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welding cast iron to steel
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Mike-in-NC
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Joined: 06 Oct 2009
Posts: 54
Location: Fayetteville, North Carolina

PostPosted: Sat Oct 24 09 5:08 am    Post subject: welding cast iron to steel Reply with quote

A question for the great welders here. Smile
Can someone explain how cast iron and steel interact in regards to welding? I was recently told that welding cast iron to steel is a "Complete NO-GO".

Is this true? Is it a myth...??

Are there any tricks to getting steel and cast iron to play well together?

Thanks in advance for your responses.
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day_trippr
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Joined: 08 May 2009
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Location: Stow, MA

PostPosted: Sat Oct 24 09 6:04 am    Post subject: Reply with quote

I am the complete non-welder, but I can Google a string as well as anyone with a pulse Very Happy

http://www.buzzle.com/articles/welding-cast-iron-to-steel.html

So it can be done.

If you Google "welding cast iron to steel" you'll get plenty of good hits...

Cheers

/greyhackles
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k.a.m.
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PostPosted: Sat Oct 24 09 6:14 am    Post subject: Reply with quote

Mike-in-NC, most welding on cast involves repairs not joining two materials together. Some cast irons can be welded some are tough to impossible. They require Nickel rods or Ni-cads. I personally do not recommend trying to join carbon steel to cast, I believe it will only be a matter of time before the weld pops from the cast piece. I have had luck in some repairs and some were a total waste of time.
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Teleking
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PostPosted: Sat Oct 24 09 7:03 am    Post subject: Reply with quote

k.a.m. wrote:
I have had luck in some repairs and some were a total waste of time.


And you said you could weld cast (Implying all cast iron). Looks like those doors are mine…mmmuuuuuhhhhaaaaaa

Very Happy Shocked Very Happy Very Happy Very Happy Wink
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k.a.m.
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PostPosted: Sat Oct 24 09 7:11 am    Post subject: Reply with quote

Teleking wrote:
k.a.m. wrote:
I have had luck in some repairs and some were a total waste of time.


And you said you could weld cast (Implying all cast iron). Looks like those doors are mine…mmmuuuuuhhhhaaaaaa

Very Happy Shocked Very Happy Very Happy Very Happy Wink


Touch'e my Friend Touch'e Laughing But at least give me a chance to see if they are weldable Very Happy Laughing
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Teleking
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PostPosted: Sat Oct 24 09 7:14 am    Post subject: Reply with quote

k.a.m. wrote:
Touch'e my Friend Touch'e Laughing But at least give me a chance to see if they are weldable Very Happy Laughing


Very Happy Very Happy Very Happy Very Happy Wink
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Capt Chrysler
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PostPosted: Sat Oct 24 09 8:36 am    Post subject: Reply with quote

Exclamation Exclamation Exclamation MY DOORS Exclamation Exclamation Exclamation

Capt. Chrysler
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Mike-in-NC
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Joined: 06 Oct 2009
Posts: 54
Location: Fayetteville, North Carolina

PostPosted: Sat Oct 24 09 8:55 am    Post subject: Reply with quote

Thanks for valuable responses on this. Using google simply reminded me why I didn't score high grades in chemistry.. Very Happy Very Happy

I knew I could get a clear, informed answer right here at the Ring.

(quick update on the smoker) I've changed my design from an offset cross flow (w/tuning plates) to reverse flow. I'm having the welding done during the next few days.

Thank you all again! Smile
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k.a.m.
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PostPosted: Sat Oct 24 09 9:24 am    Post subject: Reply with quote

Capt Chrysler wrote:
Exclamation Exclamation Exclamation MY DOORS Exclamation Exclamation Exclamation

Capt. Chrysler


Yeh Yeh Yeh we know, Have you had your other set made so you can ship the origionals to Texas? Laughing
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Teleking
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PostPosted: Sat Oct 24 09 9:43 am    Post subject: Reply with quote

Capt Chrysler wrote:
Exclamation Exclamation Exclamation MY DOORS Exclamation Exclamation Exclamation

Capt. Chrysler


Sorry KAM I think I got one up going to MAINE. Can't weld ALL cast....

Very Happy Very Happy Very Happy Very Happy Wink
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k.a.m.
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PostPosted: Sat Oct 24 09 9:50 am    Post subject: Reply with quote

Teleking wrote:
Capt Chrysler wrote:
Exclamation Exclamation Exclamation MY DOORS Exclamation Exclamation Exclamation

Capt. Chrysler


Sorry KAM I think I got one up going to MAINE. Can't weld ALL cast....

