[TheForge] burners

[Bob]

     There is a high pressure (over 100 psi) gas line through my front 
yard along the road. I asked the gas company some years ago what kind of 
pressure they could/would provide to my shop. At that time I was 
considering a natural gas / oxygen torch instead of acetylene. Smith 
Torch Company told me that I could cut 1.5" stock with 15 lbs of gas 
pressure. That should also be OK for a gas forge I guessed. I also have 
a 25hp Superior oil field engine running line shaft stuff in the shop 
designed for natural gas with regulators already in place so I figured 
that at 15 lbs I would be in fat city.
     After a house fire in 1995 I had to redo all the gas plumbing 
anyway so if we were going to change the set up now was the time to do 
it. The gas company said 15 lbs was doable. I had to buy the meter (non 
standard meter - $160) and all downstream regulators ( 1 for the house). 
As with most of my projects I still have oxy/acet torch and no gas forge 
but the engine is on natural gas. Some day the rest will get done.

Happy New Year all.

Bob Willman
The Eagle's Anvil
Bowling Green, Ohio
WB8NQW

The natural progress of things is for liberty to yield and government to gain ground.

Thomas Jefferson
in a letter to E. Carrington,
May 27,1788


On 12/31/2011 8:08 AM, CGRAF wrote:
> On 12/30/2011 2:02 PM, Bob wrote:
>>        I too am considering a natural gas forge but I have 12-15 lbs
>> pressure available so I hope to go naturally aspirated. Still debating
>> whether to build or buy the burner(s).
>>
>> Bob Willman
>> The Eagle's Anvil
>> Bowling Green, Ohio
>> WB8NQW
>>
>>
>    I may have that in from the street, but the regulator at the meter
> cuts me down to between 6.5 and 7 inches of water column.
>
> That being said I have a natural gas forge that I use for heating bulk
> items to forging temps. I did succeed in melting a steel bar once, so I
> suppose that I can get welding temps. Mostly I just fire up the coal
> forge if I am going to weld, or light up the torch.
>
> My NG Burner looking from left to right.
>    1. A large tee "2" inch air from blower  piped into the side so that
> air can flow both ways. The left hand side has a short nipple with a
> spill gate that is easily adjustable.
> 2. To the right is a short nipple and another tee with a 1/8th inch gas
> pipe mounted with a bushing piped into the side. Gas/air mixture flows
> to the right and into side of the forge near the rear.
> 3. Forge  3 inches of kaowool and a 12 inch pipe closeable on either
> end. Usually the rear is blocked off.
> 4.Gas is at about 5 inches of water column is supplied through a
> regulator and two hand shut offs. One shutoff near the forge for
> operating it and another across the room, just in case.
> 5. Air is supplied from a remote furnace vent fan salvaged from a job
> site. It can supply way more than I need.
>
>    This is primitive and entirely devoid of any safety features, but it
> works.
> I run it only with the big door up and shop ventilation on. CO detector
> is a must.
>
>    All that being said, by metering the gas and air supplies I can get
> pretty much any size flame that I need and anywhere from oxidizing to
> reducing atmospheres in the forge.
>
> Mike Graf
>
>
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