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Welding Steel To Cast Iron

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#1 johndeereelfman OFFLINE  

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Posted May 18, 2012 - 10:25 AM

Looking for successful methods, for welding steel to cast iron. My project consists of welding steel spindles permently to the cast axle, so they don't turn. I want to hear both the good and bad results.

Do you guys heat up the cast first, before welding, so that the cast is fully expanded, then weld and leave everything cool down together so that there is no separation? Do you use a certain welding rod over another, due to better results?

Would it be just better to drill a hole through both pieces, sleeve it, and run a bolt through it? After the project is done, the axle and spindles will be under a little stress, so I want a method that will hold up well.

Edited by johndeereelfman, May 18, 2012 - 10:26 AM.

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#2 skyrydr2 OFFLINE  



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Posted May 18, 2012 - 11:04 AM

There are a ton of different methods and procedures, if your a good stick welder/torches user, then welding it with nickel would work . Just need to keep the cast hot for an extended period, so the 3 different metals all draw down at a common temp. Royal pain if you ask me.
Depending on the contact area of the 2 different metals, you can braze them or use high temp silver solder.
And if it is cast steel, then just weld it as nomal.
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#3 Cvans ONLINE  



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Posted May 18, 2012 - 09:47 PM

Another proven method is brazing. Doesn't seem to be so heat critical during cool down.
Good luck.
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#4 olcowhand ONLINE  


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Posted May 18, 2012 - 09:50 PM

Stainless rod will work as well. Brazing may be the easier route though.
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