I guess that would be me, Mr. rjacobs, whom you say doesn't know what the fuck their talking about. So, I guess I'll just have to scroll through your ignorant drivel and make some comments.............if ya don't mind. First, I guess I should qualify myself, Your Highness, as knowing a little bit about welding and having ran a couple beads. Many moons ago(just after high school) 35 years ago I worked in a offroad fab shop and learned how to weld, then moved up to the shipyards in San Diego (NASCO, Continental Maritime, Soustwest Marine and Pac Ship). In that time I ended up as a certified Journeyman Ship fitter/ welder, certified Pipe fitter/welder and Journeyman sheetmetal fabricator/welder. I was certified D1.1 unlimited for plate, pipe and box. Certified API 1104 for pipe up to 36'', stick and TIG. Certified ASME title IX boilers and pressure vessles, stick and TIG. By the time I left to get into Commercial Diving, I was the general foreman of the structural group that consisted of all three trades. I was in charge of every welder/fabricator and fitter and at times, that was thousands of people. In the Commercial Diving industry here in the gulf I once again got into welding, which was underwater SMAW and dry hyperbaric SMAW/TIG. I did testing for R&D on different flux compounds for the wet welding at different depths, qualified heat batches of TIG rods, WPS's, PQR's and WPQR's. Everything over a 1 atmosphere change in depth required a whole new set of quals. In addition to that I'm a level II NDT (MPI and UT) and certified B5.15:2010, which means I can shoot and interpret X-rays of welds. I also taught the welding school at work (topside, wet and hyperbaric) for years. So to say that I don't know what the fuck I'm talking about I find rather funny. I've done welding jobs all over the world. Now days, I just build my own shit, correctly.
THE OP'S PICTURES ARE OF TIG WELDING NOT MIG WELDING.
So, if the OP's picture is of TIG weld, the welder is worst than I thought. I'd really like to hear why you think this is so. Can you say with out a doubt that we're looking at 4130? Or would you think that there might be a better chance that it's 1020 DOM?
All of you talking about "cold weld" and "string of tac's" and "shoulda gone uphill" obviously dont know WHAT THE FUCK YOU ARE TALKING ABOUT.
Again please enlighten me oh wise one. Is it the running too cold your happy with? Maybe it's the lack of penetration that gives you that warm fuzzy feeling? Or could it be that its not one continuous weld that gives you wood.
Those welds would not pass tech even if Helen Keller was running it.
You arent allowed per most rule books to MIG weld a cage, got to be TIG welded. Do people do it, yes, but its not allowed in most cases.
Tell me what EXACT rule book you get this bullshit from. I want to here it from your mouth and see it for myself. Because it sure a fuck isn't in the NASA CLUB CODES AND REGULATIONS 2015.3 EDITION. https://nasa-assets.s3.amazonaws.com...282/2015.3.pdf
. And by the way, that would be Section 15.6 Roll cage, page 43. 15.6.15
Welds: All welding must be of the highest quality with full penetration. All tubes must be welded 360-degrees around the circumference of the tube.
Notice nothing about TIG?
Lets try the SCCA GCR.
Section 9.4 Rollcages. 9.4.G4
It is recommended that all joints of the roll cage be welded. All welding must include full penetration, no cold lap, no surface porosity, no crater porosity, no cracks, no whiskers, and so forth. Welds shall be continuous around the entire tubular structure. Procedures for welding alloy steel shall be in accordance with accepted industry practice. It is recommended that a certified AWS D1.1 welder do all welding.
Again, not a fucking peep about TIG. They just say to use someone that knows what they're doing. This is for sportsman all the up to the big boys in GT1.
How bout NHRA? Have to be a member to get inside the entire rule book. But the 25.5 cage spec(for fast cars) says.
All 4130 chromoly tube welding must be done by approved TIG heliarc process; mild steel welding must be done by
approved MIG wire feed or approved TIG heliarc process. Welding must be free of slag and porosity. Any grinding of welds prohibited.
The SCCA, NASA and NHRA don't fuck around with safety. Hell, NHRA won't even let you take a grinder to anything, they want to see what you did.
The BITD car/truck rule book. http://www.bitd.com/images/stories/p...CTRuleBook.pdf
States in SCR 34.
Rollcage construction material may be crew, dom, whr, wcr mild carbon steel or 4130 chromoly. 4130 chromoly is highly recommended for all rollcage construction. Stress relieve all welded intersections by flame annealing. All welds must be of high quality and craftsmanship with good penetration and with no undercutting of parent material. Oxy-acetylene brazing on rollcage is strictly forbidden.
Again not a peep about TIG only. They'll let you MIG 4130 even.
Lets try the King of the Hammers rule book, shall we?
18.104.22.168 Roll cage main structure material may be CREW, DOM, WHR, or WCR mild carbon steel or 4130 chromoly alloy steel. All welds must be of high quality and craftsmanship with good penetration and with no undercutting of parent material.
Hey, guess what I didn't see....you guessed it...a requirement for only TIG welding. What I don't like, is that they don't require a one piece main hoop diag from the drivers top 'B" the pass bottom "B". Everyone else does, and for good reason. So pleas show me the rule book that says TIG is required.
You have to "qualify" the procedure which requires weld testing and lots of money. TIG welding is considered "qualified" from the get go.
By your retarded logic, if I show up somewhere with a bad ass Miller Aerowave TIG machine under my arm, I'm qualified from the get go? Just think about what you said. Right now you should be feeling "not smart". Yes, they will qualify heat batches of filler and procedures in house. They are required BY NASCAR to MIG weld and use mild steel for roll cages. Mild steel has more give to it than 4130, it absorbs impact forces better.
The second set of pictures you posted from a different shop are MIG welds and they look pretty good. Just based off of those pictures I would lean towards that shop.
The second set of pictures show the welder isn't smart enough to remove millscale before welding. The lever arm design of the mount is ....interesting. The welding does look better than the first pics though.
What I see in the OP's pictures doesnt look bad at all. His travel speed isnt all that smooth, but its hard to free hand TIG weld around tubes like that.
Never heard of walking the cup have you? I didn't think so.
I will admit my blood pressure goes up when people are talking about and giving advice on stuff when its OBVIOUS they dont know what they are looking at. If you dont know, or arent sure, just say nothing.
I couldn't agree more.
What a lot of people dont understand about TIG welding is you dont even NEED filler metal. Almost ALL stainless pipe in a dairy or other food service environment is welded without filler. Its called autogenous.
I've done a shit ton of it. Only on fillets and only on stainless tables and benches used for food prep in galleys. It likes to crack because....well, there's no filler. I've also done it when tacking stainless sheetmetal together before finishing welding it.
Im not the greatest TIG welder and have never welded fish mouthed cages like that, but I have messed around with welding tubes to flat plate just for practice and its tough. Most guys will weld 1/2 the tube then re position and weld the second half. Some only weld 1/4 and then re position. If you are good(I am not) you wont even be able to tell where the welder stopped and started. Lots of guys that weld tube in a shop environment use positioners and turn tables. They physically never move and let the work piece turn.
So your not really a welder and have never welded a cage and that makes you qualified to run your cock sucker on the internet. Nothing you said was correct and now you look like a dope.
Have a nice day,