Diecast metal can be a variety of things, including aluminum, magnesium, or
brass. Zinc alloys are the most common.
There are simple reagent tests and test kits available to distinguish the
two. But in most cases you should be able to tell by the part's density. The
density of zinc is almost the same as that of iron or steel -- three times
as great as aluminum.
Here's a good story:
A couple of months ago a guy showed up with a
handlebar bracket for an
antique chain saw that was cracked through the bar
hole. It felt light as a
feather. Can I weld it? Sure, it's magnesium. Oh?
Your competition says
it is cheap assed die-cast and can't be welded!
Well, I'm sure it is mg.
and yes I'lll fix it. If this were die-cast it
would fell heavy to me and its light.
Got it cleaned up and prepped for weld and jigged
up nice. Now, how will
it act? It was by far, and I mean easy, the
easiest thing I've ever welded!
Easy full penny with no problem. Had to watch the
temp or it would catch
fire so I let it cool often. If you try this,
watch for the base metal 'slumping'
and stop immediately! This was a true quicky of a
job and was so much
fun I didn't even charge him. Gave him the mg dust
in a folded paper
and told him to give it to my competition at the
local bar there, where they
smoke. ;>)} phil k.
That's interesting. I've never welded magnesium, but I've read that it's
very easy -- if you're careful and know what you're doing.
The Brits used a lot of it in their racecars (and their mag-based Elektron
alloy), years ago when the building operations typically were a few guys
working in a dank garage. They welded a lot of it.
We use a lot of diecast aluminum and magnesium. Just looking at the raw
look pretty much the same. When you pick one up you notice the difference. We
the aluminum, we farm out the magnesium machining for safety reasons.
I wish we did work with zinc alloys like zamak, that can be cast at low
that of lead.
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller
Do you do your own diecasting, or is that jobbed out?
One of my first field trips at _AM_ was to a diecaster. One of the other
editors told me I'd think I just gotten a look at the inside of hell. He was
On Sun, 29 May 2011 20:38:13 -0400, "Existential Angst"
and a bunch more on google
-- Unka George (George McDuffee)
The past is a foreign country;
they do things differently there.
L. P. Hartley (1895-1972), British author.
The Go-Between, Prologue (1953).
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