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Anthony 
Orange Level
Joined: 11 Sep 2009
Location: Alva, Oklahoma
Points: 731
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 Topic: Welding Cast Iron
Posted: 04 Apr 2011 at 2:26pm |
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Can anyone weld a couple cast iron legs from an old wood burning stove...I can send you the legs and of course pay.........thanks Anthony
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junkman
Orange Level
Joined: 02 Mar 2011
Location: Nevada, MO
Points: 355
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Posted: 04 Apr 2011 at 2:53pm |
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Find someone with a wire welder. I have welded up holes in manifolds and welded brackets made out of cast with one. just prep it good and weld at short intervals. works just fine for me. Mark
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41776
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Posted: 04 Apr 2011 at 3:16pm |
Old cast can be welded and should be someone lacal that can do it .. In some cases it might need to be brazes if ornate or odd shaped where stick weld would be hard to do.
One problem is weld is going to show as the rod has a high nickle content and will look brighter than base metal. Depending on the alloy or cast SS rod works or i have had good results using Allstate #8 welding rod.
Check with welding supply house for the Allstate guide for cast rod.
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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allis restorer
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Joined: 05 Dec 2010
Location: Rib Lake, WI
Points: 184
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Posted: 04 Apr 2011 at 3:19pm |
Stainless steel Tig welding works good also with cast, or a good nickle rod also works well, just make sure you preheat the cast before welding it. Steve
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Go orange or Go home!!
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Burgie
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Joined: 13 Sep 2009
Location: Scottsburg, IN
Points: 1192
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Posted: 04 Apr 2011 at 5:03pm |
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I always use nickel rod.
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"Burgie"
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swit
Silver Level
Joined: 04 Dec 2010
Location: mid mi
Points: 68
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Posted: 04 Apr 2011 at 6:02pm |
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i have taken nickel rod chipped all the flux off of it then tig welded it works really well an old timer showed me that trick the results are great holds up really well also
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TMiller/NC
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Joined: 11 Sep 2009
Location: Lenoir, NC
Points: 1775
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Posted: 04 Apr 2011 at 7:40pm |
Years ago we used a rod made of cast iron coated with flux. It was 1/8" square about 36" long, have not seen any in several years. Used an acetylene torch to preheat the cast part then heated joint to a puddle to add filler rod almost like welding steel with torch. The repair was of about the same color as the part being repaired. Tim
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Alberta Phil
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Joined: 13 Sep 2009
Location: Alberta, Canada
Points: 3868
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Posted: 04 Apr 2011 at 7:49pm |
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I'm from the old school and still weld cast occasionally with the old square rod and Hematox flux. It is getting harder to come by now.
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48AC/WD
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Joined: 26 Feb 2011
Location: Virginia
Points: 106
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Posted: 05 Apr 2011 at 7:36pm |
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I use Nickel-cadmium rod for best results, take it from me, I am "Navy" certified through the shipyard to weld on 2000 psi boiler tubes and above, i might be able to play with them, if you arent in a hurry, send them my way and I will see what I can do. if you want to try it, pre and post heat them but whire weel the heck outta them, peening is another tactic in the welding process...
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Warren(Oh)
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Joined: 11 Sep 2009
Location: Jackson, Ohio
Points: 1127
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Posted: 05 Apr 2011 at 7:45pm |
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Interesting, this topic came up. I just recieved an old Wisconsin engine, single cylinder, most all cast iron. Looks like FedEx may have turned it over in transit. The intake tube is broke right at the flange that fastens it to the carburetor. Fairly clean break, should go back together easy enough but my welding skills are likely not up to doing it and making it work. Wire weld, huh ? Flux core ? I'll have to find something to practice on !
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BennyLumpkin
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Joined: 22 Mar 2010
Location: Centre Hall, PA
Points: 2657
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Posted: 05 Apr 2011 at 8:41pm |
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Biggest thing isnt the pre heat...I never do but its how slowly you can get it to cool....if its small enough put it in a bucket of sand....the sand retains heat and allows it to slowly cool...thats when cracking usually occurs is post welding when cooling down.
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Central PA Allis Express
1934 WC254
1945 WF
1945 WC135755
1951 WD68085
1953 WD45-150217
1957 WD45D-230744D
B110
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7060
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Joined: 16 Sep 2009
Location: Missouri
Points: 1148
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Posted: 05 Apr 2011 at 8:49pm |
Works even better when the sand has been setting on the top of a woodstove, not that I have one. Ive welded cast with someone switching back and forth ahead and behind me with the torch while im welding.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41776
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Posted: 05 Apr 2011 at 9:01pm |
Unless you have SS wire i would skip the wire feed , Never tried TIG weld on cast , will have to expierment with that.
Have welded titianium and other chemical resistant metals using TIG but never tried cast.
On the small engine head casting i would be looking at brazing i think instead of welding as less chance of warping head.
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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R.W
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Joined: 31 Dec 2010
Location: Swanton, OH
Points: 2975
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Posted: 05 Apr 2011 at 10:14pm |
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My dad uses lincoln cast rod and throws it in a bucket of dry ag lime (it holds heat better than sand) and wait some time and take it out and your good to go.
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In Search Of: 1958 Allis Chalmers D17 Diesel serial #9643D
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