. What's the name of your website, again? 😆
i got s project comming up. but then i am going to see if i can weld with my plasma cutter.
After y can weld around corners without seeing ur weld.... what else is there. lol😲😅😄😁
What a great video! Thank you for the knowledge drop!
How do I stop melting my tungsten and cup
Probably switch polarity. Or while welding alu on AC, tune balance opposite (30/70 to 70/30)
i admit
it is not likely
never know till u try
what kind of welding helmet are you using
Good stuff! My wife came in late and asked if you ever burn your beard?
The Eccentric Hobbyist I haven’t, but Mancub did once. Check out our stainless thin to thick video in the bloopers. I still owe him for that one 😂
Did you weld at 130amps full pedal down?
Has anyone taken a look at the Weldpro Digital TIG200GD on Amazon looks like a very solid welder for the price looks to be almost a HTP 221 for half the price and so far everyone I've seen who has it says it's better then most transformers from Miller / Lincoln but on par with thier inverters around the 2k mark
Would anyone be able to tell me the difference between 7018 and 9018 welding rods thanks
Dave D the 7018 have 70,000 lbs of tensile strength and are destined for mild steel. The 9018 rods have 90,000 lbs of tensile strength and are designed for low alloy materials. 9018-B9 is used for 9% Chromium and 1% molybdenum steels the 9018-B3 are designed for 2.25% chromium and 1% molybdenum steels. These a couple others but that’s the big difference.
@@GodslilRedneck23 thanks Jason I ordered 7018 to weld some steel plate but received 9018 not sure if those are suitable
Dave D I would send it back.
@@GodslilRedneck23 I think I will thanks again👍
Dave D no problem man. Good luck.