Official Fabrication & Welding Porn Photo Thread

[maniacmatt]

I am not sure as to the scientific reason but generally stainless steel will get that color or cold rolled steel when welded, if there is poor gas coverage or to much heat is applied the color will be dark grey or black. if the base metal is Titanium and you see color in the welds that is a bad thing. the weld is contaminated because of poor gas coverage. the best way to weld Ti is with the work peace in a argon gas filled chamber. another way is with a high flowing gas lens and another device covering the trailing welds with argon gas. of if your really good you can turn up the gas flow, angle the torch so that as your welding gas is not only covering your current weld but also your trailing welds.

^if I am incorrect someone please correct me

when I was first learning how to Tig I asked that same question about the color in the welds. i was told that its because i was doing everything right good speed,amount of filler added,correct amount of heat,and good gas coverage.

The Bluing is actually the base metal reacting with oxygen in the air. Metals will continue to react with oxygen at high temperatures even if they are not molten. So as you move your torch you leave hot metal exposed to the air and this reaction occurs. The temperature varies between metals, with Ti it is extremely low hence the need to weld it in an inert environment.

Turning up the your gas flow rate or using an extreme torch angle are actually bad ideas. The increased flow or angle can actually draw oxygen into your weld zone, making the reaction worse.

And to abide by thread rules, a swirl pot I built for my friends race car.

[Wh33lhop]

Anybody forgotten about the Kirkham cobra?

Billet everything, double-shear everything, re-engineered most everything, inboard suspension, monolug, etc etc













Log here: http://www.clubcobra.com/forums/kirk...s-kirkham.html

Article/compiled pics here: http://jalopnik.com/#!5385797/how-to...aluminum-cobra

Pics are kind of shitty, but if you want good ones buy the book ;)

[Shangsta]

Yeah those kirkham cars are full of awesome cnc work

http://www.youtube.com/watch?v=c28JCPGGRIE

[!kid]

Turning up the your gas flow rate or using an extreme torch angle are actually bad ideas. The increased flow or angle can actually draw oxygen into your weld zone, making the reaction worse.

agreed, some how my coworker with 30 plus years experience as a welder (some of witch was with aerospace) got away with welding Ti without using a lens or inert gas covering the weld.

and some pics...

[blueapplesoda]

there are some amazing tig beads

liek omg dr00lage

[Massimo]

Can someone explane to me why some of these pipe bends are actually welded sections of pipe to make the bend. Is this just for looks or is there for a reason?

[MonkeyMadness]

There's no cnc or 3d bender that can put bends so close together. You need room for the wiper die and clamping block. We need a minimum of 4" between bends on our cnc's. The only thing that can do this is hydro forming and thats about as expencive as you can get, And not worth it for one offs.

[b*saint]

What he said.

[bmwmech1]

Anybody forgotten about the Kirkham cobra?

Billet everything, double-shear everything, re-engineered most everything, inboard suspension, monolug, etc etc

Pics are kind of shitty, but if you want good ones buy the book ;)

Yeah, I forgot about that Kirkham when I posted the link to their site earlier in this thread... and you're right... buy the book!

Garey

[der affe]

you will see almost no difference in flow between a header built with j/u bends and dounuts and welded with a gas purged tig than a one piece bent header..

it can be more labor intensive to make, but without a cnc bender it is the way to go.

[e30shmobberr]

only photo of my welds. keep in mind its a small ass fitting..

and i will throw in a pic of me welding..

[!kid]

damn, doesn't you hand get hot holding the torch like that?


and a picture...

[!kid]

[Farbin Kaiber]

And, this is MIG.

[browntown]

f-it, I'm going back to college and taking whatever beginner welding classes I need to to move straight to tig awesomeness. There was a guy at the picnic last year with tig welded everything in his engine bay, from wiper fluid, to coolant overflow. I'll find the pics I took