[TheForge] burners

[James Binnion]

Nice setup. 

On Dec 31, 2011, at 7:30 AM, Bob wrote:

>     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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> 
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James Binnion
jbin at well.com