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Thread: Cast Iron

  1. #1
    Join Date
    Sep 2013
    Posts
    18

    Default Cast Iron

    May be a stupid question, but can you mig weld cast iron. If so is there a certain wire or anything special I would need to know. Have an old syrup pot that has a crack in it. Any ideas????? Thank for the advise. TW

  2. #2
    Join Date
    Oct 2007
    Location
    Cave Creek Az
    Posts
    929

    Default

    Crown alloys 44-30 wire. $80 for a 2# spool.

  3. #3
    Join Date
    Oct 2013
    Posts
    10

    Default Cast Iron

    You should be preheating it first. And it will need it to cool slowly. If it will fit you can preheat it in a bucket of sand on a gas grill. Arc rods for cast work the best and cost only a few dollars.

  4. #4
    Join Date
    Apr 2012
    Location
    Western Pa.
    Posts
    190

    Default Cast Iron

    If memory serves me correct (it doesn't) the last time I ran out of Ni-Rod & walked up to local auto-parts store who carry small amount welding supply's (LWS-20 mile away) I paid $68.00 a Lb.

  5. #5
    Join Date
    Jul 2010
    Posts
    374

    Default

    Quote Originally Posted by Redfishtony View Post
    Any ideas?????
    Braze it?????

  6. #6
    Join Date
    Jul 2010
    Location
    Four Flags city
    Posts
    289

    Default

    Weld Mold 750
    Eureka 5545

  7. #7

    Default

    Check out Chucke2009 on YouTube. He has 2 or 3 good videos on this topic.
    =======================
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  8. #8
    Join Date
    Sep 2013
    Posts
    18

    Default

    Thanks for the info. I'll have to preheat with torch and see what happens.

  9. #9
    Join Date
    Oct 2013
    Posts
    23

    Default

    preheat weld with weldmold 705 or 706 post heat rap in fiberglass insulation let cool overnight

  10. #10
    Join Date
    Dec 2012
    Location
    Front Royal, Va
    Posts
    64

    Default

    Hey guy's not to say i did right but i welded a John Deere disc with regular wire. The part i welded was the bottom axle retainer which was cast. I ground the edges preheated with a propane torch and welded it hot and fast. I pinged on it with a small ball peen hammer for 5 minutes and then buried it in a bucket of sand that i warmed up in the microwave. Let it cool all night and the next evening i installed it with no issues. This was 2 years ago and so far it's fine. Maybe i'm just lucky.
    Last edited by Fireman; 10-10-2013 at 08:28 PM. Reason: spelling
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