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Science Forum Index » Engineering - Joining (Welding) Forum » Welding Ductile Pipe?
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| mlcorson |
 Posted: Wed Feb 14, 2007 12:32 pm |
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Hello all:
I'm an amateur sculptor and weld only as a function of sticking things
together. Recently a friend of mine dropped off a bunch of large 12"
rings of ductile iron/steel water pipe. The pipe has a concrete lining
that I will remove using a ball peen hammer. I'd like to weld these
pieces to form an abstract sculpture. What kind of arc rod should I
use? Polarity? I have stick, Tig, AC/DC. The parts are under very
little structural stress other than to hold them together. TIA
-Mike in St. Louis |
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| Gunner |
| Posted: Wed Feb 14, 2007 2:15 pm |
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On 14 Feb 2007 08:32:08 -0800, "mlcorson" <mlcorson@njc-ids.com> wrote:
Quote: Hello all:
I'm an amateur sculptor and weld only as a function of sticking things
together. Recently a friend of mine dropped off a bunch of large 12"
rings of ductile iron/steel water pipe. The pipe has a concrete lining
that I will remove using a ball peen hammer. I'd like to weld these
pieces to form an abstract sculpture. What kind of arc rod should I
use? Polarity? I have stick, Tig, AC/DC. The parts are under very
little structural stress other than to hold them together. TIA
-Mike in St. Louis
6011 or 6013, depending on how deep and how pretty you want the welds.
Good luck on beating out the concrete. Use a 3 lbs shop hammer
Gunner
Political Correctness
A doctrine fostered by a delusional, illogical liberal minority and
rabidly promoted by an unscrupulous mainstream media,
which holds forth the proposition that it is entirely possible
to pick up a turd by the clean end. |
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| Vernon |
| Posted: Wed Feb 14, 2007 8:18 pm |
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Guest
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On Feb 14, 10:32 am, "mlcorson" <mlcor...@njc-ids.com> wrote:
Quote: Hello all:
I'm an amateur sculptor and weld only as a function of sticking things
together.
Hi Mike,
If there's a possibility of a weld failure harming somebody or
something you might be prudent to reach a determination of the
approximate metallurgical properties of the material. There is an old
time way to do this that blacksmiths used. It's called the "spark
test". Essentially, you get some pieces of known composition. You
then put a grinder against a piece of your material, duly noting the
spark pattern.
Then you spark your comparison pieces until you find a close match in
the sparks they throw off.
My understanding is that "ductile iron" is not easily welded. But I'm
not one of the illuminati here. The purpose of this post is to draw
them out from their lairs.
Vernon |
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