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  • Rod oven carrier modification.

    In the past I would purchase low hydrogen rods such as 7018 in ten pound hermitically sealed containers, as shown below.


    1. Ten pounds of rods
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    The problem is that once the container is opened you need to store it in an oven at 250° F, to prevent the rods from absorbing moisture, otherwise the rods couldn’t be used for any critical application. I do mostly TIG, MIG and Flux Core welding, so I don’t use too many rods in my shop. I have never invested in a shop size rod oven and even if I had one, I would be hesitant to pay for the electricity to keep it powered for months without using any rods. As a result, I decided to purchase my 7018 rods in one pound hermitically sealed containers. I stock 3/32”, 1/8” and 5/32” sizes. The rods in these smaller containers are double the cost of rods in the 10 lb containers, but the waste would be much less, especially considering that I only use a few rods for each job.

    2. One pound rod containers
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    I have outside job planned, to weld a bracket for a boat hoist, which is located on Lake Saint Claire. I am waiting for a day that isn’t raining, has low wind that my friend and customer, Mark is available. I was rusty on out of position stick welding, so I have mocked up and practiced welding the required joints. Between practice sessions I have stored the low hydrogen rods in my portable rod oven.

    3. Rod oven closed
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    4. Rod oven open
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    Below is a picture of the rod holder that goes into the portable rod oven. I added the ring in the middle to keep the rods together.

    5. Rod holder
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    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Colchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  • #2
    To make the ring the first step was to bend a bar into a ring.

    6. Bending bar
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    7. Ready for welding
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    8. Ring welded
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    9. Rod holder complete
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    I keep my conventional rods (all rods except low hydrogen) in a bun warmer to keep them dry.

    10. Bun warmer closed
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    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Colchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

    Comment


    • #3
      11. Bun warmer open
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      Here in Michigan, it has been raining almost every day. I left an open package of 6011 rods out for one week, between practice sessions. The rods absorbed moisture and sputtered when I tried to use them. The package says to heat the rods from 70 to 80° C (158 to 176° F) for 30 to 60 minutes before using. My portable rod oven was set to 250° F, because I was storing 7018 rods in it. I figured that the rods contain Cellulose, so the higher temperature should be ok, because paper burns at ~ 480° F. It turns out I was wrong and the rods started to smoke. The baked rods changed to a darker color as shown below. I used the baked rods to complete my practice and they seemed to weld ok. In the future I will re-heat 6010/6011 rods to 160° F as directed.

      12. New and baked rods
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      Hopefully I will be able to weld the boat hoist this next weekend.

      -Don
      Miller Thunderbolt
      Smith Oxyacetylene Torch
      Miller Dynasty 200DX
      Lincoln SP-250 MIG Welder
      Lincoln LE 31 MP
      Lincoln 210 MP
      Clausing/Colchester 15" Lathe
      16" DuAll Saw
      15" Drill Press
      7" x 9" Swivel Head Horizontal Band Saw
      20 Ton Arbor Press
      Bridgeport

      Comment


      • #4
        I just bought, haven’t taken delivery of just yet, a large rod oven. I was considering putting it on a timer so it doesn’t run all the time. Right now I have two small rod ovens that run all the time as it is. I only have a few pounds of 7018 open at the moment and I have a job to get done that should use most of that. If the situation arises, I may leave them unplugged to see the difference in the Bill before I fire up the big one. Having the large oven will make it much more affordable to buy electrodes.

        Comment


        • #5
          I guess the operating cost will depend on how well insulated the rod ovens are. The high initial cost of a large rod oven has discouraged me from purchasing one up to now.

          -Don
          Miller Thunderbolt
          Smith Oxyacetylene Torch
          Miller Dynasty 200DX
          Lincoln SP-250 MIG Welder
          Lincoln LE 31 MP
          Lincoln 210 MP
          Clausing/Colchester 15" Lathe
          16" DuAll Saw
          15" Drill Press
          7" x 9" Swivel Head Horizontal Band Saw
          20 Ton Arbor Press
          Bridgeport

          Comment

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