After 13 years of Parametric 3D, my opinion...

I could find no *content* in your post to respond to other than giving
me cause to comment on your comments about SolidWorks in the airfoil
manufacturing business.

I don't believe Jarvis Airfoil will be moving to SolidWorks anytime
soon. :>)

jon

 

No seats of SolidWorks appear to installed at SouthWest Turbine,
either.

http://www.ugs.com/about_us/success/southwest_turbine.shtml

jon

 

Ahhhhhhh.... finally.


http://www.regencoservices.com/EngineeringExperience.htm

Website says they use CAMWorks. CAMWorks does not support 5 axis
simultanious milling like VX does.

http://www.teksoft.com/camworks/camworks_new.htm

Maybe they should be using VX. :>)

jon

 

Good, as you have clues about neither.

Is this about no clues again?

 

And SolidWorks.

You are still without clues, right?

Yep. No clues at all.

 

Cliff, for 6-axis and, gasp, * 7-axis* milling centres go to:

http://www.manufacturingcenter.com/tooling/archives/0803/0803edm.asp

We used Hastelloy, Inconel, Zirconium and Zirconium-Niobium for our
6-axis EDM station...how much more convincing do you need oh paranoid
one...

Either you are facinated by sparkly things, or you just like to argue
for the sake of arguing...don't bring your personal issues to this NG.

Read the facts and give it up.

WV

 

Ummm ..... that seems to be an ad for EDM machines ....

BTW, "hotter engines consume more of the fuel" is not necessarily
true. It might very well be entirely counterproductive.

I've worked with all of those materials, plus a lot more.

Used the materials "for" the "station"?
BTW, Which axes is the sixth one? Rotating
the electrode or the "toolchanger" or ..... ?

What about the 7 axes EDM machines?

EDM <> milling?
--
Cliff

Both are interesting at times.
Little is learned by copying posts & saying "Me too!"

What about EDM?

BTW, Most of those axes are positioning, right?

Interesting to note that EDM is still in use for such .... my
but those holes are deep .. must be heavy parts with thick
walls ....

 

You used Zirconium and Zirc-nio...really...

In what application?

I know what these are *usually* used for, I'm curious as to where you
have actually used these materials.

Now Googling Zirc-nio so you can cut and paste it here will make it
easy to detect the BS factor, or maybe BS is one of your favored
materials.

WV

 

GE Nuclear. Hafnium is used as well. And some
Nuclear grade Stainless alloys (as Cobalt free as they can make them).
http://www.gepower.com/businesses/ge_nuclear/en/index.htm

http://www.hoovers.com/ge-nuclear-energy/--ID__136262--/free-co-factsheet.xhtml
http://www.nuc.berkeley.edu/designs/abwr/abwr.html

You like mills, right?
Here are some Pilger Mill parts:
http://images.google.com/images?q="pilger+mill"&num=100&hl=en&lr=&ie=UTF-8&safe=off&sa=N&tab=wi

HTH

 

And Google?

And some techinical stuff:
http://journalsip.astm.org/JOURNALS/JAI/PAGES/189.htm

Dr. Harada is a nice guy <G>. Met him a bit before the Kobe
earthquake IIRC.

 

I think he used them.

jon

 

But you'd not know <g>.

Read up on the theory of Pilger Mill tooling. It's interesting .....
see those "hollow" round or cresent-shaped dies? They are used to
form the hollow material from one OD/ID to another over the
mandrels (also in one of the pics.).
The "semi-circular groove" in their OD has variable
"radius" as well as depth ..... one is used on each side
of the mandrel (a pair) and they sort of rock & roll over
the mandrel (back & forth) as the material/stock is slightly
advanced each cycle.
See pics of Pilger Mills.

The mathematical basis functions behind the curve
of the mandrel's form and the shapes of those grooves
are interesting.

BTW, How would you model/design or machine them <G>?

BTW-II: Hafnium is used more in military reactors then in
commercial ones, though some is used there as well. Hafnium
Carbide has the highest meltiog point of anything I'w aware of
...... certainly of any binary chemical (Hafnium + Carbon).
It might even be a solid on the surface of the Sun ... probably
make a boat hull ....

Stuff's expensive ... $$$ ...... Gold's probably a bit cheaper.

 

A perfect Periodic Table reply there Cliffy...I expected that you have
never used Zirconium or even Zirconium-Niobium.

Here is what I am *allowed* to tell you.

Zirconium...beautiful metal. Mix it with Niobium and you have what
looks/machines/welds like certain ferritic grades of stainless steel,
but it has a very low neutron absorption cross section.

What does that mumbo-jumbo mean?...it allows nuclear neutron flux to
flow through fuel and moderator better than stainless steel, thus
inproving neutron efficiency which boils down to more thermal neutrons
making more steam making more power via the turbine.

You answered my original question of how you, Cliff, have used Zirc-nio
as you claimed by talking aboutmandrels and the material Hafnium...I
have been in the nuclear design side of things for many years in two
different countries.

Remember The Manhattan Project?...for my latest venture:
www.waste2glass.com

Please stop butchering the periodic table...admit you have never used
Zirc-nio to yourself and drop the subject.

WV

 

Reactor Bolshoi Moschnosti Kanalynyi

John

 

RBMK graphite(flamable) moderated, hex fuel bundle matrix, no pressure
capable containment building, shut-down/control rods on slow flawed
system, real flaky flux patterns, safety systems easy to
override=Chernobyl

I know the system well, it is part of every workers training.

WV

 

It's used in plasma torch tips as well. We've done some interesting stuff
with machining the copper tip then inserting the hafnium then finish
machining all in one op on the machine.

 

I always thought that scrap fuel rods would make a nice thing

Ever see a Zirconium fire?

0.182 barns

1.15 barns

So?
You don't want to lose the energy IN or INSIDE the fuel rods. That
would make them rather hot, right?
You want it released in the moderator ... usually water these
days in most reactors .... though a few may use liquid Sodium ....

Well, you sort of need to slow a few things down to get thermal
neutrons, IIRC, Too fast or too slow and ......

Side subject.
Hafnium is found & produced mostly from Zirconium ores IIRC.
Something like less than ~1% Hafnium to ~99% Zirconium.

With which firm(s)?
BTW, GE Nucear's main engineering group moved from
San Jose, CA to Wilmington, NC fairly recently.

The OD of a BWR Zirconium/Zircalloy fuel rod is ~ .487", the
ID ~ .415" & the wall ~ .037" from a quick measurememt ......

Tell us about PWRs & BWRs .....

 

Hafnium or Hafnium Carbide?
Does it need to be electrically conductive? I don't know if
the Carbide is.
Hafnium can be pyrophoric. Machine it slowly ......and keep
all fines well clear ... don't use water or CO2 if it gets
started ... but you probably have small bits ...

 

My very limited understanding of the reason for using Hafnium is that
Hafnium gives up electrons freely. Which would be a desirable trait in a
plasma torch. I wonder why they don't use it in spark plugs. I would think
it would be better than Platinum. Does Carbon have an affinity for Hafnium?

Wire really. I don't remember the diameter but it was small. Maybe around
..030"

 

I've made end caps for those. I might have a couple kicking around
somewhere.
Side note: I heard that Combustion Engineering (now owned by ABB) is moving
out of Ct. I also hear that a new nuke plant has investors and is in the
design stage. I imagine it's a half lifetime away from being built. Pardon
the pun.