Tig welding custom cut bend pipes

Quote:

Originally Posted by Joe from NY

For a hoot, go make your posts on Weldingweb and especially mention that you used an Everlast machine. They will be so busy bashing you for your choice of machines, that they will never get around to breaking your balls about your welds. You could really start a shitstorm there with just one short post.

No way Joe I do not want to get people making fun of me lol. I am not insecure or anything I just want valid input and not trolling remarks. Once I get really good with the EL Tig Ill post stuff on there and link it here to see what people say!

Quote:

Originally Posted by jakeru

Looks like a great project for learning to weld thin stainless tubing to me.
The fit-up must have been very good if you welded all that autogenously. If you don't need maximum strength of a "built-up" weld bead, there is nothing wrong with autogenous welding, imo. Welding autogenously can allow dramatically increased travel speed and along with that, a reduction in heat input.
It is challenging to maneuver around a tube. You will find with additional practice, you will be able to get around the tube with fewer "stops and starts". i.e., you'll be able to weld longer seams at a time, and pivoting your torch (filler rod if applicable), and point of view more each time.
The solar flux when it gets up to temperature, melts and shields the stainless underneath, and then solidifies into that black glassy stuff you see on the inside of your tubing. Assuming you got the solar flux evenly applied everwhere on the back side of the weld, then if you see a spot on the inside of the tubing where the solar flux didn't get up to temperature (no black glassly stuff but you still see the grey powder of the unactivated flux), it means you didn't achieve enough heat to melt the metals and fully penetrate the weld bead through to the back side in that spot.

Wowowow Thanks Jakeru I didn’t even know what I was doing when I welded this! Autogenously welding is when you fuse 2 materials together without filler material (Wikipedia just now). Yeah this pipe will have almost no weight on it and it will be suspended by the engine there should be no stress or strain on it. And the pipes were cut from a wooden jig in a band saw I made. Then I sanded them until I couldn’t see any light between it and tape it togeather.
I noticed that I was able to move very fast after I got the hang of it. I figured out the angle that I should hold the torch and it was really easy after that. If I had to add filler I would have been very slow.
Thanks for the info on the solar fulx! All I knew is that it’s supposed to shield the weld so I don’t get that sugaring or chunky black stuff called Carbide Precipitation. I figured trying to back purge something small like this would be way too hard. I thought that black glassy stuff in the inside of the pipe was still carbide precipitation but its solar flux after it changed. It goes all the way around the weld so I guess I got it on the pipe pretty good! I scraped away the black glassy stuff and there is shiny metal underneath so I don’t believe I have any carbide precipitation at all. Thanks for the info Jakeru!!!!

Quote:

Originally Posted by 67cudafb

The fit-up must have been very good if you welded all that autogenously Ok are you trying to impress or confuse me with big words lol:O

Read this Cuda this is where autogeanously welding is explained I learned something new and I didn’t even know I was doing this at all!
http://en.wikipedia.org/wiki/Gas_tungsten_arc_welding