Something to think about...
Friday, January 30, 2009
Charlie's Propane Forge
Charlie finished this propane forge recently. I think he did an outstanding job on it. Maybe he can post some of the details on it in the comments section. I'm interested to know what size hole he drilled in the end of the nozzle. And at what psi is he running it? With mine I like to forge at around 5 to 7 psi and heat treat at 1 psi.
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4 comments:
Todd
Why do you prefer to heat treat at a lower gas pressure?
SBW
I get a more reducing flame. I have much more control, enabling me to watch the colors closely and avoid any overheating. It reduces stress to the steel. It enables soaking.
The nozzle is a 1/8-pipe and cap with a .020” – 1/2mm hole drilled in the cap. 5psi or a bit more seems to be about right for forging. There is 6.5” between the vents and the end of the pipe. There is a taper molded into the insulation. It is made of ¾” black pipe. I have not heat treated in the forge yet.
The tubes exterior is about 10” X 12” the inside is about 4.5 X 12. The insulation is ceramic wool coated with satinite. I made a movable back wall since I normally work on small blades. The movable wall is a soft fire brick cut round to match the chamber, I attached a piece of all thread to it so that I can pull it back and forth.
Charlie
Thanks for those details and specs, Charlie!
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