1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Burner Troubleshooting

Discussion in 'Forges, Ovens, Kilns, & Salt Pots' started by Illuminaughty, Mar 12, 2017.

  1. Illuminaughty

    Illuminaughty New Member

    Likes Received:
    9
    Trophy Points:
    8
    So I've got the forge set up. Go to start it up and my flame is super orange. It went from this when testing the burner.

    [​IMG]

    And after installing in the forge it's a bright yellow-orange. Only difference is its flame is enclosed inside the forge and it's mounted vertically instead of horizontal.
    [​IMG]

    It got nice and hot on this test fire. But not sure if it is efficiently enough. I believe the forge is inefficiently burning off alot of fuel. however nothing In the burner construction has changed between testing and installation.
    [​IMG]
     
  2. dancom

    dancom Dust Maker Best Shop Tool

    Likes Received:
    1,092
    Trophy Points:
    113
    Looks pretty good, it appears a little on the rich side when in the forge. It could use a tiny bit more air. You certainly have a reducing environment.

    What are you using for the venturi parts?

    Dan
     
  3. Illuminaughty

    Illuminaughty New Member

    Likes Received:
    9
    Trophy Points:
    8
    So the burner is build with 2, 1-1/4" to 3/4" reducers on the ends and a 10" long 3/4" pipe. All black pipe. The gas line coming in is estimated around 4 - 8lbs piped up to a capped brass nipple mounted in the side of the reducer with a 1.19mm or 0.046875" hole as the orifice. I've been suggest using .035" but couldn't find one that size.
     
  4. John Noon

    John Noon Well-Known Member

    Likes Received:
    621
    Trophy Points:
    113
    You can use a MIG welding tip they come in 0.020", 0.035" and 0.045" and available at any welding supply place or Princess Auto or Canadian Tire
     
  5. dancom

    dancom Dust Maker Best Shop Tool

    Likes Received:
    1,092
    Trophy Points:
    113
    Good. You can reduce the fuel a bit, like you suggested a 0.35" or increase the air. Try shooting a tiny bit of compressed air into the inlet reducer and observe the flame. If it blues up then the mixture is off.
    I used a 1-1/2" to 3/4" reducer which lets a little more air in. That with the 0.035" MIG contact tip, which is probably closer to 0.045" as the hole is oversized accommodate 0.035" wire.

    Dan
     
  6. Illuminaughty

    Illuminaughty New Member

    Likes Received:
    9
    Trophy Points:
    8
    Well if my holes at .047 that can't be too far off. Buthen I hear what your saying about the reducer size. Gonna try with a 1-1/2" and see if there's any positive change.
     
  7. Illuminaughty

    Illuminaughty New Member

    Likes Received:
    9
    Trophy Points:
    8
    After some quick calculations the ID of 3/4" pipe is .75. If propane needs an air fuel ratio of 24:1 then my orifice size can be calculated as follows:
    .75 / 24 = .031 which is = 1/32 drill bit.
    If anyone can confirm or deny this that'd be great. Thanks. Going to test this evening and post my resluts.
     
  8. Mythtaken

    Mythtaken Staff Member CKM Staff

    Likes Received:
    263
    Trophy Points:
    83
    I notice in your burner test image, it has a flare on the end. Did you remove that when you put it in the forge? You shouldn't need it, as the kaowool acts like a flare.
     
  9. dancom

    dancom Dust Maker Best Shop Tool

    Likes Received:
    1,092
    Trophy Points:
    113
    You'd be reducing the fuel by going with a 1/32" hole, that would up lean it up somewhat. Did you try shooting a little bit of compressed air in and leaning it up? Just for a test.

    Dan
     
  10. Illuminaughty

    Illuminaughty New Member

    Likes Received:
    9
    Trophy Points:
    8
    It has the reducer on both ends.
    And it did lean up its burning nice and blue now with the 1/32" hole. Was easier to do this as opposed to rigging up some way to inject air.
     
    dancom likes this.

Share This Page