core materils question

[dan]

I have lots of wonderfull data on all types of ferrite and power iron
cores...
What I'm wondering is if someone can point me to similar data for
"regular" iron core materials... I suspect their are several types. I
have looked around for a while and not found anything.
laminated transformer cores, motor armatures....

dan

 

[R.Legg]

I have lots of wonderfull data on all types of ferrite and power iron
cores...
What I'm wondering is if someone can point me to similar data for
"regular" iron core materials... I suspect their are several types. I
have looked around for a while and not found anything.
laminated transformer cores, motor armatures....

dan

http://thomas-skinner.com/

 

[Charles Schuler]

I have lots of wonderfull data on all types of ferrite and power iron
cores...
What I'm wondering is if someone can point me to similar data for
"regular" iron core materials... I suspect their are several types. I
have looked around for a while and not found anything.
laminated transformer cores, motor armatures....

Some info at http://www.tempel.com

 

[dan williams]

Some info at http://www.tempel.com

the best I can get from both sites is that iron saturation is around
23000 to 21000 gauss, I picked up 5000 as the permeability of iron from
a physics book.....

I ocassionally rewind motors...

dan

--
Dan Williams, Owner
Electronic Device Services
(604) 741 8431
RR8 855 Oshea rd
Gibsons BC Canada
V0N 1V8

 

[Big John]

Hi Dan,

For info try Arnold engineering http://www.arnoldmagnetics.com/ . Once
upon a time I worked for a company that made electric motors and the BH
curves came from this company.

I'll give you a little info in case you don't know it already. Motor
laminations are made of electric sheet steel. Usually it's an iron-silicon
alloy. It has an M number which relates to it's core loss. The lower the M
number the better the steel - lower core loss. Motors might use steel with
numbers like M-45, M-36, M-22, or M-19. Motor steel is usually
non-oriented. Transformers often use grain oriented steel (better
permanence in one direction). You might see transformer numbers like M-6
and M-4. The laminations also have coatings to electrically insulate one
lamination from another. Some of the better ones can take the high
temperatures used to strip the windings. There are also special materials
for certain applications that have much higher permeability then standard
electrical sheet steel.

I recommend that you get the BH curves from some of the materials that you
may be working with because one set of numbers doesn't necessarily fit every
material.

Hope this helps,
Big John