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Tool Talk Discussion Forum

Re: How To Weld Cast Iron... Like A Cheapskate

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Puddles

11-26-2012 03:35:12
24.113.77.208



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george md, I for one would be very interested in reading about your technique for welding cast iron with a torch! I can probably count on one hand how many times I've had to repair cast iron. Now cast steel I've done numerous repairs on pile driving equipment. For years the company would buy a rod by Welco, called Super Missile Weld. Basically just a more expensive 312 stainless steel. Later we just started using 7018. Now this was on cast steel, not cast iron.
I think this was posted by member Cast Weld on Welding Web forum. If I remember correctly he repairs cast iron for a living.
I do a lot of cast iron repairs with 100% success so far. Last year, after several months of research, I found information on a couple websites & mostly in an old Lincoln Welding book. The process is called "Cold Welding Cast Iron With MIG". I practiced several weeks on broken cast iron parts & broken/cracked manifolds my bro' gave me to get my technique down pat. It has worked with superb results.

I use MIG, 309/309L .030 wire, 98/2(AR/CO2) @15cfh & generally in the 80A range. You can use any gas with a mix of no more than 5% CO2 (ex:95/5). The 309 wire has a carbon content of .01 & works best. The idea is to keep the temperature cool by running short beads <1" & allowing the joint to cool before continuing. After running the short bead, you can take your glove off & lay your hand on the metal & will feel only warm to the touch. Since your pieces are not large, I would suggest shorter 1/2" beads & allow each weld to cool back to room temp before continuing.

On Tractorbynet forum there is a member there who goes by yomax4, he does a lot of cast iron repair with Spray Powder Torch.

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george md

11-26-2012 15:30:40
209.213.167.201



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 Re: How To Weld Cast Iron... Like A Cheapskate in reply to Puddles, 11-26-2012 03:35:12  

Puddles,

I would be delighted to chat with you about the process and welding in general. I used chat with T-Bone every now and again , sure miss him.

Send me an email with a phone # and I'll call, I'm always here till at least midnite.

george



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Puddles

11-26-2012 15:40:49
24.113.77.208



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 Re: How To Weld Cast Iron... Like A Cheapskate in reply to george md, 11-26-2012 15:30:40  
Email sent George.



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60 Acre Hillside

11-26-2012 04:11:33
67.142.170.22



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 Re: How To Weld Cast Iron... Like A Cheapskate in reply to Puddles, 11-26-2012 03:35:12  
It looks like your third paragraph contradicts the first paragraph. I know you have much experience and I respect your opinions but please explain.



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Stan in Oly, WA

11-26-2012 13:18:50
174.31.216.176



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 Re: How To Weld Cast Iron... Like A Cheapskate in reply to 60 Acre Hillside, 11-26-2012 04:11:33  
The third paragraph is quoted from another source, as stated in the 2nd paragraph. Not as clear as it might have been with quotation marks, but besides being one of the most knowledgeable contributors on this site, Puddles is also one of the most articulate. I wouldn't begrudge him a couple of quotation marks.

Stan



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