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Home > Forums > Materials Engineers > Activities > Magnetic engineering Forum

High Temp and Magnets

Read More Threads Like This One

caravoy (Mechanical)

29 Mar 05 11:21

I've done a bit of research on the effect of temp on a material's magnetism, but I really need yes or no answer. Is is pointless to try to pick up an iron piece that is around 1600 deg F with a magnet. The curie temp is 1420 deg F so iron's ferromagnetism disappears, but paramagnetism remains. Can I exploit paramagnetism to achieve the same ends? Thanks.

EdStainless (Materials)

29 Mar 05 12:47

You could defect the path of iron particles, but you will not be able to pick them up. The para forces are less than the mass.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm

MagMike (Materials)

29 Mar 05 14:07

As EdStainless said, a paramagnetic material will not be attracted to a magnet in any measurable sense.

Just wanted to mention: If you had planned to use a permanent magnet to pick up the iron, the magnet would demagnetize when brought near-to or in-contact with the iron at that temperature. The Curie point of Alnico is 1580 degF.

EdStainless (Materials)

29 Mar 05 17:37

I presumed that the magnet would be cooled.

These effects are fun to play with. Some liquid gases have similar properties.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm

caravoy (Mechanical)

30 Mar 05 10:10

EdStainless, MagMike:
Thanks for your help.

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