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Tool Talk Discussion Forum

Re: Nickel MIG Wire for Cast Iron?

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shawnspeed3

07-06-2013 07:07:17
70.199.97.182



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Machine the square/round out of plain steel & braze it in place...this will create the least amount of stress in the part...2nd would be to gas weld the material on (cast iron rod & flux) with proper pre-heat & post weld cool down(think low & slow)....Shawn




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S.D.L.

07-06-2013 11:24:47
72.173.192.59



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 Re: Nickel MIG Wire for Cast Iron? in reply to shawnspeed3, 07-06-2013 07:07:17  
Thanks Shawn, as well as everyone else. I will probably go with your 2nd option. Thanks!



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S.D.L.

07-06-2013 17:11:00
70.41.96.39



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 Re: Nickel MIG Wire for Cast Iron? in reply to S.D.L., 07-06-2013 11:24:47  
I meant to ask, but forgot. Where do you all get your cast iron rod and which flux do you use for best results? Thanks!



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shawnspeed3

07-07-2013 07:44:44
70.199.98.231



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 Re: Nickel MIG Wire for Cast Iron? in reply to S.D.L., 07-06-2013 17:11:00  
I save old cast iron rings for small jobs, or order the rod thru the local welding supply.here is another source...http://www.tinmantech.com/html/cast_iron_welding_supplies.php



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george md

07-06-2013 21:27:36
209.213.167.201



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 Re: Nickel MIG Wire for Cast Iron? in reply to S.D.L., 07-06-2013 17:11:00  

SDL,

I get the cast iron rod from Tucker Valve

Seat co in texas. The best flux is from Superior

flux in cleveland oh.

Break a piece out of an old bath tub to make

the repair piece , very good cast iron. Do heat

the whole manifold to at least 1000 deg before

you weld, and heat 1500 and hold for 15 minutes

and very slow cool from 1500 to 1200 ( 30

minutes) then slow cool on down . The rate from

1500 to 1200 will make the cast very machinable,

if it chills in that temp range ,it will be

very hard and even carbide tooling doesn't

like it . high speed tooling won't touch it.

Below is a before and during repair of a

wauk manifold. Also a link to more of that

repair.

george

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jon f mn

07-07-2013 03:21:44
70.197.205.249



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 Re: Nickel MIG Wire for Cast Iron? in reply to george md, 07-06-2013 21:27:36  
WOW, that is amazing work!!! I've done a few manifolds as well, but nothing that bad. Very impressive.



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george md

07-07-2013 10:51:01
209.213.167.201



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 Re: Nickel MIG Wire for Cast Iron? in reply to jon f mn, 07-07-2013 03:21:44  
Jon,

Next time you are in this end of the country stop in ,can show you many more disasters.

Many of the jobs come in with some flavor of arc weld and failed, have to remove all that garbage and do it with rod and flux.

http://imageevent.com/gmachine/manifoldandcastironrepair/twincitymanifoldrepair

The twin city was local when I fixed it ,was sold at auction , went Mn.

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jon f mn

07-07-2013 12:28:11
75.168.224.96



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 Re: Nickel MIG Wire for Cast Iron? in reply to george md, 07-07-2013 10:51:01  
LOL, Everyone has disasters. I could show you a few of those as well. I would imagine MD is Maryland? Where?



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george md

07-07-2013 14:36:54
209.213.167.201



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 Re: Nickel MIG Wire for Cast Iron? in reply to jon f mn, 07-07-2013 12:28:11  
Jon,

18 miles north of where you were in aberdeen

60 miles south of where you were in harrisburg.

george



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mj

07-06-2013 10:50:56
216.237.70.109



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 Re: Nickel MIG Wire for Cast Iron? in reply to shawnspeed3, 07-06-2013 07:07:17  
What he said as the '2nd method' - peen the area around the welds after welding/brazing (stress relief) and then cover the part in a box of sand to cool out. For the 2nd method I'd use brass if the manifold doesn't get too hot or use a torch and cast rod & flux as others said.
This post was edited by mj at 10:58:54 07/06/13.



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