The 3rd time is the charm!! (My forge construction)

Ok Here are some changes I am going to make if you can add anything please do:




Ok....

The red is what I am going to replace with iron pipe that I just ordered. ( one 1-1/2 x 12 one 1-1/2 by 5 and one 1-1/2 90 degree.)

The blue circle and arrow is illustrating my moving the jet to the top and replacing the elbow that is there with the one I already have welded up.

The purple is the moving of my gate valve

I tried to draw in the jet where it is going to be after I move it. (the light blue is air and the orange is gas.)


BTW I lit it up to cure it today, and the flame does do a vortex.
 
That's good, Jimmy, about the vortex. Importantly, it makes for a much more even heat.

The changes look fine and surely won't hurt anything. The iron pipe I have stressed before as being preferable.

The flame should form in the forge. I have a different burner, but when in the forge, there's actually about 1/2" or so from the pipe end and the flame. When I get the gas and air too low, heat will creep backwards along the burner as the flame ignites in the pipe. If the pipe is getting red hot, you need to play with the mixture and velocity (air flow). You will learn this with time as you play with the mixture and flow.
 
Originaly I think I was having some problems geting the flame out of the pipe. It was concentrating far back at the jet. I think it will just take some fine tuneing.

When I move the gas input I don't have to make a jet or anything to go into the forge itself, it just comes directly out of the 1-1/2 pipe?
 
No, shouldn't need a jet, though my forges have had smaller tubes. A lot is finetuning the mix.
 
I made the modifications and cranked her up today. She ran a lot better. I found that the new way I set up the burner really made a difference. The flame seemed more intense and I saw the vortex more clearly. I put a piece of 1/2 x 1/2 piece of square bar in there and it was glowing in about 10 seconds. My insboard door started browning on the outside, but I figure that’s no problem. I let it cool down and then put another layer of ITC in there. Tomorrow I am going to cure it, lay a fire brick in there, and start forging.

These are some pictures from today:









 
Now you're talking. With the gas entering where you have it now, you'll get a good mixture, which helps with a good burn. Great construction, too, by the way.

John Frankl
 
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