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Author Topic: Any welders here? Welding steel to cast iron?  (Read 2775 times)

RSI

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Any welders here? Welding steel to cast iron?
« on: April 27, 2011, 09:44:14 AM »
Is there any problem welding cast iron to steel? I need to replace the jacks on the back of my boiler trailer and was thinking about welding a couple of high lift type on instead. http://www.tractorsupply.com/trailer-jacks/farm-jack-48-in--0115902

Will welding them make them unsafe?
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RSI

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Re: Any welders here? Welding steel to cast iron?
« Reply #1 on: April 27, 2011, 11:30:22 PM »
Well it looks like I found the answer with some google searches. It looks like if I MIG weld cast iron it will crack when it cools. It may be possible to stick weld with the right rods if you know what you are doing. I am terrible at stick welding and don't even want to think about trying it.

Is there anything similar that would work instead of the hi-jacks? I want something that only takes a few seconds to use.
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RSI

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Re: Any welders here? Welding steel to cast iron?
« Reply #2 on: April 27, 2011, 11:37:04 PM »
And if anyone is interested, here are some pictures from when I built it.





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Crazee Canuck

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Re: Any welders here? Welding steel to cast iron?
« Reply #3 on: May 15, 2011, 07:02:46 PM »
309 stainless steel stick

preheat if you can and wrap it up when you are done

cast iron is tricky stuff,  you have to reduce the amount of thermal shock to make it work

if you don`t preheat it could fracture the cast when you strke the arc

and if you don`t wrap it when done, it will crack beside the weld because it contracts to fast when cooling

best i can do to help you, you could try MIG but i wouldn`t recommend it
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