[Greg From K/W]

Fusion welding only with tig?

http://kitchener.kijiji.ca/c-jobs-const ... Z569823052

No filler of wire? What would they be welding that would not require a filler material to be used?

[rake]

Most likely food service industry.

[Arizona SA200]

Rake is right, generally stainless schd 10. You see this a lot in breweries.

[Mongol]

I'd also agree with rake based purely on the name of the client.

But I'd disagree with ArizoneSA200, because sch 10 is typically too thick for autogenous welding. The thickest/largest stainless tubing I've come across was 6.000" x 0.083" wall thickness. A lot of what I deal with is 2" x 0.065". And the smallest I've hand welded was 1.000" x 0.065". All without filler.

[Arizona SA200]

I have seen schd 40 done autogeneous with no filler. I have never done it but a guy i work with has samples on his desk. I talked to him about them and they used a pulse process. It can be done. As far as the schd ten learn to walk the cup and it can be done manually.

[weldin mike 27]

Lots of shop fittings and furniture is also welded like this.

[Mongol]

Interesting. I've never seen autogenous welding on something that thick. I imagine he used a 1/4in tungsten.

[Arizona SA200]

Not sure on the tungsten size Mongol. I know with the pulse process it wont get quite as hot but next time im in the office ill ask him. I know the fit up must be exact and they use some high dollar tubing saws for it.

[Mongol]

I'm familiar with pulsing for autogenous welding. That's how orbital tube welding is done.

I was also thinking that it might have been something along these lines:

http://www.lincolnelectric.com/en-us/su ... etail.aspx

[Arizona SA200]

Man Mongol that laser stuff is high tech. The process that my coworker "used" was tig for sure. Both autogenous and manual. Thinking about it he is from Texas and may be a little full of it. I'm going to go in to the office tomorrow and ill get some pictures of what he has. I know for a fact there is some schd 10 done with the autogenous pulse process and think he may have a schd 40. Like I said I don't know for sure he did these welds as i did not see them done but he seems to be very knowledgeable on how they were done so I'll pick his brain a bit more. There is another guy I follow on Instagram that does schd 10 in breweries both manual and autogenous.

[Greg From K/W]

Very interesting guys thanks for all the input. I had no idea that it was so common. I look forward to seeing the pics.

I would have to get a lot better than I am now to do that.

[Mongol]

Cool. I look forward to seeing the pictures.

Also, I'm from Texas.

[Arizona SA200]

Well then Mongol sorry bout the Texas comment he just strikes me as one of them know it all welder types. I didn't make it in to the office Friday and got stuck on an emergency shut down Friday and yesterday. I'll be at the shop later this week and try to get some then.

[Mongol]

Haha. No need to apologize.

I also don't care for "know-it-all" types of any kind.

[Arizona SA200]

I agree' but we see them all to often in this trade.