Viscosity of Liquid Metal

This should get you started...

http://en.wikipedia.org/wiki/Viscosity

Thanks a lot,

but I do know the theory of viscosity and how to determine it. The problem lies in the handling of the liquid metal to measure fluidity etc. Not so easy to hold the container and measure time to fill , especially if the metal is at 1600°C. I got the viscosity of Liquid Iron on the web and sent that to the "client" to use as an assumption. Is 1.5 P.s btw.

T

Glad to be of a little help. You just need to get tougher containers and enlist the help of a robot built for heat.

I once programmed a robot whose sole duty was to hold differentials in a furnace until hot enough, then quench them, and then drop them in a pile of differentials. It can be done.

You are right, it can be done. But for the purpose of the question I am not going to design and program a robot to do that. I actually told him initially to use the same value as water (1 P.s), but looked on the web anyways.

The data is used to do a FEA on a furnace shell containing this material. So for those calculation any assumption is good enough.

You seem to be in the metallurgical field too (Nickel Grades Thread), where and what?

T

No. I'm just a nosey bastard that likes to fiddle.

Yes if it was just a question, what responsibility do you have to recreate Dante's Inferno!!!

Years ago, there was this great article in Motorcycle Magazine where they tested all the shock oils side-by-side to see which was the best. Pep-Boy's Pure As Gold came in last just ahead of Coors beer. I'm not kidding! It was hilarious!

Just goes to show how good beer is for everything .....

You can substitute anything with beer and it will work as good if not better. Have anyone tried using it as an alternative fuel (for cars that is )

Vermin, that's just an emphasis to let you know it's OK to drink Coors, but stay away from Pep Boy's Pure-as-gold!! That stuff will bind you up!!

I'm after hard numbers or ideally

log(η, Pa·s) = A +B / (T in °C - T_o) for iron with values of T_o, A & B.

With that I can cram and jam out an Re and from that a Moody Friction factor (and that WILL be ugly).

Thanks for the hard number of 1.5 Pa S. I feel the need for multiple sorces on all of this work - it is the second time around on this, and I want a really good simulation.

Yours

Volcano Master

http://www.iop.org/EJ/abstract/0959-5309/45/4/305

This is a link to a paper discussing specifically measurement on the fly of molten metal viscosity. Might be of help.

There are test methods for measuring the viscosity of various materials. I measured the viscosity of glass (molten range) for many years. Some resources that you may want to explore are ASTM methods, Allegheny Technologies (Manufacturer of Speciality Steel / Research & Development), Handbook of Chemistry & Physics. With regards to glass, the physical properties can be calculated from the composition analysis. This may also be true for metals.

The viscosity of Iron is a function of both the temperature (Duhh!) and Carbon content. I do not have data for High Carbon Ferromanganese, but will scan and email to you the graphs that I have for iron (2), cobalt, nickel and copper.

I'm sure iron will be a suitable approximation proxy for your high Carbon Ferromanganese.

I am presuming that you are aware that fluidity, which most people confuse for visosity, is actually its reciprocal.

However, your interrogators may not be so well informed.

Also, presume that your guys are using for FEA consideration is ferrostatic pressure.,

Give me a few minutes to get this scanned.

BTW, if you have the skills and resources, try to get Cavalier's paper in Proc. Nat. Phys. Lab., No.9, June 1958, vol2, 4D; also Barfield and Kitchener in J.Iron and Steel Inst. 1955, vol 180, pp 324-329.

milo " we threw the ferromanganese into the molten steel by wheelbarrow loads and it were solid then"

From the dictionary:

Physics: a measure of the resistance of a substance to motion under an applied force

Talk to the Quality Control Department about testing.

You did make the Power Puff Girls, didn't you!!!

You're outed, Professor Neutonem!!!

NIII-cccce!

I believe you meant ''Utonium"

Aww. The Powerpuff Girls. Blossom, Bubbles and Buttercup.

What..? I have kids.

While the thing is quite is easy for pure metals (the Andrade model is more than 100 years old), this is a problem which is not solved for alloys of any kind. It might be of help a book ( by Iida and Guthrie) or journal paper ( by Battezzati and Greer). But you actually will not have an answer