Very Happy Very Happy Very Happy Very Happy Wink


Ha, Okay you win Maine they go. Laughing NOTTTTTTTTTTT Laughing Laughing Laughing Laughing Laughing
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Teleking
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PostPosted: Sat Oct 24 09 9:52 am    Post subject: Reply with quote

k.a.m. wrote:
Ha, Okay you win Maine they go. Laughing NOTTTTTTTTTTT Laughing Laughing Laughing Laughing Laughing


bbbooooo sore loser Wink
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k.a.m.
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PostPosted: Sat Oct 24 09 10:10 am    Post subject: Reply with quote

Teleking wrote:
k.a.m. wrote:
Ha, Okay you win Maine they go. Laughing NOTTTTTTTTTTT Laughing Laughing Laughing Laughing Laughing


bbbooooo sore loser Wink


Okay we can do paper, rock, scissors. Very Happy
I choose Scissors Laughing
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erniesshop
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PostPosted: Sat Oct 24 09 10:15 am    Post subject: Reply with quote

From What Iv'e Seen of K.A.M's Work................
He Can Weld Anything From The Crack Of Dawn..................
To The Break Of Day !!!!!!!!!!!!!!!
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mtnside
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Joined: 30 Sep 2009
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PostPosted: Sat Oct 24 09 11:19 am    Post subject: Reply with quote

Cast is weldable,but not advisable.Cast rod ,nirod ,stainless,nickel,heating,brazing, its a lottery. Question
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seattlepitboss
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PostPosted: Sat Oct 24 09 11:00 pm    Post subject: Reply with quote

If I need to join cast iron to steel, I braze it. Gets around the problem nicely.

seattlepitboss
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chickenman972
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Joined: 10 Jan 2009
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Location: Williamstown Wv

PostPosted: Sun Oct 25 09 5:31 am    Post subject: Reply with quote

erniesshop wrote:
From What Iv'e Seen of K.A.M's Work................
He Can Weld Anything From The Crack Of Dawn..................
To The Break Of Day !!!!!!!!!!!!!!!


What about a "Broken Heart"?? Wink

I was part of reconstructing the cason of an old Civil War cannon that was all cast iron when I was in welding school, MANY years ago. We tried everything from nickel rods to lo-hydrogen. The only way we had any sucess was brazing. We had two guys with rosebuds and one guy brazing, the rosebuds kept the pieces and the welding tables hot. When we finished brazing a piece, we had a sand box that was heated with one of the rose buds and we buried the pieces in the sand and heated some more. We let it cool slowly, some times taking days, and semmed to hold up very well.
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k.a.m.
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PostPosted: Sun Oct 25 09 7:39 pm    Post subject: Reply with quote

chickenman972 wrote:
erniesshop wrote:
From What Iv'e Seen of K.A.M's Work................
He Can Weld Anything From The Crack Of Dawn..................
To The Break Of Day !!!!!!!!!!!!!!!


What about a "Broken Heart"?? Wink

I was part of reconstructing the cason of an old Civil War cannon that was all cast iron when I was in welding school, MANY years ago. We tried everything from nickel rods to lo-hydrogen. The only way we had any sucess was brazing. We had two guys with rosebuds and one guy brazing, the rosebuds kept the pieces and the welding tables hot. When we finished brazing a piece, we had a sand box that was heated with one of the rose buds and we buried the pieces in the sand and heated some more. We let it cool slowly, some times taking days, and semmed to hold up very well.


I have mended a few Very Happy
chickenman972, I would have loved to have been a part of that project. it sounds like it was very educational, I have sand boxed a few pieces before but nothing real big. Brazing is a nice way to attach cast to carbon steel, just not very strong, in the structural sense. I remember my first header I brazed, I got nearly to the end peening as I was going and then the ugly sound of pop gave me a reality check. Smile
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chickenman972
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PostPosted: Sun Oct 25 09 10:41 pm    Post subject: Reply with quote

It was a very good learning experience, and an all around fantastic project. Th e brazing wasn't as strong as we would have liked , but doing it that way and slow cooling was the only way we could get it to hold together.
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jrbbq



Joined: 01 Dec 2008
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Location: Oregon

PostPosted: Wed Oct 28 09 2:14 pm    Post subject: Reply with quote

UTP 85 FN , is the rod you should use to weld cast iron, you also need to preheat your metals
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