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Weld Cast Iron?

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Chopper

11-15-2001 09:43:38




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I am a novice welder and have a Miller 175. My wife broke a shelf bracked off our Vermont Castings Wood Stove.

Question; can cast be welded? If so what settings and gague wire should I use.

Any help will be greatly appreciated.

Thanx
Chopper




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Chopper

11-19-2001 16:01:20




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 Re: Weld Cast Iron? in reply to Chopper, 11-15-2001 09:43:38  
Thanks to ALL for the input.

It was greatly appreciated....

Chopper



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DrCyKosis

11-16-2001 05:54:49




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 Re: Weld Cast Iron? in reply to Chopper, 11-15-2001 09:43:38  
Since you mention having the 175 I'll tell you that HTP American has (believe it or not) cast iron welding wire available. I've never seen or tried it but they got it.

HTP has all kinds of unusual specialty welding and cutting supplies. Great folks, good prices and quick service. They have a website you can contact them at: www.htpweld.com



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george

11-15-2001 20:55:17




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 Re: Weld Cast Iron? in reply to Chopper, 11-15-2001 09:43:38  
if you want sucess welding cast, use a torch with bare cast iron rod and flux. AIRCO and others make the rod and flux. Any rod that you can use with an arc welder contracts at a greater
rate than the cast iron, therefore is prone to cracking.

george



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John Faulhaber

11-15-2001 19:42:42




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 Re: Weld Cast Iron? in reply to Chopper, 11-15-2001 09:43:38  
Yes, it is possible to weld cast. However, if it is something important, take it to someone that has the know-how to do it. In a nut shell, you'll need to heat the cast iron red hot with a torch and then proceeed to weld it with a low hydrogen rod.(7018) I've never tried it personally, but that's how I'd do it. But, like I said, if it's really important, I'd take it to someone with some success at welding cast iron.

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Dean

11-15-2001 21:09:17




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 Re: Re: Weld Cast Iron? in reply to John Faulhaber, 11-15-2001 19:42:42  
What John said, but also peen the weld and surrounding metal as it cools to relieve stresses from the repaired area.



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George

11-16-2001 03:33:07




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 Re: Re: Re: Weld Cast Iron? in reply to Dean, 11-15-2001 21:09:17  
I have welded cast iron over the years and have had good luck with it if you weld a little and let it cool and weld a little more and let it cool and don't get in a hurry I think you will not have a problem. go to the welding supply and get rod made for welding cast iron, most brands work well they usualy have high nickel content. Your local farm supply will usualy sell you a small quanity. where as a welding supply sometimes likes to sell larger amounts.

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Keith

11-16-2001 08:01:24




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 Re: Re: Re: Re: Weld Cast Iron? in reply to George, 11-16-2001 03:33:07  
I agree with George, I weld a little and let it cool, Like 1/2 inch or so at a time. I also use a arc welder, (never liked wire) because I weld Mainly big heavy iron. I have an old neighbor that is a packrat and he gave me some rods caled "Perfalloy" and they work great on cast. I assume they have high nickel content, they are a good exotic rod and the beads won't rust. Nickel rods can be expensive, last time I asked at my local welding supplier they were $2.80 A ROD!! Needless to say I am tight with what rods my Good Old Neighbor shared with me. Good Luck!

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Len

11-18-2001 18:51:33




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 Re: Re: Re: Re: Re: Weld Cast Iron? in reply to Keith, 11-16-2001 08:01:24  
Go to your local welding supplier and ask for some sample rod for cast iron. They usually have offer 3 to 4 rods without charge.



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