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John Deere Tractors Discussion Forum
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Muggy welding rod --FIT

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430WLPG

12-31-2005 16:59:56




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Frank, have you ever welded steel to cast iron with Muggy rod.We have a D that broke a drive chain and punched a hole the trans case. And we bought it that way unknowingly and the piece is gone. And was wondering if we could make a steel piece and weld it with the Muggy rod ,we've never tried Muggy rod before?




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Glen in TX

01-01-2006 21:50:49




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
What year D? Lots of them being scrapped out and sure to be a good trans case at a salvage yard nearby.



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430WLPG

01-01-2006 11:57:38




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
We were thinking of using cast to start with.But the bottom of the trans case where the hole is is kindof rounded and you probably couldn't bend cast much without cracking.I knew the nirod would weld steel to cast. It's just the steel patch would be easier to work with. I've have my best luck with cast was to braze it. But I saw FIT's post about this Muggy rod and was curious. Thanks for all the ideas

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F-I-T

01-01-2006 09:36:58




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
I was thinking later that if you could find a piece of cast iron from an old block or a broken radiator tank that you might want to take the time to grind and chop and chink it until you get a piece of cast that will fill the hole. Then you can be assured that the expansion of all things would be pretty equal. I do know that you can build up using muggy rod until you have sufficient thickness. They show plugging a hole and laying concentric beads until it is closed.

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Mike M

01-01-2006 06:36:14




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
Regular old ni-rod will ? So I would think anything that works on cast will ?



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Tye W

01-01-2006 06:25:02




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
You can weld mild steel to cast iron using 7018 rod. What you have to do is only weld 1/2 inch at a time then stop. You'll need to let the metal cool to the touch before you weld anymore. If the pieces get too hot then you'll get a crack right down the weld. It can be done with persistance and patients. Any questions email me [email protected]



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DEEREDAVE

01-01-2006 07:26:54




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 Re: Muggy welding rod --FIT in reply to Tye W, 01-01-2006 06:25:02  
After 30 yrs. of teaching welding, I would not suggest welding cast with 7018. Some high grades of cast will appear to be ok for awhile but will eventually crack away. 7018 is a low hydrogen rod. The suggestion of welding cast slowly is a good one. About an inch and then peen until cool. Other techniques such as back welding work also. This has nothing to do with the rod but rather the expansion of the cast iron.

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F-I-T

12-31-2005 17:14:07




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 Re: Muggy welding rod --FIT in reply to 430WLPG, 12-31-2005 16:59:56  
I have not tried that, but if you send them a note on their site, I'm sure they will get back to you with that info. From what I have used it for, I believe that it would stick steel to cast just fine.

Frank



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