Venturi Burner ?

NDallyn

NDallyn

Joined
Jun 22, 2006
Messages
814
I figure that it's time to expand my skill set a little bit (after 3 years or so of stock removal, I'm getting pretty bored) so I'm going to be building a forge or two, and I need some info on how to build a proper venturi burner and position it for a 12x20 (probably around 8x 16 inside) horizontal forge. I'm going to need two burners. I would order one from ellis, but the cost of shipping something to Canada that I can make myself (I'm a journeyman welder with access to a full fab/machine shop) just ain't worth it. I am going with the venturi burner because I want something I can take out in the back yard in the summer and play around with and not have to be running extension cords (or take it out camping:D *umm* forge roasted trout). Whatever help you folks can give a guy would be much appreciated. And if you include pics or diagrams, I'll promise to have a Big Rock (beer that is) in your honor:thumbup: .

Have a good one,
Nathan Dallyn
 
do a search on the forums for venturi burners. there are hundreds of threads on them. last one was by Indian George called need input.
 
Unfortunately, I can 't get the right parts here to make a side-arm burner like the one on your link. I cannot get the same type of reducing tee and I have never, ever seen 1 1/4" pipe in industry (only 1" or 1 1/2"). Right now I'm planning on making a modified mongo-type burner from Ron Reil's website. Does anyone have experience with these?
 
Hey bud if your plant has safety showers they are all plumbed standard with 1 1/4 fittings. Talk to the guy who maintains them
 
I suspect that 1 1/4 black pipe fittings here are like Robertson drive screws in the US (or at least the parts I've been to) - they might exist but good luck finding them. All the black pipe I've ever seen is either 1 or 1.5" nominal pipe size. I'm not a plumber, I'm more familiar with oil and gas, but all the plumbing here is copper, nylon, or standard pipe sizes from what I've seen (1/2, 3/4, 1, 1 1/2, etc.)
 
Firstly, Welders rock! welcome to the brotherhood mate:thumbup: . secondly Canada sounds a lot like Aussie, cant get half the things the yanks have:mad: anyhoo i made a couple of venturi burners aka. ron riel style using 3/4 n.b pipe and 2"-3/4" reducer couplings and they worked pretty darn well i must say. dont know about the mongo burners though, had a crack at making one and i couldn't get the thing to run right, mind you didn't spend much time trying, think it might have had something to do with insufficient air flow?
 
Just one thing to keep in mind. You're planning for an awfully large forge there and you'll need a big venturi burner (or maybe 2) in order to keep it at a good heat. Are you planning to just do general forging or do you have plans for working on large damascus billets, etc? You can probably get by with a much smaller forge interior and save $$ in propane and materials.

-d
 
Actual dimensions for the forge I'm building are different from the original plan. I'm using a piece of 8" sch80 pipe for the body 16" long. Inside dimensions after insulating will be about 6x16" minus the volume lost for the floor (should be about 4" tall inside after floor is poured). I would like something that I can do a clay-coat ht in and also use for general forging and welding. I was planning on using two burners placed about 4-6" from either end. This is my first crack at this so let me know if I'm off track.
 
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