[TheForge] Ribbon burners

[Rick Korinek]

Frosty,

I have made ribbon burners for my gas forge.

Actually they are ribbon nozzles on the ends of 3/4" Zoeller burners.  0-15
psi propane, no blower.

I used 3/4" 90 deg sweeps (electrical rigid conduit) between the burner Ts
and the ribbon nozzles.

The ribbon nozzles consisted of a sheetmetal (about 1/16" or 16 ga.)
manifold at the end of the 3/4" sweep.

The very end of the ribbon burner is light weight insulating firebrick with
3/8 holes drilled into it--through the 2 1/2" wide side.  The firebrick
slides into the bottom of the sheetmetal manifold and is what protudes into
the forge chamber.  The firebrick is friction fit into the bottom of the
manifold and sticks out 1".

The manifold actually has 2 separate chambers that are feed with 2 Zoeller
burners above.  The result is that I can use 1 or 2 burners as needs arise.
A longer "burner ribbon" with more burners can easily be envisioned.  An
idle circuit rounds out the gas circuit.

The heating effect of this arrangement is a very uniform long heat without
the cold spot between more conventional burner nozzles.  The length of
heating is about 7" long with both burners running.

Another benefit is that the burner nozzles are very long lasting.

-Rick

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Jerry Frost
Sent: Thursday, May 14, 2009 4:10 PM
To: Blacksmithing List Sponsored by ABANA
Subject: [TheForge] Ribbon burners

I have a request from a local bladesmith who wants to 
make a heat treat oven and would like to use a ribbon 
burner. In spite of how many burners I've built I've 
never build a ribbon burner and need some general rules 
of thumb such as:

Number and dia of the burner holes per sq/in. and 
pattern if there is one.

Size of the plenum per length of burner. He wants a 
pretty long forge, upwards of 4 1/2' so I think there 
will need to be a substantial plenum to maintain an 
even pressure to the burner holes.

How much blower? Placement of the blower output in the 
plenum?

And anything else we might need to know.

Thanks,

Frosty
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.


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