[TheForge] re:burner question

Tue Dec 2 17:56:01 2003

Andy,
Why go to all that trouble, the ones that I make out of stainless steel
will last for years if they are installed right.  It seems that a lot of
people put them to far in the forge. they should be set back up into the
blanket or board about an 1" to 1/2". This will protect them from the high
temps.

Thanks
Larry Zoeller
[email protected]

> [Original Message]
> From: Andy Vida <[email protected]>
> To: <[email protected]>
> Date: 12/1/2003 10:40:04 PM
> Subject: Re: [TheForge] re:burner question
>
>
>
> John Emmerling wrote:
> > 
> > I've always been a fan of the blown burner school. A recent storm here
> > on the N.OR coast cost me 4-5 hrs today of lost forge time while the
> > power co and our local electricitian repaired the damage. So I've
> > decided to build a venturi forge and just sent LZ an order for stainless
> > burner flares. Thanks Larry! Any helpful construction hints? Do the
> > burners work better angled up? Some venturi forges I've seen  have hot
> > spots under the burners when they are mounted on top. Is there an
> > optimal distance to reduce that effect?  How many burners on a 12"l  x
> > 10" dia pipe forge using 2" kaowool?
>
> 	I've thought of niobium tubing.  Refractory metal
> 	that melts at 4474 F.  I think it may be an ideal nozzle
> 	material.  It is extremely easy to forge and form, but a
> 	horror to machine.  The only difficulty is joinery.  Normal
> 	welding is out.  Flash welding works as do electron beam
> 	and laser but the latter two require inert atmosphere with
> 	Nb.  It's not as cheap as other materials, but would be
> 	quite maintenance free.
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