Forge problems????

canranger

canranger

Joined
Feb 11, 2004
Messages
467
Hey al finished the forge and fired it up I have to take it slow for now because the clay still needs to cure but I have noticed dsome start up problems.

My front burner doesn't want to give a heavy blue stream unless it is one real low and then the flame isn't strong enough to fill the whoole chamber.

The back burner burns well most of the time but sometimes it chugs like a steam train. The flanes come out as a kind of blueish green and the oriface hole is drilled at a 54.

So far i have not gotten the chamber to glow but I have only left it on for 5 minutes or so to get the water out of the clay.

Here are some pictures.
bb1.jpg

bb2.jpg

bb3.jpg


Any suggestion would be appreciated.
 
All I can think of, you might have to align the front one's orifice. Also the reducer-bell's opening might be a bit narrow or large. Try to make chokes to burners. You may need to adjust the air intake. I had the same problems and I couldnt solve the chuging problem so I connected a blower to my venturi

1sdslg


This way you can adjust the air and gas volume and it works great....
 
I have the burner oriface hole drilled to #57 and before i hooked my burner to an air sorce my forge would chug until the the forge got hot and glowing but i definetly got better results with a 50 cfm blower and reostat to control the air volume. do you plan to get yourself acetylene regulator this will help getting your air flow issues corrected.and the green flame is caused by the brass hardware on your burner hope this helps
 
I have a 0-35 propane regulator and tonight I ran it for 20 mins and it didn't get hot just barely. I will look at the burner tomorrow and se whats up the forge itself is 16" long and I read something some where about the blue flame coming out of the forge and not staying in I can't find the link I had now for trouble shooting the burners.

Abe
 
If you make a door adjustable you will have hotter chamber, but athmospheric burners dont like the doors. If you attach a blower also you will be able to minimise the forge openings and heating times by making doors. My forge's back door is shut all the time because the forge deosnt need to breathe much....
 
I agree that from looking at it, a solid rear door with a small vent hole and a front door with a smaller opening would be preferrable as to raising the temperature inside the chamber. As it is now, most of the heat would appear to just exit the chamber via the large side openings. Think of a pottery kiln when designing the enclosure to retain heat.

But with those simple finishing touches, you've got yourself a very nice setup.

Also, it would appear that the air/gas mixture from the burners is not adjusted properly, as the only blue color should be at the base of the flame. You should have a nice yellow flame shooting out of the forge door opening(s).
 
Abe, are you using a full flow POL fitting on your regulator or a flow restricted one? I've seen guys do that before...

-Darren
 
Here's an example I put together of the correct and incorrect POL fittings to use...just in case this is what is causing your troubles...


IncorrectPropanefitting.jpg



CorrectPropanefitting.jpg



-Darren
 
I have the second
I think I will be swapping out liners and making doors still haven't checked the alignment of the orifice yet been under the weather today.
 
I can't tell from the picture but are you running both burners when you light it up? Have you tried just one untill it warms up? I went from forced air to ventura mainly because of portability but I am now back to forced air again. It seemed at least to me to get the ventura to run right the pressure had to be way up there plus I was always have to increase it the longer it was one. For normal forging I am running at 2.5 pounds pressure. With the ventura I had best results at 7. More pressure the more gas you burn up plus having to go get it more often.
 
Ok I tweaked the front burner and got it running it really lit the front part of the chamber. It wa just a atter of aligning the orifice. Now thw back burner is sputtering though I can't seem to please those too. Any ideas not enouh air too much air. runningbetween 5 psi and 10 psi.
 
Thanks Greg thats the link i will read through it and adjust the forge. Hopefully I can get it going.

Abe
 
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