2'' Stainless Steel Root Pass Tutorial with Bob Moffatt
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- เผยแพร่เมื่อ 30 ส.ค. 2018
- Say it ain't so! We are getting closer to finishing up our Weld.com collab series with Bob Moffatt. Next week is our last post from the project but today I am helping Bob with some stainless TIG welding just like he helped me with aluminum! Hope you guys enjoy!
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Hello. I have passed more than 3000 x-ray pipe joints. But still enjoy your videos and learn from you (two legends). Big like from Iran.
Love the videos with you and Bob working together, good stuff.
this is the type of welding i do everyday. although im better at sanitation pipeline. you guys point out a lot of key techniques that you must know. another great video guys! 👊👊
They should also add that the purge pressure (cfh), can and will change the root...
You don't learn exactly what not to do unfortunately until you fail👍
Like my grandpa always said,..." your not losing, your learning ".
Cruz Welding And Fabrication
I use to use the dip feed method but now use a different type of putting the root in. I hold the wire on 1 of the walls n run the torch on both walls which makes a key whole and gives u a good root. And both walls fuse good
woot! Just saw the weld.com with y'all! Now I have another huge catalogue of awesome weld vids to get through!
Bob is the Goat of welding.
Chuy RDZ Bob and Jody
Excellent video. Fantastic you share this stuff. Thanks Michael
Love the collaboration.
Happy welding, great video
Premium tutorial. You two are great.
Damn good lesson right there thank you guys
Not sure who thought this exercise / show and tell up! but this is Fantastic !!!
Great video and discussion
My boy bob and Omar 👍
Great video my dude💪🏽💪🏽 show them boys how we do it out here in Houston🤘🏽🤘🏽🤘🏽
constantly use that rod to cool the keyhole.
Nice video, like all your :) I found somewhere it's no good to take out rod from shielding gas while you weld like that. Is that true?
Were you using a foot pedal to control the heat in this video ? Thanks Mike
Y’all should do some RMD welding tutorials since a lot of companies are using it in the field...it works good for SS no purge on heavier wall Pipe
Were you walking the cup or free hand in this video ?
I would really like to see a video of the UA-42 ER309 tig root & hot then 309L 16 stick fill & cap on 2" XXS carbon.
What size tig torch is best for doing the root. Is an air cooled no 26 too big and awkard.
I thought you guys were coming to blows at 5:45. That would certainly boost the ratings.
What kind of gloves are you guys using?
15:50 sounds like a Bob Marley reference. Nice Video
What tig torch is that?
At the end of the day 👨🏻🏭
Great
How do you fix cold wire on stainless because it's more harder then carbon . so takes a long time to suck back . If you can make a video to show brother
Legitimate question here.
So I've gotten pretty decent at carbon pipe, but never have welded stainless pipe. Why is it everytime I see someone doing ss pipe they use the dip keyhole method instead of just the normal back feed where you leave the rod in the puddle the whole time?
The stainless has an attitude.
The trick ultimately is learning how to keep her as cool as possible, travel as fast as possible, but allow for adequate penetration in the heat affected zones.
If you don't turn the gas down to 15-10 cfh when you have an inch or two left, you'll end up blowing a hole....
It's like a house having the best air conditioning for the size of the house while not spending thousands upfront and not have a $1,000 electricity bill.
Stainless does not like to get hot or stay hot.
It changes all the qualities of the metal once you over heat it.
Dip and keyhole, like the gentleman's said, allowed for the rod to work as a heat sink while having the inert gas flowing to keep the weld puddle much cooler while traveling and manipulating the torch alongside both walls to allow for penetration.
joseph cruz this was like a year ago bro, I’ve learned since and welded on methane refineries. But thank you anyways, it only took a year for someone to get back to me 😂
the pipe is pretty much overheated)))
See how Bob keeps the torch at the end of the bead, that is a habit formed by experience, to keep the bead shielded by gas, as it should be done!
What are you purging? And whats the reason to purge?
Ok thanks guys.. It really clears things up... I havent started tig in school yet and we dont do stainless... But thanks for the info
But u can allways stickweld it. No need to use any gas.
9.00 ..... what happened to your post-flow!?
How do you fix cold wire on stainless ?
You either dont do it or you run hot on your root in the place you messed up.
Best if u can have someone watch the spot and tell u as soon as the cold wire melts!
Leave a window on top and look where the cold wire is, turn up machine to like 150 more or less strike tungsten on bad spot on root pass and look through window and watch & break down cold wire. Make sure to drag off side or you will leave a fish eye
Burnt the eff up lol
Most definitely if u don’t learn ur mind becomes stagnant
man that seems like a lot of argon i'd think 15 cfh would be good
Waist of money....
Fairness 2209 falls cotait
wish to see ss no gap
a bridge tack at 12 oclock helps
Show how to poke holes...... my inner child had to laugh at that.
Poor bob always getting short armed
More practice Bob hahaha