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  1. #1
    Join Date
    Oct 2013
    Posts
    27

    Default Tig welding cast iron?

    Hey guys I want to Tig weld some cast iron, but I don't know what kind of tungsten I need to use, And what filler I need?

  2. #2
    Join Date
    Apr 2013
    Location
    Southeast idaho
    Posts
    30

    Default Tig welding cast iron?

    What are you welding? (Vise. Repairing a casting?)

  3. #3
    Join Date
    Oct 2013
    Posts
    27

    Default Tig welding cast iron?

    Engine block

  4. #4
    Join Date
    Oct 2006
    Location
    Mpls, MN
    Posts
    1,790

    Default

    You need high nickel rod or it'll crack as it cools.
    Syncrowave 250DX
    Invison 354MP
    XR Control and 30A

    Airco MED20 feeder
    Thermal Dynamics Cutmaster 81
    Smith O/A rig
    And more machinery than you can shake a 7018 rod at

  5. #5
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    249

    Default

    Hey jim
    I stick weld cast with utp55 rodwhats that equal to in tig rod?
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  6. #6
    Join Date
    Oct 2013
    Posts
    27

    Default Tig welding cast iron?

    And if I was welding on a vise or old yard art I can use stainless. 308 filler?

  7. #7
    Join Date
    Oct 2006
    Location
    Mpls, MN
    Posts
    1,790

    Default

    You can scrape the flux off your electrodes and use those for filler with TIG.

    I've had no luck with anything cast iron and 308/309. Doesn't matter if I preheat, acetone soak, sacrifice animals... always cracks on me right as I think it's going to hold. TING!
    Syncrowave 250DX
    Invison 354MP
    XR Control and 30A

    Airco MED20 feeder
    Thermal Dynamics Cutmaster 81
    Smith O/A rig
    And more machinery than you can shake a 7018 rod at

  8. #8
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    249

    Default

    Get you some fire bricks
    Build yourself 3 walls and a plate ontop to enclose the heat . Use a fiberglass blanket and wall insulation.
    Weld as u normally do . And right as your done shove it into the enclosure. Pack it with insulation and wait 24hours . Itll cool down really slow .its always worked for me .
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  9. #9
    Join Date
    Oct 2013
    Posts
    27

    Default Tig welding cast iron?

    Ok thanks

  10. #10

    Default

    Quote Originally Posted by DPSwelder View Post
    Ok thanks
    I have tigged with I think monel /nickel 60 rod or something with good results. Generally 60-60 nickel rods are good. I have also used stainless but despite being very strong it does not tolerate flex AT ALL....

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